com presentations: Forgot to upload the Shiftconf slides: shift.html shift.xml
[email protected] (Rasmus Lerdorf) Mon, 11 Jun 2018 19:59:00 +0000
| Newsgroups | php.pres |
|---|---|
| Message-ID | <[email protected]> |
Commit: 128b3e279119b4dac6e6ba8e73cf85e252ef77e4 Author: Rasmus Lerdorf <[email protected]> Mon, 11 Jun 2018 12:58:34 -0700 Parents: b8ee2c9aa3c1cf0401810d84a2b73a718e9d9674 Branches: master Link: http://git.php.net/?p=presentations.git;a=commitdiff;h=128b3e279119b4dac6e6ba8e73cf85e252ef77e4 Log: Forgot to upload the Shiftconf slides Changed paths: A shift.html A shift.xml
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+<!doctype html>
+<html lang="en">
+
+ <head>
+ <meta charset="utf-8">
+
+ <title>PHP in 2018</title>
+
+ <meta name="description" content="PHP in 2018">
+ <meta name="author" content="Rasmus Lerdorf">
+
+ <meta name="apple-mobile-web-app-capable" content="yes" />
+ <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
+
+ <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
+
+ <link rel="stylesheet" href="/reveal.js/css/reveal.css">
+ <link rel="stylesheet" href="/reveal.js/css/theme/white.css" id="theme">
+
+ <!-- For syntax highlighting - note that these are not the generic highlight.js theme files - see https://github.com/nwinkler/reveal-highlight-themes -->
+ <link rel="stylesheet" href="/styles/xcode.css">
+
+ <!-- Override a few styles -->
+ <style>
+ /*
+ Not actually sure why this block isn't being picked up from the syntax highlight css
+ If you change the syntax highlight theme, copy the first block here
+ */
+ .reveal pre {
+ width: 100%;
+ }
+
+ .reveal pre code {
+ display: block;
+ max-height: 600px;
+ overflow-x: auto;
+ padding: 0.5em;
+ line-height: 125%;
+ background: #fff;
+ color: black;
+ -webkit-text-size-adjust: none;
+ }
+
+ .reveal section img {
+ box-shadow: none;
+ border: none;
+ }
+
+ .reveal code.shell {
+ display: block;
+ overflow-x: auto;
+ padding: 0.5em;
+ background: #000;
+ color: #ddd;
+ line-height: 125%;
+ -webkit-text-size-adjust: none;
+ }
+
+ .reveal code.result {
+ display: block;
+ overflow-x: auto;
+ padding: 0.5em;
+ background: #ddd;
+ color: #000;
+ line-height: 125%;
+ -webkit-text-size-adjust: none;
+ }
+
+ /* Left-align h3 and h4 if they are p elements */
+ h3.p {
+ text-align: left;
+ }
+ h4.p {
+ text-align: left;
+ }
+ /* and left-aligned but slightly indented bullet lists */
+ .reveal ul {
+ display: block;
+ margin: 0 0 1em 3em;
+ }
+ /* Example titles */
+ p.example {
+ text-align: left;
+ margin: 0 0 -0.5em 1em;
+ font-weight: bold;
+ }
+ /* Example output style */
+ pre.output {
+ display: block;
+ overflow-x: auto;
+ padding: 0.5em;
+ background: #ddd;
+ color: black;
+ line-height: 200%;
+ -webkit-text-size-adjust: none;
+ }
+
+ </style>
+
+ <!-- Printing and PDF exports -->
+ <script>
+ var link = document.createElement( 'link' );
+ link.rel = 'stylesheet';
+ link.type = 'text/css';
+ link.href = window.location.search.match( /print-pdf/gi ) ? '/reveal.js/css/print/pdf.css' : '/reveal.js/css/print/paper.css';
+ document.getElementsByTagName( 'head' )[0].appendChild( link );
+ </script>
+
+ <!-- Needed for charts to work. Fall back to network if no local copy -->
+ <script type='text/javascript' src='/jquery.min.js'></script>
+ <script>window.jQuery || document.write('<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js">\x3C/script>')</script>
+ <script src="/highcharts.js"></script>
+ <script>window.Highcharts || document.write('<script src="http://code.highcharts.com/highcharts.js">\x3C/script>')</script>
+
+ <!--[if lt IE 9]>
+ <script src="/reveal.js/lib/js/html5shiv.js"></script>
+ <![endif]-->
+ </head>
+
+ <body>
+
+ <div class="reveal">
+
+ <!-- Any section element inside of this container is displayed as a slide -->
+ <div class="slides">
+ <section>
+ <h1>PHP in 2018</h1>
+ <h3>Shift Dev Conf</h3>
+ <h3>Split</h3>
+ <h3>June 1, 2018</h3>
+ <a href="http://talks.php.net/shift">http://talks.php.net/shift</a><br><br>
+ <p>Rasmus Lerdorf<br>
+ <small><a href="http://twitter.com/@rasmus">@rasmus</a></small>
+ </p>
+ <aside class="notes">
+ </aside>
+ </section>
+ <section>
+ <section id="hist_80s">
+ <h1 style="text-align:center;text-transform:none">1980s</h1>
+ <img src="/presentations/slides/intro/timex.jpg" align="center" width="" height="">
+ </section>
+<section id="hist_80s_1">
+ <img src="/presentations/slides/intro/vic20.jpg" align="center" width="" height="">
+ </section>
+<section id="hist_80s_2">
+ <img src="/presentations/slides/intro/hayes.jpg" align="center" width="" height="">
+ </section>
+<section id="hist_80s_3">
+ <img src="/presentations/slides/intro/Zmodem.gif" align="center" width="" height="">
+ </section> </section>
+ <section>
+ <section id="hist_90s">
+ <h1 style="text-align:center;text-transform:none">1990s</h1>
+ <img src="/presentations/slides/intro/gopher.gif" align="center" width="" height="">
+ </section>
+<section id="hist_90s_1">
+ <img src="/presentations/slides/intro/mosaic.jpg" align="center" width="" height="">
+ </section> </section>
+ <section>
+ <section id="hist_1993">
+ <h3 class="p" style="text-align:center;">1993</h3>
+ <pre><code class="C" data-trim style="font-size:0.8em;" >#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+#define ishex(x) (((x) >= '0' && (x) <= '9') || ((x) >= 'a' && \
+ (x) <= 'f') || ((x) >= 'A' && (x) <= 'F'))
+
+int htoi(char *s) {
+ int value;
+ char c;
+
+ c = s[0];
+ if(isupper(c)) c = tolower(c);
+ value=(c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10) * 16;
+
+ c = s[1];
+ if(isupper(c)) c = tolower(c);
+ value += c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10;
+
+ return(value);
+}
+
+void main(int argc, char *argv[]) {
+ char *params, *data, *dest, *s, *tmp;
+ char *name, *age;
+
+ puts("Content-type: text/html\r\n");
+ puts("<HTML><HEAD><TITLE>Form Example</TITLE></HEAD>");
+ puts("<BODY><H1>My Example Form</H1>");
+ puts("<FORM action=\"form.cgi\" method=\"GET\">");
+ puts("Name: <INPUT type=\"text\" name=\"name\">");
+ puts("Age: <INPUT type=\"text\" name=\"age\">");
+ puts("<BR><INPUT type=\"submit\">");
+ puts("</FORM>");
+
+ data = getenv("QUERY_STRING");
+ if(data && *data) {
+ params = data; dest = data;
+ while(*data) {
+ if(*data=='+') *dest=' ';
+ else if(*data == '%' && ishex(*(data+1))&&ishex(*(data+2))) {
+ *dest = (char) htoi(data + 1);
+ data+=2;
+ } else *dest = *data;
+ data++;
+ dest++;
+ }
+ *dest = '\0';
+ s = strtok(params,"&");
+ do {
+ tmp = strchr(s,'=');
+ if(tmp) {
+ *tmp = '\0';
+ if(!strcmp(s,"name")) name = tmp+1;
+ else if(!strcmp(s,"age")) age = tmp+1;
+ }
+ } while(s=strtok(NULL,"&"));
+
+ printf("Hi %s, you are %s years old\n",name,age);
+ }
+ puts("</BODY></HTML>");
+}</code></pre>
+ </section> </section>
+ <section>
+ <section id="hist_1993_2">
+ <h3 class="p" style="text-align:center;">1993</h3>
+ <pre><code class="Perl" data-trim >use CGI qw(:standard);
+print header;
+print start_html('Form Example'),
+ h1('My Example Form'),
+ start_form,
+ "Name: ", textfield('name'),
+ p,
+ "Age: ", textfield('age'),
+ p,
+ submit,
+ end_form;
+if(param()) {
+ print "Hi ",em(param('name')),
+ "You are ",em(param('age')),
+ " years old";
+}
+print end_html;</code></pre>
+ </section> </section>
+ <section>
+ <section id="hist_1994">
+ <h3 class="p" style="text-align:center;">1994-1995</h3>
+ <pre><code class="PHP" data-trim ><html><head><title>Form Example</title></head>
+<body><h1>My Example Form</h1>
+<form action="form.phtml" method="POST">
+Name: <input type="text" name="name">
+Age: <input type="text" name="age">
+<br><input type="submit">
+</form>
+<?if($name):?>
+Hi <?echo $name?>, you are <?echo $age?> years old
+<?endif?>
+</body></html></code></pre>
+ </section> </section>
+ <section>
+ <section id="php7_speed">
+ <img src="/presentations/slides/intro/php7trans-200.png" width="" height="">
+ <p class="p" style="font-size:1.1em;text-align:left;">✔ engine improvements</p>
+ <ul>
+ <li style="font-size: 1em;">100%+ performance gain on most real-world applications</li>
+ <li style="font-size: 1em;">Lower memory usage, sometimes drastically lower</li>
+ </ul>
+ </section> </section>
+ <section>
+ <section id="php7perfdetail">
+ <h1 style="text-align:center;">JIT?</h1>
+ </section>
+<section id="php7perfdetail1">
+ <p class="p" style="font-size:1.1em;">Improve CPU cache usage</p>
+ <ul>
+ <li style="font-size: 1em;list-style-type: none;">Step 1: Decrease overall data</li>
+ <li style="font-size: 1em;list-style-type: none;">Step 2: Better data locality and less indirections</li>
+ <li style="font-size: 1em;list-style-type: none;">Step 3: Save the world!</li>
+ </ul>
+ </section>
+<section id="php7perfdetail1">
+ <ul>
+ <li style="font-size: 1em;list-style-type: none;">zval size reduced from 24 to 16 bytes</li>
+ <li style="font-size: 1em;list-style-type: none;">Hashtable size reduced from 72 to 56 bytes</li>
+ <li style="font-size: 1em;list-style-type: none;">Hashtable bucket size reduced from 72 to 32 bytes</li>
+ <li style="font-size: 1em;list-style-type: none;">Immutable array optimization</li>
+ </ul>
+ <pre><code data-trim style="font-size:1.1em;" >$a = [];
+for($i=0; $i < 100000;$i++) {
+ $a[] = ['abc','def','ghi','jkl','mno','pqr'];
+}
+echo memory_get_usage(true);
+
+// PHP 5.x 109M
+// PHP 7.0 42M no opcache
+// PHP 7.0 6M with opcache enabled</code></pre>
+ </section>
+<section id="php7perfdetail2">
+ <ul>
+ <li style="font-size: 1em;list-style-type: none;">New memory allocator similar to jemalloc</li>
+ <li style="font-size: 1em;list-style-type: none;">Faster hashtable iteration API</li>
+ <li style="font-size: 1em;list-style-type: none;">Array duplication optimization</li>
+ <li style="font-size: 1em;list-style-type: none;">PCRE JIT enabled by default</li>
+ <li style="font-size: 1em;list-style-type: none;">Precomputed string hashes</li>
+ <li style="font-size: 1em;list-style-type: none;">Fast ZPP (ZendParseParameters) implementation</li>
+ <li style="font-size: 1em;list-style-type: none;">Faster stack-allocated zvals (instead of heap)</li>
+ <li style="font-size: 1em;list-style-type: none;">Optimized VM calling</li>
+ <li style="font-size: 1em;list-style-type: none;">Global register variables with gcc 4.8+</li>
+ <li style="font-size: 1em;list-style-type: none;">plus hundreds of micro-optimizations</li>
+ </ul>
+ </section>
+<section id="php7detail4">
+ <h1 style="text-align:center;">JIT?</h1>
+ </section> </section>
+ <section>
+ <section id="wpbench">
+
+<div id="wpbench_container" class="stretch" style="margin: 0 auto"></div>
+<script src="presentations/slides/intro/wp2017may.js"></script>
+ </section>
+<section id="fdo">
+ <p class="p" style="font-size:1.1em;text-align:center;">GCC Feedback-Directed Optimization (FDO)</p>
+ <pre><code class="shell nohighlight" data-trim style="font-size:1em;" >$ gcc --version
+gcc (Debian 6.3.0-14) 6.3.0 20170415
+
+$ make clean
+$ make -j8 prof-gen
+...
+$ sapi/cgi/php-cgi -T 1000 /var/www/wordpress/index.php > /dev/null
+$ make prof-clean
+$ make -j8 prof-use</code></pre>
+ </section> </section>
+ <section>
+ <section id="smemwp">
+
+<div id="smemwp_container" class="stretch" style="margin: 0 auto"></div>
+<script src="presentations/slides/intro/smemwp2017.js"></script>
+ </section> </section>
+ <section>
+ <section id="prod_perc95">
+ <h2 margin-bottom="2em">PHP 7 in production</h2><br>
+ <img src="/presentations/slides/intro/perc95.png" align="center" width="882" height="465">
+ </section>
+<section id="prod_cpu">
+ <img src="/presentations/slides/intro/cpu.png" align="center" width="882" height="465">
+ </section>
+<section id="prod_mem">
+ <img src="/presentations/slides/intro/mem.png" align="center" width="882" height="465">
+ </section> </section>
+ <section>
+ <section id="impact">
+ <h1 style="text-align:center;">Saving the Planet?</h1>
+ </section>
+<section id="impact1">
+ <ul>
+ <li style="font-size: 1.5em;margin-left: -1em;">Around 2 billion sites on the web</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">On 10 million physical machines</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">PHP drives at least 50%</li>
+ </ul>
+ </section>
+<section id="impact2">
+ <ul>
+ <li style="font-size: 1.5em;margin-left: -1em;">Currently ~5% PHP 7 Adoption</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">which is about 250k physical servers</li>
+ </ul>
+ </section>
+<section id="impact3">
+ <ul>
+ <li style="font-size: 1.5em;margin-left: -1em;">3000 KWH/year per server costs approx. US$400</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">Data center cooling doubles that</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">0.5kg CO2 per KWH</li>
+ </ul>
+ </section>
+<section id="impact4">
+ <p class="p" style="font-size:2em;text-align:left;">At 5% Adoption</p>
+ <ul>
+ <li style="font-size: 1.5em;margin-left: -1em;">US $200M savings</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">750M KWH Savings</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">375M kg less CO2</li>
+ </ul>
+ </section>
+<section id="impact5">
+ <p class="p" style="font-size:2em;text-align:left;">At 100% Adoption</p>
+ <ul>
+ <li style="font-size: 1.5em;margin-left: -1em;">$4B savings</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">15B KWH Savings</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">7.5B kg less CO2</li>
+ </ul>
+ </section>
+<section id="impact6">
+ <h1 style="text-align:center;">Do your part</h1>
+ <h1 style="text-align:center;">Upgrade to PHP 7!</h1>
+ </section> </section>
+ <section>
+ <section id="php72">
+ <h1 style="text-align:center;">PHP 7.2</h1>
+ </section>
+<section id="php72_opt">
+ <p class="p" style="font-size:1.6em;text-align:left;">Initial DCE and SCCP optimizations</p>
+ </section>
+<section id="php72_widening">
+ <p class="p" style="font-size:1.1em;text-align:left;">Parameter Type Widening</p>
+ <pre><code data-trim style="font-size:1.1em;" >class Orig {
+ public function fn(array $arg) { }
+}
+class Wider extends Orig {
+ public function fn($arg) { }
+}</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">In PHP 7.1 you would get:</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1em;" >Warning: Declaration of Wider::fn($arg) should be
+ compatible with Orig::fn(array $arg)</code></pre>
+ </section>
+<section id="php72_commas">
+ <p class="p" style="font-size:1.1em;text-align:left;">Allow trailing commas everywhere</p>
+ <pre><code data-trim style="font-size:1em;" >// Arrays (already possible)
+$array = [1, 2, 3,];
+
+// Grouped namepaces
+use Foo\Bar\{ Foo, Bar, Baz, };
+
+// Function/method arguments (call)
+fooCall($arg1, $arg2, $arg3,);
+
+use Foo\Bar\{ Foo, Bar, Baz, };
+
+class Foo implements
+ // Interface implementations on a class
+ FooInterface,
+ BarInterface,
+ BazInterface,
+{
+ // Trait implementations on a class
+ use
+ FooTrait,
+ BarTrait,
+ BazTrait,
+ ;
+
+ // Class member lists
+ const
+ A = 1010,
+ B = 1021,
+ C = 1032,
+ D = 1043,
+ ;</code></pre>
+ </section>
+<section id="php72_object">
+ <p class="p" style="font-size:1.1em;text-align:left;">Object typehint</p>
+ <pre><code data-trim style="font-size:1.05em;" >function fn(object $obj): object {
+ return json_decode('{}');
+}
+fn("not an object");</code></pre>
+ <pre><code class="result nohighlight" data-trim style="font-size:0.9em;" >Warning: Uncaught TypeError: Argument 1 passed to fn() must be an object,
+ string given, called in php shell code on line 1 and defined in ...</code></pre>
+ </section>
+<section id="php72_unqouted">
+ <p class="p" style="font-size:1.1em;text-align:left;">Deprecate unquoted strings</p>
+ <pre><code data-trim style="font-size:1.05em;" >echo HELLO;</code></pre>
+ <pre><code class="result nohighlight" data-trim style="font-size:0.9em;" >Warning: Use of undefined constant HELLO - assumed 'HELLO' (this will throw
+ an Error in a future version of PHP) in php shell code on line 1</code></pre>
+ </section>
+<section id="php72_mail">
+ <p class="p" style="font-size:1.1em;text-align:left;">extra headers array arg for mail() and mb_send_mail()</p>
+ <pre><code data-trim style="font-size:1.05em;" >$to = '[email protected]';
+$subject = 'the subject';
+$message = 'hello';
+$headers = ['From' => '[email protected]',
+ 'Reply-To' => '[email protected]',
+ 'X-Mailer' => 'PHP/' . phpversion() ];
+
+mail($to, $subject, $message, $headers);</code></pre>
+ </section>
+<section id="php72_argon2i">
+ <p class="p" style="font-size:1.1em;text-align:left;">Argon2i added to password_hash()</p>
+ <pre><code data-trim style="font-size:1.05em;" >$options = [
+ 'memory_cost' => 2048,
+ 'time_cost' => 10,
+ 'threads' => 2
+];
+echo password_hash("rasmuslerdorf", PASSWORD_ARGON2I, $options);</code></pre>
+ <pre><code class="result nohighlight" data-trim style="font-size:0.9em;" >$argon2i$v=19$m=2048,t=10,p=2$akUuWkoxRDlMSi5TVGhYLg$j0D1Cl4aR8UMHOGGx5JtZ1BmCApr8RmOJA9qFWm5mz8</code></pre>
+ </section>
+<section id="php72_sodium">
+ <p class="p" style="font-size:1.1em;text-align:left;">Add Sodium Crypto Library</p>
+ <pre><code data-trim style="font-size:1.05em;" >// On Alice's computer:
+$msg = 'This comes from Alice.';
+$signed_msg = sodium_crypto_sign($msg, $secret_sign_key);</code></pre>
+ <pre><code data-trim style="font-size:1.05em;" >// On Bob's computer:
+$original_msg = sodium_crypto_sign_open($signed_msg, $alice_sign_publickey);
+if ($original_msg === false) {
+ throw new Exception("Invalid signature");
+} else {
+ echo $original_msg; // Displays "This comes from Alice."
+}</code></pre>
+ <div align="" style="font-size: 1em; color: ; text-align: ; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;">see: <a href="https://paragonie.com/book/pecl-libsodium" target="">https://paragonie.com/book/pecl-libsodium</a></div>
+ </section>
+<section id="php72cleanups">
+ <p class="p" style="font-size:1.1em;text-align:left;">Things that may break your code</p>
+ <ul>
+ <li style="font-size: 0.8em;margin-left: -1em;">mcrypt extension has been removed</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">__autoload() deprecated, use spl_autoload_register()</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">create_function() deprecated, use anonymous functions</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">each() deprecated, use foreach()</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">read_exif_data() deprecated, use exif_read_data()</li>
+ </ul>
+ <p class="p" style="font-size:1.1em;text-align:left;">Full details are at:</p>
+ <div align="" style="font-size: 0.8em; color: ; text-align: ; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/php/php-src/blob/PHP-7.2/UPGRADING" target="">https://github.com/php/php-src/blob/PHP-7.2/UPGRADING</a></div>
+ <p class="p" style="font-size:1.1em;text-align:left;">And for extension authors:</p>
+ <div align="" style="font-size: 0.8em; color: ; text-align: ; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/php/php-src/blob/PHP-7.2/UPGRADING.INTERNALS" target="">https://github.com/php/php-src/blob/PHP-7.2/UPGRADING.INTERNALS</a></div>
+ </section> </section>
+ <section>
+ <section id="dce">
+ <p class="p" style="font-size:2em;text-align:center;">Dead Code Elimination (DCE)</p>
+ <p class="p" style="font-size:1.5em;text-align:center;">Escape Analysis</p>
+ <p class="p" style="font-size:1.4em;text-align:center;">Sparse Conditional Constant Propagation</p>
+ </section>
+<section id="dce0">
+ <pre><code class="result nohighlight" data-trim style="font-size:0.9em;" >php -d opcache.optimization_level=-1 -d opcache.opt_debug_level=0x20000 script</code></pre>
+ <pre><code data-trim style="font-size:1.05em;" >function fn() {
+ $a = 1;
+ return 0;
+}</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.1</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1em;" >fn: (lines=2, args=0, vars=1, tmps=0)
+L0: ASSIGN CV0($a) int(1)
+L1: RETURN int(0)</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.2</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1em;" >fn: (lines=1, args=0, vars=0, tmps=0)
+L0: RETURN int(0)</code></pre>
+ </section>
+<section id="dce1">
+ <pre><code data-trim style="font-size:1.05em;" >function foo(string $s1, string $s2, string $s3, string $s4) {
+ $x = ($s1 . $s2) . ($s3 . $s4);
+ $x = 0;
+ return $x;
+}</code></pre>
+ <pre><code class="result nohighlight" data-trim style="font-size:1em;" >PHP 7.1 PHP 7.2
+foo: (lines=10, args=4, vars=5, tmps=3) foo: (lines=5, args=4, vars=4, tmps=3)
+L0: CV0($s1) = RECV 1 L0: CV0($s1) = RECV 1
+L1: CV1($s2) = RECV 2 L1: CV1($s2) = RECV 2
+L2: CV2($s3) = RECV 3 L2: CV2($s3) = RECV 3
+L3: CV3($s4) = RECV 4 L3: CV3($s4) = RECV 4
+L4: T6 = CONCAT CV0($s1) CV1($s2) L4: RETURN int(0)
+L5: T7 = CONCAT CV2($s3) CV3($s4)
+L6: T5 = CONCAT T6 T7
+L7: ASSIGN CV4($x) T5
+L8: ASSIGN CV4($x) int(0)
+L9: RETURN CV4($x)</code></pre>
+ </section>
+<section id="dce2">
+ <p class="p" style="font-size:1.1em;text-align:left;">Try to trick it</p>
+ <pre><code data-trim style="font-size:1.05em;" >function foo($a) {
+ $b = $a += 3;
+ return $a;
+}</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.2</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1em;" >foo: (lines=3, args=1, vars=1, tmps=1)
+L0: CV0($a) = RECV 1
+L1: ASSIGN_ADD CV0($a) int(3)
+L2: RETURN CV0($a)</code></pre>
+ </section>
+<section id="dce3">
+ <p class="p" style="font-size:1.1em;text-align:left;">But...</p>
+ <pre><code data-trim style="font-size:1.05em;" >function foo(int $x, int $y) {
+ $a = [$x];
+ $a[1] = $y;
+ $a = $y;
+ return $a;
+}</code></pre>
+ <pre><code class="result nohighlight" data-trim style="font-size:1em;" >PHP 7.2 PHP 7.3
+foo: (lines=7, args=2, vars=3, tmps=1) foo: (lines=4, args=2, vars=3, tmps=0)
+L0: CV0($x) = RECV 1 L0: CV0($x) = RECV 1
+L1: CV1($y) = RECV 2 L1: CV1($y) = RECV 2
+L2: CV2($a) = INIT_ARRAY 1 CV0($x) NEXT L2: CV2($a) = QM_ASSIGN CV1($y)
+L3: ASSIGN_DIM CV2($a) int(1) L3: RETURN CV2($a)
+L4: OP_DATA CV1($y)
+L5: ASSIGN CV2($a) CV1($y)
+L6: RETURN CV2($a)</code></pre>
+ </section>
+<section id="dce4">
+ <pre><code data-trim style="font-size:1.05em;" >class A { }
+function foo(int $x) {
+ $a = new A;
+ $a->foo = $x;
+ return $x;
+}</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.3</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1.05em;" >foo: (lines=2, args=1, vars=1, tmps=0)
+L0: CV0($x) = RECV 1
+L1: RETURN CV0($x)</code></pre>
+ </section>
+<section id="dce5">
+ <pre><code data-trim style="font-size:1.05em;" >class A {
+ function __destruct() {}
+}
+function foo(int $x) {
+ $a = new A;
+ $a->foo = $x;
+ return $x;
+}</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.3</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1.05em;" >foo: (lines=7, args=1, vars=2, tmps=1)
+L0: CV0($x) = RECV 1
+L1: V2 = NEW 0 string("A")
+L2: DO_FCALL
+L3: CV1($a) = QM_ASSIGN V2
+L4: ASSIGN_OBJ CV1($a) string("foo")
+L5: OP_DATA CV0($x)
+L6: RETURN CV0($x)</code></pre>
+ </section>
+<section id="dce6">
+ <pre><code data-trim style="font-size:1.05em;" >function foo() {
+ $a = 1;
+ $b = $a + 2;
+ $a += $b;
+ return $a;
+}</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.2</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1.05em;" >foo: (lines=1, args=0, vars=0, tmps=1)
+L0: RETURN int(4)</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.3</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1.05em;" >foo: (lines=1, args=0, vars=0, tmps=0)
+L0: RETURN int(4)</code></pre>
+ </section>
+<section id="dce7">
+ <pre><code data-trim style="font-size:1.05em;" >function foo(int $x) {
+ if ($x) {
+ $a = [0,1];
+ } else {
+ $a = [0,2];
+ }
+ return $a[0];
+}</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.3</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1.05em;" >foo: (lines=2, args=1, vars=1, tmps=0)
+L0: CV0($x) = RECV 1
+L1: RETURN int(0)</code></pre>
+ </section>
+<section id="dce8">
+ <pre><code data-trim style="font-size:1.05em;" >function foo() {
+ $o = new stdClass();
+ $o->foo = 0;
+ $i = 1;
+ $c = $i < 2;
+ if ($c) {
+ $k = 2 * $i;
+ $o->foo = $i;
+ echo $o->foo;
+ }
+ $o->foo += 2;
+ $o->foo++;
+ return $o->foo;
+}</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">PHP 7.3</p>
+ <pre><code class="result nohighlight" data-trim style="font-size:1.05em;" >foo: (lines=2, args=0, vars=0, tmps=0)
+L0: ECHO int(1)
+L1: RETURN int(4)</code></pre>
+ </section> </section>
+ <section>
+ <section id="phan">
+ <h1 style="text-align:center;">Static Analysis</h1>
+<br/>
+<br/>
+ <div align="center" style="font-size: 2em; color: ; text-align: center; margin-left: ; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/phan/phan" target="">github.com/phan/phan</a></div>
+ </section>
+<section id="phan0">
+ <p class="p" style="font-size:1.5em;text-align:left;">Install with composer</p>
+ <pre><code class="shell nohighlight" data-trim style="font-size:1em;" >$ composer require --dev phan/phan</code></pre>
+ <p class="p" style="font-size:1.5em;text-align:left;">Create .phan/config.php</p>
+ <pre><code class="shell nohighlight" data-trim style="font-size:1em;" >$ phan --init</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:1em;" >$ ./vendor/bin/phan</code></pre>
+ </section>
+<section id="phan1">
+ <p class="p" style="font-size:2em;text-align:left;">Checks</p>
+ <ul>
+ <li>phpdoc type annotations</li>
+ <li>Everything is defined and accessible</li>
+ <li>Type safety</li>
+ <li>PHP version compatibility</li>
+ <li>No-ops</li>
+ <li>Unreachable code</li>
+ <li>Unused use statements</li>
+ <li>Redefinitions</li>
+ <li>Signature compatibility and final on inheritance</li>
+ <li>and many more</li>
+ </ul>
+ </section>
+<section id="phan2">
+ <p class="p" style="font-size:1.5em;text-align:left;">User plugins</p>
+ <div align="center" style="font-size: 1.5em; color: ; text-align: center; margin-left: ; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/phan/phan/wiki/Writing-Plugins-for-Phan" target="">Writing Plugins for Phan</a></div>
+ <p class="p" style="font-size:1.5em;text-align:left;">Included sample plugins</p>
+ <ul>
+ <li>DemoPlugin</li>
+ <li>PregRegexCheckerPlugin</li>
+ <li>PrintfRegexCheckerPlugin</li>
+ <li>UnreachableCodePlugin</li>
+ <li>DollarDollarPlugin</li>
+ <li>NonBoolBranchPlugin</li>
+ <li>NumericalComparisonPlugin</li>
+ </ul>
+ </section>
+<section id="phan3">
+ <p class="p" style="font-size:2em;text-align:left;">Daemon mode</p>
+ <div id="container">
+ <video id='video' controls="controls" preload='none'
+ width="1848" >
+ <source id='mp4' src="presentations/slides/intro/phanvid.mp4" type='video/mp4'/>
+ <p>Your user agent does not support the HTML5 Video element.</p>
+ </video>
+ </div> </section> </section>
+ <section>
+ <section id="thank_you">
+ <h2 style="text-align:center;">Thank You</h2>
+ <div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href=":-:url:-:" target="">http://talks.php.net/shift</a></div>
+ <div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/phan/phan" target="">https://github.com/phan/phan</a></div>
+ <div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://paragonie.com/book/pecl-libsodium" target="">https://paragonie.com/book/pecl-libsodium</a></div>
+ <div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/php/php-src/blob/PHP-7.2/UPGRADING" target="">https://github.com/php/php-src/blob/PHP-7.2/UPGRADING</a></div>
+ <div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://bugs.php.net" target="">https://bugs.php.net</a></div>
+<br/>
+<br/>
+<br/>
+ <p class="p" style="font-size:1.1em;">Report Bugs</p>
+ <p class="p" style="font-size:1.1em;">Useful bug reports, please!</p>
+ </section> </section>
+ </div>
+
+ </div>
+
+ <script src="/reveal.js/lib/js/head.min.js"></script>
+ <script src="/reveal.js/js/reveal.js"></script>
+
+ <script>
+
+ Reveal.initialize({
+ controls: true,
+ progress: true,
+ history: true,
+ center: true,
+ width: 1024,
+ height: 768,
+
+ transition: 'slide', // none/fade/slide/convex/concave/zoom
+ transitionSpeed: 'fast',
+
+ // Optional reveal.js plugins
+ dependencies: [
+ { src: '/reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
+ { src: '/highlight.min.js', async: true, condition: function() { return !!document.querySelector( 'pre code' ); }, callback: function() { hljs.initHighlightingOnLoad(); } },
+ { src: '/reveal.js/plugin/zoom-js/zoom.js', async: true },
+ { src: '/reveal.js/plugin/notes/notes.js', async: true },
+ { src: '/reveal.js/plugin/line-numbers/line-numbers.js' }
+ ]
+ });
+ /* This draws the graph on the slide on a slidechanged event */
+ Reveal.addEventListener('slidechanged', function(event) {
+ var callback = "render_"+event.currentSlide.id;
+ if(typeof(window[callback])=="function") {
+ window[callback]();
+ }
+ } );
+ /* This draws the graph if we got here directly without coming from another slide */
+ Reveal.addEventListener('ready', function(event) {
+ var callback = "render_"+event.currentSlide.id;
+ if(typeof(window[callback])=="function") {
+ window[callback]();
+ }
+ } );
+ </script>
+
+ </body>
+</html>
diff --git a/shift.xml b/shift.xml
new file mode 100644
index 0000000..50c837a
--- /dev/null
+++ b/shift.xml
@@ -0,0 +1,48 @@
+<presentation
+ template="simple"
+ navmode="html"
+ titlecolor="#000000"
+ navbarbackground="#bbbbbb"
+ navbartopiclinks="0"
+ logo1="images/php-med-trans.png"
+ titlesize="6em"
+ navbarheight="3.5em"
+ examplebackground="#ffffff"
+ outputbackground="#ffffff"
+ exampleclass="noshadow"
+ exampleoutputclass="noshadow"
+>
+
+<topic>PHP</topic>
+<title>PHP in 2018</title>
+<event>Shift Dev Conf</event>
+<location>Split</location>
+<date>June 1, 2018</date>
+<speaker>Rasmus Lerdorf</speaker>
+<url>http://talks.php.net/shift</url>
+<twitter>@rasmus</twitter>
+
+<slide>slides/intro/titlepage.xml</slide>
+
+<slide>slides/intro/80s.xml</slide>
+<slide>slides/intro/90s.xml</slide>
+<slide>slides/intro/nold.xml</slide>
+<slide>slides/intro/nold2.xml</slide>
+<slide>slides/intro/nold3.xml</slide>
+
+<slide>slides/intro/php7_speed.xml</slide>
+<slide>slides/intro/php7_perf_s.xml</slide>
+
+<slide>slides/intro/wp2017may.xml</slide>
+<slide>slides/intro/smemwp2017.xml</slide>
+<slide>slides/intro/php7prod.xml</slide>
+<slide>slides/intro/web_impact.xml</slide>
+
+<slide>slides/intro/php72_2018.xml</slide>
+<slide>slides/intro/dce.xml</slide>
+
+<slide>slides/intro/phan_2018.xml</slide>
+
+<slide>slides/intro/thank_you.xml</slide>
+
+</presentation>