com presentations: PHP 7.4 talk for php[world]: php-phpworld19.xml slides/internals/bishop-bettini.png slides/internals/bisshop-bettini.mp3 slides/internals/joe-watkins.jpg slides/internals/joe-watkins.mp3 slides/internals/matteo-becatti.mp3 slides/internals/matteo-becatti.png slides/internals/nikita-popov-first.mp3 slides/internals/nikita-popov.jpg slides/internals/nikita-popov.mp3 slides/internals/php74- __tostring-exceptions.xml slides/internal

diff --git a/php-phpworld19.xml b/php-phpworld19.xml
new file mode 100644
index 00000000..74987d8d
--- /dev/null
+++ b/php-phpworld19.xml
@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="utf-8"?>
+<presentation css="derick.css">
+<topic>Debugging</topic>
+<title>The La(te)st PHP 7 — What's&#160;new&#160;in&#160;PHP&#160;7.4</title>
+<event>php[world]</event>
+<location>Washington DC, USA</location>
+<date>October 24th, 2019</date>
+<speaker>Derick Rethans</speaker>
+<email>[email protected]</email>
+<twitter>derickr</twitter>
+<url>https://derickrethans.nl/talks/php-phpworld19</url>
+<joindin>https://joind.in/26855</joindin>
+<slide>slides/xdebug/title.xml</slide>
+<slide>slides/mongodb/me.xml</slide>
+
+<slide>slides/internals/php74-typed-properties.xml</slide>
+<slide>slides/internals/php74-typed-properties-read.xml</slide>
+<slide>slides/internals/php74-typed-properties-write.xml</slide>
+<slide>slides/internals/php74-typed-properties-write-coersive.xml</slide>
+<slide>slides/internals/php74-typed-properties-write-strict.xml</slide>
+<slide>slides/internals/php74-variance-return-ok.xml</slide>
+<slide>slides/internals/php74-variance-return-wrong.xml</slide>
+<slide>slides/internals/php74-variance-argument-ok.xml</slide>
+<slide>slides/internals/php74-variance-argument-wrong.xml</slide>
+<slide>slides/internals/php74-variance-properties-ok.xml</slide>
+<slide>slides/internals/php74-variance-properties-wrong.xml</slide>
+
+<slide>slides/internals/php74-null-coalesce-assignment.xml</slide>
+<slide>slides/internals/php74-spread-operator.xml</slide>
+<slide>slides/internals/php74-invalid-container-read.xml</slide>
+
+<slide>slides/internals/php74-ffi.xml</slide>
+<slide>slides/internals/php74-ffi-example.xml</slide>
+<slide>slides/internals/php74-preloading.xml</slide>
+<slide>slides/internals/php74-preloading-setup.xml</slide>
+<slide>slides/internals/php74-preloading-zf.xml</slide>
+<slide>slides/internals/php74-preloading-with-ffi.xml</slide>
+
+<slide>slides/internals/php74-reference-reflection.xml</slide>
+<slide>slides/internals/php74-custom-serialization.xml</slide>
+<slide>slides/internals/php74-custom-serialization-inheritence.xml</slide>
+
+<slide>slides/internals/php74-always-hash.xml</slide>
+<slide>slides/internals/php74-unbundle.xml</slide>
+
+<slide>slides/xdebug/phpinternalsnews.xml</slide>
+<slide>slides/internals/phpinternalsnews-me.xml</slide>
+
+<slide>slides/internals/php74-saner-string-number-comparisons.xml</slide>
+<slide>slides/internals/php74-weakref.xml</slide>
+<slide>slides/internals/php74-short-arrow-functions.xml</slide>
+<slide>slides/internals/php74-short-arrow-functions-example.xml</slide>
+<slide>slides/internals/php74-lsp-operator-precedence-lsp.xml</slide>
+<slide>slides/internals/php74-operator-precedence-ternary.xml</slide>
+<slide>slides/internals/php74-concat-operator-precedence.xml</slide>
+<slide>slides/internals/php74-hash-argon.xml</slide>
+<slide>slides/internals/php74-__tostring-exceptions.xml</slide>
+<slide>slides/internals/php74-base-convert.xml</slide>
+<slide>slides/internals/php74-numeric-literal-separator.xml</slide>
+<slide>slides/internals/php74-deprecate-curly-brace.xml</slide>
+<slide>slides/internals/php74-postgresql-escape.xml</slide>
+<!-- <slide>slides/internals/php74-arginfo.xml</slide> -->
+<slide>slides/internals/php74-deprecations.xml</slide>
+<slide>slides/internals/php74-timeline.xml</slide>
+
+<slide>slides/internals/questions-new.xml</slide>
+<slide>slides/xdebug/resources.xml</slide>
+
+</presentation>
diff --git a/slides/internals/bishop-bettini.png b/slides/internals/bishop-bettini.png
new file mode 100644
index 00000000..445775ff
Binary files /dev/null and b/slides/internals/bishop-bettini.png differ
diff --git a/slides/internals/bisshop-bettini.mp3 b/slides/internals/bisshop-bettini.mp3
new file mode 100644
index 00000000..2cb89886
Binary files /dev/null and b/slides/internals/bisshop-bettini.mp3 differ
diff --git a/slides/internals/joe-watkins.jpg b/slides/internals/joe-watkins.jpg
new file mode 100644
index 00000000..862f63b8
Binary files /dev/null and b/slides/internals/joe-watkins.jpg differ
diff --git a/slides/internals/joe-watkins.mp3 b/slides/internals/joe-watkins.mp3
new file mode 100644
index 00000000..f2ff3234
Binary files /dev/null and b/slides/internals/joe-watkins.mp3 differ
diff --git a/slides/internals/matteo-becatti.mp3 b/slides/internals/matteo-becatti.mp3
new file mode 100644
index 00000000..6dc9e3e5
Binary files /dev/null and b/slides/internals/matteo-becatti.mp3 differ
diff --git a/slides/internals/matteo-becatti.png b/slides/internals/matteo-becatti.png
new file mode 100644
index 00000000..93dbf7ff
Binary files /dev/null and b/slides/internals/matteo-becatti.png differ
diff --git a/slides/internals/nikita-popov-first.mp3 b/slides/internals/nikita-popov-first.mp3
new file mode 100644
index 00000000..33f31ccd
Binary files /dev/null and b/slides/internals/nikita-popov-first.mp3 differ
diff --git a/slides/internals/nikita-popov.jpg b/slides/internals/nikita-popov.jpg
new file mode 100644
index 00000000..ced66067
Binary files /dev/null and b/slides/internals/nikita-popov.jpg differ
diff --git a/slides/internals/nikita-popov.mp3 b/slides/internals/nikita-popov.mp3
new file mode 100644
index 00000000..843d1996
Binary files /dev/null and b/slides/internals/nikita-popov.mp3 differ
diff --git a/slides/internals/php74-__tostring-exceptions.xml b/slides/internals/php74-__tostring-exceptions.xml
new file mode 100644
index 00000000..ea6a8a99
--- /dev/null
+++ b/slides/internals/php74-__tostring-exceptions.xml
@@ -0,0 +1,42 @@
+<slide>
+<title>Episode #14: __toString Exceptions</title>
+
+<image filename="nikita-popov.jpg" align="left" attr="Nikita Popov"/>
+
+Episode 14 — __toString Exceptions — Nikita Popov
+
+<example result="1">
+&lt;?php
+class 💥
+{
+	function __toString()
+	{
+		throw new Exception();
+	}
+}
+
+$💣  = new 💥;
+echo $💣;
+?>
+</example>
+<break lines="3"/>
+
+<div effect="fade-out">
+<blurb>PHP 7.3:</blurb>
+<example class="error">
+Fatal error: Method 💥::__toString() must not throw an exception, caught Exception
+</example>
+</div>
+
+<div effect="fade-in">
+<blurb>PHP 7.4:</blurb>
+<example class="error">
+Fatal error: Uncaught Exception
+</example>
+</div>
+
+<break lines="2"/>
+<blurb align="right">https://wiki.php.net/rfc/tostring_exceptions</blurb> — https://github.com/php/php-src/pull/3887/files
+
+</slide>
+
diff --git a/slides/internals/php74-always-hash.xml b/slides/internals/php74-always-hash.xml
new file mode 100644
index 00000000..f0f04168
--- /dev/null
+++ b/slides/internals/php74-always-hash.xml
@@ -0,0 +1,33 @@
+<slide>
+<title>Always available hash extension</title>
+
+Always available hash extension — Kalle Sommer Nielsen
+https://wiki.php.net/rfc/permanent_hash_ext
+
+<blurb>PHP 7.3:</blurb>
+<blurb>
+&lt;pre>&lt;span style="background-color:#4E4E4E">&lt;font color="#FFFF55"> ⮯ &lt;/font>&lt;/span>&lt;span style="background-color:#4E4E4E">PHP-7.3 &lt;/span>&lt;span style="background-color:#303030"> 𝑷 &lt;/span>&lt;span style="background-color:#303030">&lt;font color="#FFFFFF">&lt;b>7.3.6-dev&lt;/b>&lt;/font>&lt;/span>&lt;span style="background-color:#303030"> &lt;/span>&lt;span style="background-color:#303030">&lt;font color="#AA0000">ＡＵ &lt;/font>&lt;/span>&lt;span style="background-color:#303030">&lt;font color="#55FF55">&lt;b>ＤＮ&lt;/b>&lt;/font>&lt;/span>&lt;span style="background-color:#303030">&lt;font color="#55FFFF">&lt;b>⁶⁴&lt;/b>&lt;/font>&lt;/span>&lt;span style="background-color:#262626"> 𝑿 &lt;/span>&lt;span style="background-color:#262626">&lt;font color="#FFFFFF">&lt;b>3.0.0-dev&lt;/b>&lt;/font>&lt;/span>&lt;span style="background-color:#303030"> &lt;/span>&lt;span style="background-color:#1C1C1C">                                &lt;/span>
+&lt;span style="background-color:#4E4E4E">&lt;font color="#55FF55">&lt;b>derick@singlemalt&lt;/b>&lt;/font>:&lt;font color="#5555FF">&lt;b>~/dev/php/php-src.git&lt;/b>&lt;/font>$ ./configure --help | grep hash         
+  --with-mhash=DIR        Include mhash support                                 
+  --disable-hash          Disable hash support                                  
+&lt;/span>&lt;/pre>
+</blurb>
+
+<break/>
+
+<div effect="fade-in">
+<blurb>PHP 7.4:</blurb>
+<blurb>
+&lt;pre>&lt;span style="background-color:#4E4E4E">&lt;font color="#FFFF55"> ⮯ &lt;/font>&lt;/span>&lt;span style="background-color:#4E4E4E">PHP-7.3 &lt;/span>&lt;span style="background-color:#303030"> 𝑷 &lt;/span>&lt;span style="background-color:#303030">&lt;font color="#FFFFFF">&lt;b>7.4.0-dev&lt;/b>&lt;/font>&lt;/span>&lt;span style="background-color:#303030"> &lt;/span>&lt;span style="background-color:#303030">&lt;font color="#AA0000">ＡＵ &lt;/font>&lt;/span>&lt;span style="background-color:#303030">&lt;font color="#55FF55">&lt;b>ＤＮ&lt;/b>&lt;/font>&lt;/span>&lt;span style="background-color:#303030">&lt;font color="#55FFFF">&lt;b>⁶⁴&lt;/b>&lt;/font>&lt;/span>&lt;span style="background-color:#262626"> 𝑿 &lt;/span>&lt;span style="background-color:#262626">&lt;font color="#FFFFFF">&lt;b>3.0.0-dev&lt;/b>&lt;/font>&lt;/span>&lt;span style="background-color:#303030"> &lt;/span>&lt;span style="background-color:#1C1C1C">                                &lt;/span>
+&lt;span style="background-color:#4E4E4E">&lt;font color="#55FF55">&lt;b>derick@singlemalt&lt;/b>&lt;/font>:&lt;font color="#5555FF">&lt;b>~/dev/php/php-src.git&lt;/b>&lt;/font>$ ./configure --help | grep hash         
+  --with-mhash=DIR        Include mhash support                                 
+&lt;/span>&lt;/pre>
+</blurb>
+</div>
+
+<div effect="fade-in">
+<blurb class="centre">~yes, I know this one is boring~</blurb>
+</div>
+
+</slide>
+
diff --git a/slides/internals/php74-arginfo.xml b/slides/internals/php74-arginfo.xml
new file mode 100644
index 00000000..2cb9ce69
--- /dev/null
+++ b/slides/internals/php74-arginfo.xml
@@ -0,0 +1,9 @@
+<slide>
+<title>Episode #27: Argument Information</title>
+
+<image filename="nikita-popov.jpg" align="left" attr="Nikita Popov"/>
+
+Episode 27 — Argument Information — Nitita Popov
+???
+</slide>
+
diff --git a/slides/internals/php74-base-convert.xml b/slides/internals/php74-base-convert.xml
new file mode 100644
index 00000000..fcc837a7
--- /dev/null
+++ b/slides/internals/php74-base-convert.xml
@@ -0,0 +1,47 @@
+<slide>
+<title>Episode #15: Base Convert Improvements</title>
+
+Episode 15 — Base Convert Improvements — Scott Dutton
+https://wiki.php.net/rfc/base_convert_improvements#vote — https://github.com/php/php-src/pull/4328/files
+
+<audio filename="scott-dutton.mp3"/>
+
+<image filename="scott-dutton.jpg" align="right" attr="Scott Dutton"/>
+
+<blurb>%base_convert% — ~Convert a number between arbitrary bases~</blurb>
+<example>
+base_convert (string $number, int $fromBase, int $toBase ) : string
+</example>
+
+<blurb>What does this output?</blurb>
+<example>
+&lt;?php
+echo base_convert("hello world", 16, 10), "\n";
+?>
+</example>
+
+<div effect="fade-in">
+<example inline="1" class="result">
+|ffffff|237|
+</example>
+</div>
+
+<div effect="fade-in">
+<blurb>This is what it really does:</blurb>
+<example inline="1">
+&amp;lt;?php
+echo base_convert("|cccccc|h||ff0000|e||cccccc|llo worl||ff0000|d|", 16, 10), "\n";
+?>
+</example>
+</div>
+
+<div effect="fade-in">
+<blurb>In PHP 7.4:</blurb>
+<example class="error">
+Deprecated: Invalid characters passed for attempted conversion, these have been ignored 
+</example>
+</div>
+
+Negative didn't pass
+</slide>
+
diff --git a/slides/internals/php74-concat-operator-precedence.xml b/slides/internals/php74-concat-operator-precedence.xml
new file mode 100644
index 00000000..e1bdb27b
--- /dev/null
+++ b/slides/internals/php74-concat-operator-precedence.xml
@@ -0,0 +1,34 @@
+<slide>
+<title>Episode #10: LSP and Operator Precedence</title>
+
+Episode 10 — LSP and Operator Precedence — Nikita Popov
+https://wiki.php.net/rfc/ternary_associativity — https://github.com/php/php-src/pull/4017/files#diff-02b0ba36e963ebca22e7f764721073a5R1
+http://wiki.php.net/rfc/concatenation_precedence — Deprecate only: https://github.com/php/php-src/pull/4001/files
+
+<blurb>What does this return?</blurb>
+<example>
+&lt;?php
+$a = 3; $b = 7;
+echo "sum: " . $a + $b;
+?>
+</example>
+
+<div effect="fade-in">
+<blurb>Result:</blurb>
+<blurb class="result"><example inline="1">|ffffff|7|</example></blurb>
+</div>
+
+<div effect="fade-in">
+<break/>
+<blurb>In PHP 7.4:</blurb>
+<example class="error">
+Deprecated: The behavior of unparenthesized expressions containing both '.' and '+'/'-' ⏎
+    will change in PHP 8: '+'/'-' will take a higher precedence in Standard input code on line 3
+</example>
+
+<break/>
+<blurb>~The impact to existing open-source code is de facto invisible; all found occurrences are actual bugs. This is a strong indicator that the overall impact will also be very minimal.~</blurb>
+</div>
+
+</slide>
+
diff --git a/slides/internals/php74-custom-serialization-inheritence.xml b/slides/internals/php74-custom-serialization-inheritence.xml
new file mode 100644
index 00000000..6550aef1
--- /dev/null
+++ b/slides/internals/php74-custom-serialization-inheritence.xml
@@ -0,0 +1,30 @@
+<slide>
+<title>New custom object serialization mechanism</title>
+
+<example result="1">
+&lt;?php
+class 🔥 {
+    private $temperature = 5000;
+
+    public function __serialize(): array       { return ['t' => $this->temperature]; }
+    public function __unserialize(array $data) { $this->temperature = $data['t'];    }
+}
+
+class ⭐ extends 🔥 {
+    private $size = 695510000;
+
+    public function __serialize(): array {
+        return [
+            's' => $this->size,
+            '🔥' => parent::__serialize(),
+        ];
+    }
+    public function __unserialize(array $data) {
+        parent::__unserialize( $data['🔥'] );
+        $this->size = $data['s'];
+    }
+}
+echo serialize( $test = new ⭐ );
+</example>
+
+</slide>
diff --git a/slides/internals/php74-custom-serialization.xml b/slides/internals/php74-custom-serialization.xml
new file mode 100644
index 00000000..9f5d5c89
--- /dev/null
+++ b/slides/internals/php74-custom-serialization.xml
@@ -0,0 +1,38 @@
+<slide>
+<title>New custom object serialization mechanism</title>
+
+New custom object serialization mechanism
+https://wiki.php.net/rfc/custom_object_serialization — https://github.com/php/php-src/pull/3761/files
+
+<blurb>PHP's serialisation mechanisms:</blurb>
+<list>
+	<bullet>Serializable interface</bullet>
+	<bullet>The __sleep()/__wakeup() magic methods</bullet>
+</list>
+<div effect="fade-in">
+<list>
+	<bullet>
+		<blurb>Two new *magic methods*:</blurb>
+<example>
+public function __serialize(): array;
+public function __unserialize(array $data): void;
+</example>
+	</bullet>
+</list>
+
+<example>
+class 🔥 {
+    private $temperature;
+
+    public function __serialize(): array {
+        return ["t" => $this->temperature];
+    }
+    public function __unserialize(array $data) {
+        $this->temperature = $data['t'];
+    }
+}
+</example>
+</div>
+
+</slide>
+
diff --git a/slides/internals/php74-deprecate-curly-brace.xml b/slides/internals/php74-deprecate-curly-brace.xml
new file mode 100644
index 00000000..83cd07fa
--- /dev/null
+++ b/slides/internals/php74-deprecate-curly-brace.xml
@@ -0,0 +1,30 @@
+<slide>
+<title>Episode #19: Deprecate curly brace syntax for accessing array elements and string offsets</title>
+
+<audio filename="theodore-brown.mp3"/>
+
+<image filename="theodore-brown-big.jpeg" align="left" attr="Theodore Brown"/>
+Episode 19 — Deprecate curly brace syntax for accessing array elements and string offsets — with Theodore Brown
+https://wiki.php.net/rfc/deprecate_curly_braces_array_access — https://github.com/php/php-src/pull/4416/files
+
+<example result="1">
+&lt;?php
+$🌻 = [ 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144 ];
+echo $🌻[4], "\n";
+echo $🌻{4}, "\n";
+
+$🎄 = "Christmas Tree";
+echo $🎄[4], "\n";
+echo $🎄{4}, "\n";
+?>
+</example>
+
+<div effect="fade-in">
+<blurb>In PHP 7.4:</blurb>
+<example class="error">
+Deprecated: Array and string offset access syntax with curly braces is deprecated
+Deprecated: Array and string offset access syntax with curly braces is deprecated
+</example>
+</div>
+
+</slide>
diff --git a/slides/internals/php74-deprecations.xml b/slides/internals/php74-deprecations.xml
new file mode 100644
index 00000000..0be6369f
--- /dev/null
+++ b/slides/internals/php74-deprecations.xml
@@ -0,0 +1,23 @@
+<slide>
+<title>Deprecations in PHP 7.4</title>
+
+<list class="noicon">
+<bullet>🔥 The ~real~ type</bullet>
+<bullet>🔥 %FILTER_SANITIZE_MAGIC_QUOTES% filter</bullet>
+<bullet>🔥 Magic quotes legacy</bullet>
+<bullet>🔥 %array_key_exists()% with objects</bullet>
+<bullet>🔥 Reflection %export()% methods</bullet>
+<bullet>🔥 %mb_strrpos()% with encoding as 3rd argument</bullet>
+<bullet>🔥 %implode()% parameter order mix</bullet>
+<bullet>🔥 Unbinding %$this% from non-static closures</bullet>
+<bullet>🔥 %hebrevc()% function</bullet>
+<bullet>🔥 %convert_cyr_string()% function</bullet>
+<bullet>🔥 %money_format()% function → %NumberFormatter::formatCurrency()%</bullet>
+<bullet>🔥 %ezmlm_hash()% function</bullet>
+<bullet>🔥 %restore_include_path()% function</bullet>
+<bullet>🔥 %allow_url_include% INI directive</bullet>
+</list>
+
+???
+</slide>
+
diff --git a/slides/internals/php74-ffi-example.xml b/slides/internals/php74-ffi-example.xml
new file mode 100644
index 00000000..d6039255
--- /dev/null
+++ b/slides/internals/php74-ffi-example.xml
@@ -0,0 +1,31 @@
+<slide>
+<title>FFI — Foreign Function Interface</title>
+
+<blurb>Simple header file with defintions:</blurb>
+<example>
+void sunpos(double d, double *L, double *M, double *ra, double *decl, double *rad);
+</example>
+
+<break/>
+
+<blurb>In PHP, load definitions and call:</blurb>
+<example>
+&lt;?php
+$ffi = FFI::load(__DIR__ . '/astro.h');
+
+$dayNr = (time() - 946598400) / 86400.0;
+
+$L    = FFI::new('double');
+$M    = FFI::new('double');
+$ra   = FFI::new('double');
+$decl = FFI::new('double');
+$rad  = FFI::new('double');
+
+$ffi->sunpos(
+	$dayNr,
+	FFI::addr($L), FFI::addr($M), FFI::addr($ra), FFI::addr($decl), FFI::addr($rad)
+);
+</example>
+
+</slide>
+
diff --git a/slides/internals/php74-ffi.xml b/slides/internals/php74-ffi.xml
new file mode 100644
index 00000000..9f447806
--- /dev/null
+++ b/slides/internals/php74-ffi.xml
@@ -0,0 +1,21 @@
+<slide>
+<title>FFI — Foreign Function Interface</title>
+
+FFI - Foreign Function Interface — Dmitri Stogov
+
+<break lines="3"/>
+<blurb class="big-centre">🐲 ¡Here Be Dragons! 🐲</blurb>
+<break lines="1"/>
+
+<list class="centre">
+	<bullet>🔀 A way to directly talk to C libraries from PHP</bullet>
+	<bullet>📕 Bundled with PHP 7.4, but not enabled by default</bullet>
+	<bullet>👷 Consider it experimental</bullet>
+	<bullet>🇫🇷 Documentation, qu'est-ce que c'est?</bullet>
+</list>
+
+<break lines="2"/>
+<blurb align="right">https://wiki.php.net/rfc/ffi</blurb> — https://github.com/php/php-src/commit/e089d506d5c7716c62cee5232d32ab22d0ddde26
+
+</slide>
+
diff --git a/slides/internals/php74-hash-argon.xml b/slides/internals/php74-hash-argon.xml
new file mode 100644
index 00000000..52ca478c
--- /dev/null
+++ b/slides/internals/php74-hash-argon.xml
@@ -0,0 +1,60 @@
+<slide>
+<title>Episode #12: Argon2 support from Sodium</title>
+
+<audio filename="sara-golemon.mp3"/>
+
+<image filename="sara-golemon.jpg" align="right" attr="Sara Golemon"/>
+Episode 12 — Argon — Sara Golemon
+Password Hashing Registry — Sara Golemon
+https://wiki.php.net/rfc/password_registry — https://github.com/php/php-src/pull/3609
+
+<div effect="fade-out">
+<example>
+&lt;?php
+print_r(password_algos());
+?>
+</example>
+
+<blurb>Result</blurb>
+<example inline="1" class="result">
+|ffffff|Array|
+|ffffff|(|
+|ffffff|    [0] => 2y|
+|ffffff|)|
+</example>
+</div>
+
+<div effect="fade-in-out">
+<example inline="1" class="result">
+|ffffff|Array|
+|ffffff|(|
+|ffffff|    [0] => 2y|
+|ffffff|    [1] => argon2i|
+|ffffff|    [2] => argon2id|
+|ffffff|)|
+</example>
+</div>
+
+<div effect="fade-in">
+<example>
+password_hash(string $password, int $algo, array $options) : string
+password_verify(string $password, string $hash) : bool
+</example>
+<blurb>Options:</blurb>
+<list>
+	<bullet>
+    *memory_cost*: Maximum memory to compute the hash. Defaults to 64kb.
+	</bullet>
+	<bullet>
+    *time_cost*: Maximum amount of time to compute the hash. Defaults to 4.
+	</bullet>
+	<bullet>
+    *threads*: Number of threads to use for computing the hash. Defaults to 1.
+	</bullet>
+</list>
+<blurb><small>(The defaults are %PASSWORD_ARGON2_DEFAULT_MEMORY_COST%, %PASSWORD_ARGON2_DEFAULT_TIME_COST%, %PASSWORD_ARGON2_DEFAULT_THREADS%, which may change over time)</small></blurb>
+</div>
+Argon2 support from sodium — Sara Golemon
+https://wiki.php.net/rfc/sodium.argon.hash — https://github.com/php/php-src/pull/4012/files
+</slide>
+
diff --git a/slides/internals/php74-invalid-container-read.xml b/slides/internals/php74-invalid-container-read.xml
new file mode 100644
index 00000000..9731c4e9
--- /dev/null
+++ b/slides/internals/php74-invalid-container-read.xml
@@ -0,0 +1,37 @@
+<slide>
+<title>E_WARNING for invalid container read array-access</title>
+
+E_WARNING for invalid container read array-access — David Walker
+https://wiki.php.net/rfc/notice-for-non-valid-array-container — https://github.com/php/php-src/pull/4386
+
+<example result="0">
+&lt;?php
+xdebug_disable(); error_reporting(-1);
+
+$var = false;
+$var[1][2][3][4][5];
+
+$var = array(123);
+$var[0][1];
+ 
+$a = [null];
+$c = null;
+$b = ($a[0][0] + $c[0]);
+</example>
+
+<div effect="fade-in">
+<example class="error">
+Notice:  Trying to access array offset on value of type bool in /tmp/example.php on line 6
+Notice:  Trying to access array offset on value of type null in /tmp/example.php on line 6
+Notice:  Trying to access array offset on value of type null in /tmp/example.php on line 6
+Notice:  Trying to access array offset on value of type null in /tmp/example.php on line 6
+Notice:  Trying to access array offset on value of type null in /tmp/example.php on line 6
+
+Notice:  Trying to access array offset on value of type int in /tmp/example.php on line 9
+
+Notice:  Trying to access array offset on value of type null in /tmp/example.php on line 13
+Notice:  Trying to access array offset on value of type null in /tmp/example.php on line 13
+</example>
+</div>
+
+</slide>
diff --git a/slides/internals/php74-lsp-operator-precedence-lsp.xml b/slides/internals/php74-lsp-operator-precedence-lsp.xml
new file mode 100644
index 00000000..c8b6d6b4
--- /dev/null
+++ b/slides/internals/php74-lsp-operator-precedence-lsp.xml
@@ -0,0 +1,35 @@
+<slide>
+<title>Episode #10: LSP and Operator Precedence</title>
+
+Episode 10 — LSP and Operator Precedence — Nikita Popov
+https://wiki.php.net/rfc/lsp_errors — https://github.com/php/php-src/pull/4000/files
+https://wiki.php.net/rfc/ternary_associativity — https://github.com/php/php-src/pull/4017/files#diff-02b0ba36e963ebca22e7f764721073a5R1
+http://wiki.php.net/rfc/concatenation_precedence — Deprecate only: https://github.com/php/php-src/pull/4001/files
+
+<div effect="fade-out">
+<blurb>Compare:</blurb>
+<example>
+interface I {
+    public function method(array $a);
+}
+class C implements I {
+    public function method(int $a) {}
+}
+// Fatal error: Declaration of C::method(int $a) must be compatible with I::method(array $a)
+</example>
+
+<blurb>With:</blurb>
+<example>class C1 {
+    public function method(array $a) {}
+}
+class C2 extends C1 {
+    public function method(int $a) {}
+}
+// Warning: Declaration of C2::method(int $a) should be compatible with C1::method(array $a)
+</example>
+</div>
+
+<div effect="fade-in"><blurb class="big-centre"><break lines="2"/>PHP 8 — 😥</blurb></div>
+
+</slide>
+
diff --git a/slides/internals/php74-lsp-operator-precedence.xml b/slides/internals/php74-lsp-operator-precedence.xml
new file mode 100644
index 00000000..9190677a
--- /dev/null
+++ b/slides/internals/php74-lsp-operator-precedence.xml
@@ -0,0 +1,10 @@
+<slide>
+<title>Episode #10: LSP and Operator Precedence</title>
+
+Episode 10 — LSP and Operator Precedence — Nikita Popov
+https://wiki.php.net/rfc/ternary_associativity — https://github.com/php/php-src/pull/4017/files#diff-02b0ba36e963ebca22e7f764721073a5R1
+http://wiki.php.net/rfc/concatenation_precedence — Deprecate only: https://github.com/php/php-src/pull/4001/files
+
+
+</slide>
+
diff --git a/slides/internals/php74-null-coalesce-assignment.xml b/slides/internals/php74-null-coalesce-assignment.xml
new file mode 100644
index 00000000..c876bca9
--- /dev/null
+++ b/slides/internals/php74-null-coalesce-assignment.xml
@@ -0,0 +1,38 @@
+<slide>
+<title>Null Coalescing Assignment Operator</title>
+
+Null Coalescing Assignment Operator — Midori Kocak
+https://wiki.php.net/rfc/null_coalesce_equal_operator — https://github.com/php/php-src/pull/1795
+
+<blurb>Assignment Operator:</blurb>
+<example>
+&lt;?php
+$rad = $degrees * M_PI / 180;
+$angle *= (M_PI / 180);
+?>
+</example>
+
+<break/>
+
+<div effect="fade-in">
+<blurb>Null Coalesce Operator:</blurb>
+<example>
+&lt;?php
+$this->data['comments']['user_id'] = $this->data['comments']['user_id'] ?? 'value';
+?>
+</example>
+</div>
+
+<break/>
+
+<div effect="fade-in">
+<blurb>Null Coalesce Assignment Operator:</blurb>
+<example>
+&lt;?php
+$this->data['comments']['user_id'] ??= 'value';
+?>
+</example>
+</div>
+
+</slide>
+
diff --git a/slides/internals/php74-numeric-literal-separator.xml b/slides/internals/php74-numeric-literal-separator.xml
new file mode 100644
index 00000000..cd84a30b
--- /dev/null
+++ b/slides/internals/php74-numeric-literal-separator.xml
@@ -0,0 +1,51 @@
+<slide>
+<title>Episode #17: Numeric Literal Separator</title>
+
+Episode 17 — Numeric Literal Separator — Theodore Brown and Bishop Bettini
+https://wiki.php.net/rfc/numeric_literal_separator — https://github.com/php/php-src/pull/4165/files
+
+<audio filename="theodore-and-bishop.mp3"/>
+
+<image filename="theodore-brown.jpeg" align="right" attr="Theodore Brown"/>
+<image filename="bishop-bettini.png" align="right" attr="Bishop Bettini"/>
+
+<blurb>Representing big numbers:</blurb>
+<div effect="fade-out">
+<example>
+const ASTRONOMICAL_UNIT = 149597870700;
+const SPEED_OF_LIGHT    = 299792458;
+const EARTH_RADIUS      = 6378137;
+</example>
+</div>
+
+<div effect="fade-in">
+<example>
+const ASTRONOMICAL_UNIT = 149_597_870_700;
+const SPEED_OF_LIGHT    = 299_792_458;
+const EARTH_RADIUS      = 6_378_137;
+</example>
+</div>
+<break lines="3"/>
+<div effect="fade-in">
+<blurb>Also works for floats, hexadecimal, octal, and binary:</blurb>
+<example>
+$π       = 3.141_592_653_589_793_238_462_643_383_279_502_884_197_169_399_375_105_820_974_944_592_307_816_406_286_208_998_628_034_825_342_117_067_982_148_086_513_282_306_647_093_844_609_550_582_231_725_359_408;
+$ttwatch = 0x0085_0001;
+$perms   = 04_755;
+$gpio    = 0b01010100_01101000_01100101_01101111;
+</example>
+</div>
+
+<break/>
+
+<div effect="fade-in">
+<blurb>To avoid:</blurb>
+
+<example>
+$phoneNumber = 345_6789;
+$creditCard = 231_6547_9081_2543;
+$socialSecurity = 111_11_1111;
+</example>
+</div>
+
+</slide>
diff --git a/slides/internals/php74-operator-precedence-ternary.xml b/slides/internals/php74-operator-precedence-ternary.xml
new file mode 100644
index 00000000..a6120833
--- /dev/null
+++ b/slides/internals/php74-operator-precedence-ternary.xml
@@ -0,0 +1,29 @@
+<slide>
+<title>Episode #10: LSP and Operator Precedence</title>
+
+Episode 10 — LSP and Operator Precedence — Nikita Popov
+https://wiki.php.net/rfc/ternary_associativity — https://github.com/php/php-src/pull/4017/files#diff-02b0ba36e963ebca22e7f764721073a5R1
+http://wiki.php.net/rfc/concatenation_precedence — Deprecate only: https://github.com/php/php-src/pull/4001/files
+
+<blurb>What does this return?</blurb>
+<example result="1">
+&lt;?php
+$a = 3;
+echo $a == 1 ? 'one' : $a == 2 ? 'two' : $a == 3 ? 'three' : $a == 4 ? 'four' : 'other', "\n";
+?>
+</example>
+
+<div effect="fade-in">
+<break/>
+<blurb>In PHP 7.4:</blurb>
+<example class="error">
+Deprecated: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in Standard input code on line 3
+
+Deprecated: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in Standard input code on line 3
+
+Deprecated: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in Standard input code on line 3
+</example>
+</div>
+
+</slide>
+
diff --git a/slides/internals/php74-postgresql-escape.xml b/slides/internals/php74-postgresql-escape.xml
new file mode 100644
index 00000000..1c9f8561
--- /dev/null
+++ b/slides/internals/php74-postgresql-escape.xml
@@ -0,0 +1,31 @@
+<slide>
+<title>Episode #22: PostGreSQL escape characters</title>
+
+<audio filename="matteo-becatti.mp3"/>
+
+<image filename="matteo-becatti.png" align="right" attr="Matteo Becatti"/>
+
+Episode 22 — PostGreSQL escape characters — with Matteo Beccati
+
+<blurb>*Given:*</blurb>
+<list>
+	<bullet>*That:* PDO uses %?% as prepared value place holder</bullet>
+	<bullet>*And:* New SQL syntax uses %?% as an operator:
+<example>
+SELECT * FROM tbl WHERE json_col ? 'foo';
+</example>
+	</bullet>
+	<bullet>*Then:* We're in trouble</bullet>
+</list>
+
+<div effect="fade-in">
+<break lines="3"/>
+<blurb>PHP 7.4 has an escape character to provide the solution:</blurb>
+<example inline="1">
+$stmt = $pdo->prepare('SELECT \* FROM tbl WHERE json_col *??* ?');
+</example>
+</div>
+
+https://wiki.php.net/rfc/pdo_escape_placeholders — https://github.com/php/php-src/pull/4217/files#diff-ebfd69a4c47ba09ff22a1b349e499292R22
+</slide>
+
diff --git a/slides/internals/php74-preloading-setup.xml b/slides/internals/php74-preloading-setup.xml
new file mode 100644
index 00000000..f1f2162f
--- /dev/null
+++ b/slides/internals/php74-preloading-setup.xml
@@ -0,0 +1,25 @@
+<slide>
+<title>Preloading</title>
+<subtitle>Example</subtitle>
+
+<blurb>Enable *%opcache.preload%*:</blurb>
+<example inline="1">
+php \
+    -dopcache.enable=1 -dopcache.enable_cli=1 *-d opcache.preload=preload.inc* \
+    -d ffi.enable=1 \
+    -S 0.0.0.0:8080
+</example>
+
+<break lines="2"/>
+
+<blurb>Stats:</blurb>
+<example>
+var_dump(opcache_get_status()['preload_statistics']);
+</example>
+
+<break lines="2"/>
+
+<blurb>Once loaded, only a restart of the web server (or PHP-FPM) will reload files</blurb>
+
+</slide>
+
diff --git a/slides/internals/php74-preloading-with-ffi.xml b/slides/internals/php74-preloading-with-ffi.xml
new file mode 100644
index 00000000..0665998b
--- /dev/null
+++ b/slides/internals/php74-preloading-with-ffi.xml
@@ -0,0 +1,36 @@
+<slide>
+<title>Preloading and FFI</title>
+
+FFI - Foreign Function Interface — Dmitri Stogov
+
+<blurb class="center">🐌 Processing FFI on each request is slow, but preloading is fast! 🚀</blurb>
+
+<break lines="1"/>
+
+<blurb>%preload.inc%:</blurb>
+<example>
+&lt;?php
+FFI::load(__DIR__ . '/astro-preload.h');
+</example>
+
+<blurb>%astro-preload.h%:</blurb>
+<example>
+#define FFI_SCOPE "ASTRO"
+
+void sunpos(double d, double *L, double *M, double *ra, double *decl, double *rad);
+</example>
+
+<blurb>Run:</blurb>
+
+<example>
+&lt;?php
+$ffi = FFI::scope('ASTRO');
+…
+$ffi->sunpos(
+    $dayNr,
+    FFI::addr($L), FFI::addr($M), FFI::addr($ra), FFI::addr($decl), FFI::addr($rad)
+);
+</example>
+
+</slide>
+
diff --git a/slides/internals/php74-preloading-zf.xml b/slides/internals/php74-preloading-zf.xml
new file mode 100644
index 00000000..6a43017b
--- /dev/null
+++ b/slides/internals/php74-preloading-zf.xml
@@ -0,0 +1,31 @@
+<slide>
+<title>Preloading → Zend Framework</title>
+
+<example inline="2">
+&amp;lt;?php
+function _preload( $path, *string $pattern = '/\.php$/'*)
+{
+    if ( is_dir( $path ) ) {
+        if ( $dh = opendir( $path ) ) {
+            while ( ( $file = readdir( $dh ) ) !== false ) {
+                if ( $file !== '.' &amp;&amp; $file !== '..' ) {
+                    _preload( $path . '/' . $file, $pattern );
+                }
+            }
+            closedir( $dh );
+        }
+    } else if ( is_file( $path ) &amp;&amp; preg_match( $pattern, $path ) ) {
+        if ( *!opcache_compile_file($path)* ) {
+            trigger_error( 'Preloading Failed', E_USER_ERROR );
+        }
+    }
+}
+ 
+_preload( '/var/www/ZendFramework/library' );
+</example>
+
+<break/>
+<blurb class="centre">Alternatively, you may just include all files instead of %opcache_compile_file()%</blurb>
+
+</slide>
+
diff --git a/slides/internals/php74-preloading.xml b/slides/internals/php74-preloading.xml
new file mode 100644
index 00000000..3f78a7ac
--- /dev/null
+++ b/slides/internals/php74-preloading.xml
@@ -0,0 +1,22 @@
+<slide>
+<title>Preloading</title>
+
+Preloading — Dmitri Stogov
+
+<list>
+	<bullet>OPcache is awesome</bullet>
+	<bullet>It prevents a lot of work "compiling" PHP files</bullet>
+	<bullet>Still overhead: class resolving, checking whether files have modified, cache size/evictions</bullet>
+</list>
+
+<div effect="fade-in">
+<break lines="2"/>
+<blurb>Added in 7.4:</blurb>
+<blurb class="center">A new %php.ini% directive: *%opcache.preload%*</blurb>
+<blurb>With this directive you can specify a single PHP file which will perform the preloading task.</blurb>
+
+<break lines="2"/>
+<blurb align="right">https://wiki.php.net/rfc/preload</blurb> — https://github.com/php/php-src/pull/3538
+</div>
+</slide>
+
diff --git a/slides/internals/php74-reference-reflection.xml b/slides/internals/php74-reference-reflection.xml
new file mode 100644
index 00000000..407f0341
--- /dev/null
+++ b/slides/internals/php74-reference-reflection.xml
@@ -0,0 +1,43 @@
+<slide>
+<title>Reflection for references</title>
+
+Reflection for references — Nikita Popov
+https://wiki.php.net/rfc/reference_reflection — https://github.com/php/php-src/pull/3550/files#diff-3d0f8818dac092be87cf355bee98bccfR2
+
+<div effect="fade-out">
+<blurb>Detecting if %$array1[$key]% is a reference:</blurb>
+<example>
+&lt;?php
+$array2 = $array1;
+$array2[$key] = $unique_cookie;
+if ($array1[$key] === $unique_cookie) {
+    // $array1[$key] is a reference
+}
+?>
+</example>
+<blurb>No longer will work reliably in PHP 7.4 due to typed properties, so %ReferenceReflection% was added.</blurb>
+</div>
+
+<div effect="fade-in">
+<example result="1">
+&lt;?php
+$array = [0, 1, 2];
+$ref1 =&amp; $array[1];
+$ref2 =&amp; $array[2];
+$array[3] =&amp; $array[2];
+
+$r0 = ReflectionReference::fromArrayElement($array, 0);
+$r1 = ReflectionReference::fromArrayElement($array, 1);
+$r2 = ReflectionReference::fromArrayElement($array, 2);
+$r3 = ReflectionReference::fromArrayElement($array, 3);
+
+var_dump( $r0, $r1 );
+
+echo base64_encode( $r1->getId() ), "\n";
+echo base64_encode( $r2->getId() ), "\n";
+echo base64_encode( $r3->getId() ), "\n";
+</example>
+</div>
+
+</slide>
+
diff --git a/slides/internals/php74-saner-string-number-comparisons.xml b/slides/internals/php74-saner-string-number-comparisons.xml
new file mode 100644
index 00000000..238bbc7e
--- /dev/null
+++ b/slides/internals/php74-saner-string-number-comparisons.xml
@@ -0,0 +1,28 @@
+<slide>
+<title>Episode #1: Saner String Number Comparisons</title>
+
+<audio filename="nikita-popov-first.mp3"/>
+
+<image filename="nikita-popov.jpg" align="left" attr="Nikita Popov"/>
+
+<div effect="fade-out">
+<blurb>Proposal:</blurb>
+
+<table style="width: 70%; align: right; font-size: 200%">
+<tr><th>Comparison</th><th>Before</th><th>After</th></tr>
+<tr><td>% 0 == "0"    %</td><td>true  </td><td>true</td></tr>
+<tr><td>% 0 == "0.0"  %</td><td>true  </td><td>true</td></tr>
+<tr><td>% 0 == "foo"  %</td><td>true  </td><td>false</td></tr>
+<tr><td>% 0 == ""     %</td><td>true  </td><td>false</td></tr>
+<tr><td>%42 == "&#160;&#160;&#160;&#160;42"%</td><td>true  </td><td>true</td></tr>
+<tr><td>%42 == "42foo"%</td><td>true  </td><td>false</td></tr>
+</table>
+
+<blurb align="right">*RFC*: https://wiki.php.net/rfc/string_to_number_comparison</blurb> — https://github.com/php/php-src/pull/3787/files
+</div>
+
+<div effect="fade-in">
+<blurb class="big-centre">PHP 8?</blurb>
+</div>
+</slide>
+
diff --git a/slides/internals/php74-short-arrow-functions-example.xml b/slides/internals/php74-short-arrow-functions-example.xml
new file mode 100644
index 00000000..37de34b7
--- /dev/null
+++ b/slides/internals/php74-short-arrow-functions-example.xml
@@ -0,0 +1,32 @@
+<slide>
+<title>Episode #4: Short Arrow Functions</title>
+
+<blurb>Syntax:</blurb>
+
+<example>
+$arrow = fn($x) => $x + $y;
+</example>
+<break/>
+
+
+<list>
+	<bullet>Variables automatically captured *by-value*</bullet>
+	<bullet>Shorter prefix: %fn%</bullet>
+	<bullet>Implicit return is *one* expression</bullet>
+</list>
+
+<break/>
+
+<blurb>Great for filter:</blurb>
+<example>
+$this->existingSchemaPaths = array_filter($paths, function ($v) use ($names) {
+    return in_array($v, $names);
+});
+</example>
+<blurb>Becomes:</blurb>
+<example>
+$this->existingSchemaPaths = array_filter($paths, fn($v) => in_array($v, $names));
+</example>
+
+</slide>
+
diff --git a/slides/internals/php74-short-arrow-functions.xml b/slides/internals/php74-short-arrow-functions.xml
new file mode 100644
index 00000000..bb4fda4e
--- /dev/null
+++ b/slides/internals/php74-short-arrow-functions.xml
@@ -0,0 +1,38 @@
+<slide>
+<title>Episode #4: Short Arrow Functions</title>
+
+Episode 4 — Short Arrow Functions — Nikita Popov
+
+<audio filename="nikita-popov.mp3"/>
+
+<image filename="nikita-popov.jpg" align="left" attr="Nikita Popov"/>
+
+<blurb>Arrow functions have the following basic form:</blurb>
+
+<example>
+fn(parameter_list) => expr
+</example>
+
+<blurb>Traditional Closure:</blurb>
+
+<example>
+$arrow = function ($x) use ($y) {
+    return $x + $y;
+};
+</example>
+
+<div effect="fade-out">
+<break lines="9"/></div>
+<div effect="fade-in">
+<blurb>New Short Closure:</blurb>
+
+<example>
+$arrow = fn($x) => $x + $y;
+</example>
+<break lines="5"/>
+</div>
+
+<blurb align="right">https://wiki.php.net/rfc/arrow_functions_v2</blurb> — https://github.com/php/php-src/pull/3941/files
+
+</slide>
+
diff --git a/slides/internals/php74-spread-operator.xml b/slides/internals/php74-spread-operator.xml
new file mode 100644
index 00000000..03fbdcd7
--- /dev/null
+++ b/slides/internals/php74-spread-operator.xml
@@ -0,0 +1,17 @@
+<slide>
+<title>Spread Operator in Array Expression</title>
+
+Spread Operator in Array Expression — CHU Zhaowei
+https://wiki.php.net/rfc/spread_operator_for_array — https://github.com/php/php-src/pull/3640/files#diff-09edb373156c57c4d53fe48c3f3b5adbR17
+
+<example class="big" result="1">
+&lt;?php
+$apples = [ '🍎',  '🍏' ];
+$fruits = [ '🍐', '🍑', ...$apples, '🍓',  '🍅' ];
+
+echo "Fruit salad: ", implode( '', $fruits ), "\n";
+?>
+</example>
+
+</slide>
+
diff --git a/slides/internals/php74-timeline.xml b/slides/internals/php74-timeline.xml
new file mode 100644
index 00000000..3aba13ec
--- /dev/null
+++ b/slides/internals/php74-timeline.xml
@@ -0,0 +1,11 @@
+<slide>
+<title>WHEN IS IT READY?!</title>
+
+<break lines="5"/>
+<div effect="fade-in">
+<blurb class="big-centre">November 28th</blurb>
+</div>
+<div effect="fade-in">
+<blurb class="centre">(possibly) 😉 </blurb>
+</div>
+</slide>
diff --git a/slides/internals/php74-typed-properties-read.xml b/slides/internals/php74-typed-properties-read.xml
new file mode 100644
index 00000000..1a72b719
--- /dev/null
+++ b/slides/internals/php74-typed-properties-read.xml
@@ -0,0 +1,27 @@
+<slide>
+<title>Typed Properties</title>
+
+<example>
+&lt;?php
+class 🥃 
+{
+    public    int        $age;
+    protected Distillery $distillery;
+    private   ?Bottler   $bottler;
+}
+
+$whisky = new 🥃;
+
+echo $whisky->age;
+?>
+</example>
+<break/>
+<div effect="fade-in">
+<blurb class="error">
+Error: Typed property 🥃::$age must not be accessed before initialization
+</blurb>
+
+<break lines="2"/>
+<blurb class="centre">Uninitialized state is checked when reading</blurb>
+</div>
+</slide>
diff --git a/slides/internals/php74-typed-properties-write-coersive.xml b/slides/internals/php74-typed-properties-write-coersive.xml
new file mode 100644
index 00000000..81bfc465
--- /dev/null
+++ b/slides/internals/php74-typed-properties-write-coersive.xml
@@ -0,0 +1,25 @@
+<slide>
+<title>Typed Properties</title>
+
+<example result="1">
+&lt;?php
+class 🥃 
+{
+    public    int        $age;
+    protected Distillery $distillery;
+    private   ?Bottler   $bottler;
+}
+
+$whisky = new 🥃;
+$whisky->age = "29";
+
+var_dump($whisky);
+?>
+</example>
+<break/>
+
+<div effect="fade-in">
+<break lines="2"/>
+<blurb class="centre">Type-coercion when %strict_types=0%</blurb>
+</div>
+</slide>
diff --git a/slides/internals/php74-typed-properties-write-strict.xml b/slides/internals/php74-typed-properties-write-strict.xml
new file mode 100644
index 00000000..9fe80e16
--- /dev/null
+++ b/slides/internals/php74-typed-properties-write-strict.xml
@@ -0,0 +1,26 @@
+<slide>
+<title>Typed Properties</title>
+
+<example result="0">
+&lt;?php
+declare(strict_types=1);
+
+class 🥃 
+{
+    public    int        $age;
+    public    Distillery $distillery;
+    private   ?Bottler   $bottler;
+}
+
+$whisky = new 🥃;
+$whisky->age = 29;
+?>
+</example>
+<break/>
+
+<div effect="fade-in">
+<blurb class="error">
+TypeError: Typed property 🥃::$age must be int, string used
+</blurb>
+</div>
+</slide>
diff --git a/slides/internals/php74-typed-properties-write.xml b/slides/internals/php74-typed-properties-write.xml
new file mode 100644
index 00000000..dbde2540
--- /dev/null
+++ b/slides/internals/php74-typed-properties-write.xml
@@ -0,0 +1,27 @@
+<slide>
+<title>Typed Properties</title>
+
+<example result="0">
+&lt;?php
+class 🥃 
+{
+    public    int        $age;
+    public    Distillery $distillery;
+    private   ?Bottler   $bottler;
+}
+
+$whisky = new 🥃;
+$whisky->distillery = "Lagavullin";
+?>
+</example>
+<break/>
+
+<div effect="fade-in">
+<blurb class="error">
+TypeError: Typed property 🥃::$distillery must be an instance of Distillery, string used
+</blurb>
+
+<break lines="2"/>
+<blurb class="centre">Type validation is checked when writing</blurb>
+</div>
+</slide>
diff --git a/slides/internals/php74-typed-properties.xml b/slides/internals/php74-typed-properties.xml
new file mode 100644
index 00000000..d55acfb4
--- /dev/null
+++ b/slides/internals/php74-typed-properties.xml
@@ -0,0 +1,47 @@
+<slide>
+<title>Typed Properties</title>
+Typed Properties 2.0 — Bob Weinand and Nikita Popov
+https://wiki.php.net/rfc/typed_properties_v2 — https://wiki.php.net/rfc/typed_properties_v2
+
+<example>
+&lt;?php
+class 🥃 
+{
+</example>
+<div effect="fade-in">
+<blurb>
+All types with the exception of %void% and %callable% are supported:
+</blurb>
+<example>
+    public    int        $age;
+    protected Distillery $distillery;
+    private   ?Bottler   $bottler;
+</example>
+</div>
+<div effect="fade-in">
+<blurb>
+    Types are also legal on static properties:
+</blurb>
+<example>
+    public static iterable $tastingNotes;
+</example>
+</div>
+<div effect="fade-in">
+<blurb>
+    Typed properties may have default values:
+</blurb>
+<example>
+    public int     $rating = 92;
+    public ?string $nullableStr = null;
+</example>
+</div>
+<div effect="fade-in">
+<blurb>
+    The type applies to all properties in one declaration:
+</blurb>
+<example>
+    public bool $chillFiltered, $colouringAdded;
+}
+</example>
+</div>
+</slide>
diff --git a/slides/internals/php74-unbundle.xml b/slides/internals/php74-unbundle.xml
new file mode 100644
index 00000000..bd657155
--- /dev/null
+++ b/slides/internals/php74-unbundle.xml
@@ -0,0 +1,26 @@
+<slide>
+<title>Unbundling Extensions</title>
+
+<blurb>The following extensions are following 🦕 and 🦖, like when the ☄️  hit:</blurb>
+
+<div effect="fade-in">
+<blurb>%ext/recode%<br/>← <small>Depends on the Recode library which had its latest release in 2001</small><br/>→ Alternative: %iconv%</blurb>
+Unbundle ext/recode
+https://wiki.php.net/rfc/unbundle_recode
+</div>
+
+<div effect="fade-in">
+<break/>
+<blurb>%ext/wddx%<br/>← <small>Entirely useless as everybody now uses JSON for this</small><br/>→ Moved to Siberia^WPECL    ☃️  ❄️  ⛄ </blurb>
+Unbundle ext/wddx
+https://wiki.php.net/rfc/deprecate-and-remove-ext-wddx
+</div>
+
+<div effect="fade-in">
+<break/>
+<blurb>%ext/interbase%<br/>← <small>Access to Interbase and Firebird databases</small><br/>→ Moved to PECL</blurb>
+Deprecate and remove ext/interbase
+https://wiki.php.net/rfc/deprecate-and-remove-ext-interbase
+</div>
+</slide>
+
diff --git a/slides/internals/php74-variance-argument-ok.xml b/slides/internals/php74-variance-argument-ok.xml
new file mode 100644
index 00000000..e11b40ac
--- /dev/null
+++ b/slides/internals/php74-variance-argument-ok.xml
@@ -0,0 +1,24 @@
+<slide>
+<title>Contravariant Argument Types</title>
+
+<example result="1">
+&lt;?php
+class 🐖 {}
+class 🐗 extends 🐖 {}
+
+class Asterix
+{
+	public function hunt(🐗 $animal) {}
+}
+
+class Gauls extends Asterix
+{
+	public function hunt(🐖 $animal) {}
+}
+?>
+</example>
+
+<break lines="2"/>
+<blurb class="center">Arguments types are *contra-variant*:<br/>~they can accept a more broad type~</blurb>
+</slide>
+
diff --git a/slides/internals/php74-variance-argument-wrong.xml b/slides/internals/php74-variance-argument-wrong.xml
new file mode 100644
index 00000000..876174a7
--- /dev/null
+++ b/slides/internals/php74-variance-argument-wrong.xml
@@ -0,0 +1,25 @@
+<slide>
+<title>Contravariant Argument Types</title>
+
+<example result="0">
+&lt;?php
+class 🐖 {}
+class 🐗 extends 🐖 {}
+
+class Asterix
+{
+	public function hunt(🐖 $animal) {}
+}
+
+class Gauls extends Asterix
+{
+	public function hunt(🐗 $animal) {}
+}
+?>
+</example>
+
+<blurb class="error">Warning: Declaration of Gauls::hunt(🐗 $animal) should be compatible with Asterix::hunt(🐖 $animal)</blurb>
+<break lines="2"/>
+<blurb class="center">Arguments types are *contra-variant*:<br/>~they can *not* accept a more specific type~</blurb>
+</slide>
+
diff --git a/slides/internals/php74-variance-properties-ok.xml b/slides/internals/php74-variance-properties-ok.xml
new file mode 100644
index 00000000..492ac4b9
--- /dev/null
+++ b/slides/internals/php74-variance-properties-ok.xml
@@ -0,0 +1,29 @@
+<slide>
+<title>Invariant Property Types</title>
+
+Covariant Returns and Contravariant Parameters — Levi Morrison
+https://wiki.php.net/rfc/covariant-returns-and-contravariant-parameters —
+
+typed properties are invariant
+
+<example>
+&lt;?php
+class 🌐 {}
+class 🌏 extends 🌐 {}
+
+class Bakery
+{
+	public 🌏 $gravity;
+}
+
+class Patisserie extends Bakery
+{
+	public 🌏 $gravity;
+}
+?>
+</example>
+
+<break lines="2"/>
+<blurb class="center">Property types are *in-variant*:<br/>~they can *not* represent a more specific or a more broad type~</blurb>
+</slide>
+
diff --git a/slides/internals/php74-variance-properties-wrong.xml b/slides/internals/php74-variance-properties-wrong.xml
new file mode 100644
index 00000000..c9f6603a
--- /dev/null
+++ b/slides/internals/php74-variance-properties-wrong.xml
@@ -0,0 +1,30 @@
+<slide>
+<title>Invariant Property Types</title>
+
+Covariant Returns and Contravariant Parameters — Levi Morrison
+https://wiki.php.net/rfc/covariant-returns-and-contravariant-parameters —
+
+typed properties are invariant
+
+<example return="1">
+&lt;?php
+class 🌐 {}
+class 🌏 extends 🌐 {}
+
+class Bakery
+{
+	public 🌐 $temperature;
+}
+
+class Patisserie extends Bakery
+{
+	public 🌏 $temperature;
+}
+?>
+</example>
+
+<blurb class="error">Fatal error: Type of Patisserie::$temperature must be 🌐 (as in class Bakery)</blurb>
+<break lines="2"/>
+<blurb class="center">Property types are *in-variant*:<br/>~they can *not* represent a more specific or a more broad type~</blurb>
+</slide>
+
diff --git a/slides/internals/php74-variance-return-ok.xml b/slides/internals/php74-variance-return-ok.xml
new file mode 100644
index 00000000..3bfd3f9e
--- /dev/null
+++ b/slides/internals/php74-variance-return-ok.xml
@@ -0,0 +1,29 @@
+<slide>
+<title>Covariant Return Types</title>
+
+Covariant Returns and Contravariant Parameters — Levi Morrison
+https://wiki.php.net/rfc/covariant-returns-and-contravariant-parameters —
+
+typed properties are invariant
+
+<example result="1">
+&lt;?php
+class 🍞 {}
+class 🥖 extends 🍞 {}
+
+class Bakery
+{
+	public function gimme(): 🍞 {}
+}
+
+class Patisserie extends Bakery
+{
+	public function gimme(): 🥖 {}
+}
+?>
+</example>
+
+<break lines="2"/>
+<blurb class="center">Return types are *co-variant*:<br/>~they can return a more specific type~</blurb>
+</slide>
+
diff --git a/slides/internals/php74-variance-return-wrong.xml b/slides/internals/php74-variance-return-wrong.xml
new file mode 100644
index 00000000..5b4bc7a5
--- /dev/null
+++ b/slides/internals/php74-variance-return-wrong.xml
@@ -0,0 +1,30 @@
+<slide>
+<title>Covariant Return Types</title>
+
+Covariant Returns and Contravariant Parameters — Levi Morrison
+https://wiki.php.net/rfc/covariant-returns-and-contravariant-parameters —
+
+typed properties are invariant
+
+<example>
+&lt;?php
+class 🍞 {}
+class 🥖 extends 🍞 {}
+
+class Bakery
+{
+	public function gimme(): 🥖 {}
+}
+
+class Patisserie extends Bakery
+{
+	public function gimme(): 🍞 {}
+}
+?>
+</example>
+
+<blurb class="error">Fatal error: Declaration of Patisserie::gimme(): 🍞 must be compatible with Bakery::gimme(): 🥖</blurb>
+<break lines="2"/>
+<blurb class="center">Return types are *co-variant*:<br/>~they can *not* return a more broad type~</blurb>
+</slide>
+
diff --git a/slides/internals/php74-weakref.xml b/slides/internals/php74-weakref.xml
new file mode 100644
index 00000000..37373f61
--- /dev/null
+++ b/slides/internals/php74-weakref.xml
@@ -0,0 +1,31 @@
+<slide>
+<title>Episode #3: Weak References</title>
+
+<audio filename="joe-watkins.mp3"/>
+
+<image filename="joe-watkins.jpg" align="left" attr="Joe Watkins"/>
+Episode 3 — Weak References — Joe Watkins
+
+<example>
+final class WeakReference {
+    public static function create(object $object) : WeakReference;
+    public function get() : ?object;
+}
+</example>
+
+<blurb>Example:</blurb>
+<example result="1">
+&lt;?php
+class 👻 { function boo() { echo "BOO!\n"; } }
+$boo = new 👻 ;
+$ref = WeakReference::create( $boo );
+
+$ref->get()->boo();
+unset( $boo );
+var_dump( $ref->get() );
+</example>
+
+
+<blurb align="right">*RFC*: https://wiki.php.net/rfc/weakrefs</blurb> — https://github.com/php/php-src/pull/3787/files
+</slide>
+
diff --git a/slides/internals/phpinternalsnews-me.xml b/slides/internals/phpinternalsnews-me.xml
new file mode 100644
index 00000000..dba2a828
--- /dev/null
+++ b/slides/internals/phpinternalsnews-me.xml
@@ -0,0 +1,7 @@
+<slide>
+<title>Your Host!</title>
+
+<audio filename="phpintnews-intro.mp3"/>
+
+<image filename="phpintnews-small.jpg"/>
+</slide>
diff --git a/slides/internals/phpintnews-intro.mp3 b/slides/internals/phpintnews-intro.mp3
new file mode 100644
index 00000000..383407e1
Binary files /dev/null and b/slides/internals/phpintnews-intro.mp3 differ
diff --git a/slides/internals/phpintnews-outro.mp3 b/slides/internals/phpintnews-outro.mp3
new file mode 100644
index 00000000..edf197d4
Binary files /dev/null and b/slides/internals/phpintnews-outro.mp3 differ
diff --git a/slides/internals/phpintnews.jpg b/slides/internals/phpintnews.jpg
new file mode 100644
index 00000000..0f2399ae
Binary files /dev/null and b/slides/internals/phpintnews.jpg differ
diff --git a/slides/internals/queries.jpg b/slides/internals/queries.jpg
new file mode 100644
index 00000000..91a4b25b
Binary files /dev/null and b/slides/internals/queries.jpg differ
diff --git a/slides/internals/questions-new.xml b/slides/internals/questions-new.xml
new file mode 100644
index 00000000..e3f21586
--- /dev/null
+++ b/slides/internals/questions-new.xml
@@ -0,0 +1,6 @@
+<slide style="title" background="queries.jpg" background_attr="Véronique Debord-Lazaro — https://www.flickr.com/photos/debord/4932655275">
+<title>Any Queries?</title>
+
+<audio filename="phpintnews-outro.mp3"/>
+
+</slide>
diff --git a/slides/internals/sara-golemon.jpg b/slides/internals/sara-golemon.jpg
new file mode 100644
index 00000000..076418e0
Binary files /dev/null and b/slides/internals/sara-golemon.jpg differ
diff --git a/slides/internals/sara-golemon.mp3 b/slides/internals/sara-golemon.mp3
new file mode 100644
index 00000000..92793e83
Binary files /dev/null and b/slides/internals/sara-golemon.mp3 differ
diff --git a/slides/internals/scott-dutton.jpg b/slides/internals/scott-dutton.jpg
new file mode 100644
index 00000000..159a8ad5
Binary files /dev/null and b/slides/internals/scott-dutton.jpg differ
diff --git a/slides/internals/scott-dutton.mp3 b/slides/internals/scott-dutton.mp3
new file mode 100644
index 00000000..1b49b369
Binary files /dev/null and b/slides/internals/scott-dutton.mp3 differ
diff --git a/slides/internals/theodore-and-bishop.mp3 b/slides/internals/theodore-and-bishop.mp3
new file mode 100644
index 00000000..520dfeb3
Binary files /dev/null and b/slides/internals/theodore-and-bishop.mp3 differ
diff --git a/slides/internals/theodore-brown-big.jpeg b/slides/internals/theodore-brown-big.jpeg
new file mode 100644
index 00000000..1ea13556
Binary files /dev/null and b/slides/internals/theodore-brown-big.jpeg differ
diff --git a/slides/internals/theodore-brown.jpeg b/slides/internals/theodore-brown.jpeg
new file mode 100644
index 00000000..e25e395f
Binary files /dev/null and b/slides/internals/theodore-brown.jpeg differ
diff --git a/slides/internals/theodore-brown.mp3 b/slides/internals/theodore-brown.mp3
new file mode 100644
index 00000000..7afd3cda
Binary files /dev/null and b/slides/internals/theodore-brown.mp3 differ
diff --git a/slides/mongodb/me.xml b/slides/mongodb/me.xml
index 61fa13a2..5c7ca251 100644
--- a/slides/mongodb/me.xml
+++ b/slides/mongodb/me.xml
@@ -7,7 +7,7 @@
 	<blurb>Derick Rethans</blurb>
 	<list>
 		<bullet>I'm European, living in London</bullet>
-		<bullet>I work on *PHP things*</bullet>
+		<bullet>PHP 7.4 *Release Manager*</bullet>
 		<bullet>*Xdebug* &amp; PHP's Date/Time support</bullet>
 		<bullet>Host of *https://phpinternals.news* podcast</bullet>
 		<bullet>I ♥🌍 maps, I ♥🍺 beer, I ♥🥃  whisky</bullet>
diff --git a/templates/default/audio.ezt b/templates/default/audio.ezt
new file mode 100644
index 00000000..e01128bf
--- /dev/null
+++ b/templates/default/audio.ezt
@@ -0,0 +1,5 @@
+{use $node, $pres}	
+{var $filename = get_attribute( $node, 'filename' )}
+<audio autoplay>
+<source src="{$pres->base}{$filename}" type="audio/mpeg">
+</audio>
diff --git a/templates/default/example.ezt b/templates/default/example.ezt
index e30c75fe..ffa81fca 100644
--- a/templates/default/example.ezt
+++ b/templates/default/example.ezt
@@ -1,5 +1,7 @@
 {use $pres, $node}
 {var $result}
+{var $class = get_attribute( $node, 'class' )}
+<div{if $class} class='{$class}'{/if}>
 {if get_attribute( $node, 'inline' ) >= 1}
 <pre class='code'>{raw format_text( $pres, $node->nodeValue )}</pre>
 {else}
@@ -22,3 +24,4 @@
 </div>
  {/if}
 {/if}
+</div>
diff --git a/templates/default/table.ezt b/templates/default/table.ezt
index fc5cf6d9..0378b3d8 100644
--- a/templates/default/table.ezt
+++ b/templates/default/table.ezt
@@ -1,7 +1,8 @@
 {use $node, $pres}
 {var $class = get_attribute( $node, 'class' )}
+{var $style = get_attribute( $node, 'style' )}
 <div>
-<table{if $class} class="{$class}"{/if}>
+<table{if $class} class="{$class}"{/if} {if $style} style="{$style}"{/if}>
 {foreach $node->childNodes as $child}
 	{if is_set( $child->tagName )}
 		{include $child->tagName . '.ezt' send $child as $node, $pres}
diff --git a/xdebug-phpworld19.xml b/xdebug-phpworld19.xml
index b3b98d9c..4f3aa062 100644
--- a/xdebug-phpworld19.xml
+++ b/xdebug-phpworld19.xml
@@ -9,7 +9,7 @@
 <email>[email protected]</email>
 <twitter>derickr</twitter>
 <url>https://derickrethans.nl/talks/xdebug-phpworld19</url>
-<joindin></joindin>
+<joindin>https://joind.in/26837</joindin>
 <slide>slides/xdebug/title.xml</slide>
 <slide>slides/mongodb/me.xml</slide>