com presentations: Story time: phpkonf.html phpkonf.xml slides/intro/storytime.xml
[email protected] (Rasmus Lerdorf) Sat, 13 May 2017 16:37:38 +0000
| Newsgroups | php.pres |
|---|---|
| Message-ID | <[email protected]> |
Commit: 3b4eeec5dd2da787b7aa98ef6ce6f57954567079 Author: Rasmus Lerdorf <[email protected]> Sat, 13 May 2017 18:37:38 +0200 Parents: bac5b41e6a9878a173cbed84da36c8e0741d8c8c Branches: master Link: http://git.php.net/?p=presentations.git;a=commitdiff;h=3b4eeec5dd2da787b7aa98ef6ce6f57954567079 Log: Story time Changed paths: A phpkonf.html A phpkonf.xml A slides/intro/storytime.xml
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+<!doctype html>
+<html lang="en">
+
+ <head>
+ <meta charset="utf-8">
+
+ <title>PHP 7 in 2017</title>
+
+ <meta name="description" content="PHP 7 in 2017">
+ <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;
+ }
+ /* 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 7 in 2017</h1>
+ <h3>PHPKonf</h3>
+ <h3>Istanbul</h3>
+ <h3> May 20, 2017</h3>
+ <a href="http://talks.php.net/phpkonf">http://talks.php.net/phpkonf</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/vic20.jpg" align="center" width="" height="">
+ </section>
+<section id="hist_80s_1">
+ <img src="/presentations/slides/intro/hayes.jpg" align="center" width="" height="">
+ </section>
+<section id="hist_80s_2">
+ <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="storytime">
+ <p class="p" style="font-size:2.5em;text-align:center;">Tangential Story Time</p>
+ <ul>
+ <li style="font-size: 1em;">1995 computers were slow!</li>
+ <li style="font-size: 1em;">32M of memory was a lot! (typical home PC had 8)</li>
+ <li style="font-size: 1em;">100 Mbps ethernet didn't exist yet</li>
+ <li style="font-size: 1em;">The data volume wasn't necessarily smaller</li>
+ </ul>
+ </section>
+<section id="select_star">
+ <pre><code class="sql" data-trim style="font-size:3em;" >SELECT * FROM logins</code></pre>
+ <ul>
+ <li style="font-size: 1.5em;">1 second per MB transferred</li>
+ <li style="font-size: 1.5em;">Ate up server memory quickly</li>
+ <li style="font-size: 1.5em;">Rarely needed them all</li>
+ </ul>
+ </section>
+<section id="msql_changelog">
+ <pre><code class="nohighlight" data-trim style="font-size:1em;" >mSQL 1.0 Patch 9 20 - Oct - 1995
+---------------------------------------
+
+ o Fixed close of stdin in keyFD handling (new key code)
+ o Fixed memory leak in the client library
+ o Fixed force close of UNIX socket when over-ridden by the
+ environment variable
+ o Fixed a couple of core dumps introduced by the new key code
+ o Replace sorting code with a new algorithm (mmap only)
+ o Fixed bug in msqlUpdate() that reported a duplicate key error
+ if you updated the key field to the same value.
+ o Merged in the LIMIT patch from Rasmus Lerdorf <[email protected]>
+ o Fixed locale problem with LANG make variable
+ o Inlined a few calls to bcopy and bcmp for performance
+ o Removed libmisc.a All misc finctions are now in libmsql.a
+ o Fixed problem with field definition info (eg IS_PRI_KEY) being
+ destroyed after a join.
+ o Added a msql_tmpnam() function to get around the NeXT's
+ problem with it's own tmpnam().</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;">$4B savings</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">15B KWH Savings</li>
+ <li style="font-size: 1.5em;margin-left: -1em;">7.5B kg less CO2</li>
+ </ul>
+ </section>
+<section id="impact6">
+ <h1 style="text-align:center;">Do your part</h1>
+ <h1 style="text-align:center;">Upgrade to PHP 7!</h1>
+ </section> </section>
+ <section>
+ <section id="php7">
+ <img src="/presentations/slides/intro/php7trans-200.png" width="" height="">
+ <p class="p" style="font-size:1.1em;text-align:left;">engine improvements</p>
+ <ul>
+ <li style="font-size: 1em;">100%+ performance gain on most real-world applications</li>
+ <li style="font-size: 1em;">Lower memory usage, sometimes drastically lower</li>
+ </ul>
+ </section>
+<section id="php7excep">
+ <p class="p" style="font-size:1.1em;text-align:left;">Exceptions on Fatals</p>
+ <pre><code data-trim style="font-size:1.1em;" >function call_method($obj) {
+ $obj->method();
+}
+call_method(null);</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:0.85em;" >Fatal error: Uncaught Error: Call to a member function method() on null in file:2
+Stack trace:
+#0 file(4): call_method(NULL)
+#1 {main}
+ thrown in file on line 2</code></pre>
+ <pre><code data-trim style="font-size:1.1em;" >try {
+ call_method(null);
+} catch (Error $e) {
+ echo "Caught Exception: {$e->getMessage()}\n";
+}</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:0.85em;" >Caught Exception: Call to a member function method() on null</code></pre>
+ </section>
+<section id="php7hier">
+ <p class="p" style="font-size:2em;text-align:center;">PHP 7 Exception Hierarchy</p>
+<br/>
+ <ul>
+ <li style="font-size: 1.5em;list-style-type: none;"><font color="ab5c5c">Throwable</font></li>
+ <li style="font-size: 1.25em;margin-left: 2em;list-style-type: none;">➥ <font color="ab5c5c">Exception</font> implements Throwable</li>
+ <li style="font-size: 1.25em;margin-left: 2em;list-style-type: none;">➥ <font color="ab5c5c">Error</font> implements Throwable</li>
+ <li style="font-size: 1em;margin-left: 4em;list-style-type: none;">➥ <font color="ab5c5c">TypeError</font> extends Error</li>
+ <li style="font-size: 1em;margin-left: 4em;list-style-type: none;">➥ <font color="ab5c5c">ParseError</font> extends Error</li>
+ </ul>
+ </section>
+<section id="php7ret">
+ <p class="p" style="font-size:1.1em;text-align:left;">Return Types</p>
+ <pre><code data-trim style="font-size:1.1em;" >function get_config(): array {
+ return 42;
+}
+get_config();</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:0.9em;" >Fatal error: Uncaught TypeError: Return value of get_config() must be
+of the type array, integer returned in file:2
+Stack trace:
+#0 file(4): get_config()
+#1 {main}
+ thrown in file on line 2</code></pre>
+ </section>
+<section id="php7STH">
+ <p class="p" style="font-size:1.1em;text-align:left;">Coercive Scalar Types</p>
+ <pre><code data-trim style="font-size:1.1em;" >function logmsg(string $msg, int $level, float $severity) {
+ var_dump($msg); // string(1) "1"
+ var_dump($level); // int(2)
+ var_dump($severity); // float(3)
+}
+logmsg(1, "2.5 bananas", 3);</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:0.9em;" >Notice: A non well formed numeric value encountered in file on line 2</code></pre>
+ <p class="p" style="font-size:1.1em;text-align:left;">Strict Scalar Types</p>
+ <pre><code data-trim style="font-size:1.1em;" >declare(strict_types=1);
+...
+logmsg(1, "2.5", 3);</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:0.9em;" >Fatal error: Uncaught TypeError: Argument 1 passed to logmsg() must be of the
+type string, integer given, called in file on line 7 and defined in file:3
+Stack trace:
+#0 file(7): logmsg(1, '2.5', 3)
+#1 {main}
+ thrown in file on line 2</code></pre>
+ </section>
+<section id="php7anon">
+ <p class="p" style="font-size:1.1em;text-align:left;">Anonymous Classes</p>
+ <pre><code data-trim style="font-size:1.2em;" >return new class($controller) implements Page {
+ public function __construct($controller) {
+ /* ... */
+ }
+ /* ... */
+};
+
+class MyObject extends MyStuff {
+ public function getInterface() {
+ return new class implements MyInterface {
+ /* ... */
+ };
+ }
+}</code></pre>
+ </section>
+<section id="php7coalesce">
+ <p class="p" style="font-size:1.1em;text-align:left;">Coalesce Operator</p>
+ <pre><code data-trim style="font-size:1.5em;" >$a = NULL;
+$b = 0;
+$c = 2;
+
+echo $a ?? $b; // 0
+echo $c ?? $b; // 2
+echo $a ?? $b ?? $c; // 0
+echo $a ?? $x ?? $c; // 2</code></pre>
+ </section>
+<section id="Spaceship">
+ <p class="p" style="font-size:1.1em;text-align:left;">Spaceship Operator</p>
+ <img src="/presentations/slides/intro/lego-php-astronaut.png" width="230" height="345">
+ <pre><code data-trim style="font-size:1.1em;" >function cmp_php5($a, $b) {
+ return ($a < $b) ? -1 : (($a >$b) ? 1 : 0);
+}
+
+function cmp_php7($a, $b) {
+ return $a <=> $b;
+}</code></pre>
+ </section>
+<section id="php7cleanups">
+ <p class="p" style="font-size:1.1em;text-align:left;">Removal of many deprecated features<BR/>
+ (Your PHP4 code will break!)</p>
+ <pre><code data-trim >- ext/ereg (use ext/pcre instead)
+- preg_replace() eval modifier (use preg_replace_callback() instead)
+- ext/mysql (use ext/mysqli or ext/pdo_mysql instead)
+- Assignment of new by reference
+- Scoped calls of non-static methods from incompatible $this context
+
+- dl() in php-fpm
+- set_magic_quotes_runtime() and magic_quotes_runtime()
+- set_socket_blocking() (use stream_set_blocking() instead)
+- mcrypt_generic_end() (use mcrypt_generic_deinit() instead)
+- mcrypt_ecb, mcrypt_cbc, mcrypt_cfb and mcrypt_ofb
+ (use mcrypt_encrypt() and mcrypt_decrypt() instead)
+- datefmt_set_timezone_id() and IntlDateFormatter::setTimeZoneID()
+ (use datefmt_set_timezone() or IntlDateFormatter::setTimeZone() instead)
+
+- xsl.security_prefs (use XsltProcessor::setSecurityPrefs() instead)
+- iconv.input_encoding, iconv.output_encoding, iconv.internal_encoding,
+ mbstring.http_input, mbstring.http_output and mbstring.internal_encoding
+ (use php.input_encoding, php.internal_encoding and php.output_encoding instead)
+
+- $is_dst parameter of the mktime() and gmmktime() functions
+- # style comments in ini files (use ; style comments instead)
+- String category names in setlocale() (use LC_* constants instead)
+- Unsafe curl file uploads (use CurlFile instead)
+- PDO::PGSQL_ATTR_DISABLE_NATIVE_PREPARED_STATEMENT driver option
+ (use PDO::ATTR_EMULATE_PREPARES instead)
+- CN_match and SNI_server_name stream context option (use peer_name instead)</code></pre>
+ </section>
+<section id="php7reserved">
+ <p class="p" style="font-size:1.1em;text-align:left;">New reserved words:</p>
+ <ul>
+ <li style="font-size: 1em;list-style-type: none;">bool</li>
+ <li style="font-size: 1em;list-style-type: none;">int</li>
+ <li style="font-size: 1em;list-style-type: none;">float</li>
+ <li style="font-size: 1em;list-style-type: none;">string</li>
+ <li style="font-size: 1em;list-style-type: none;">null</li>
+ <li style="font-size: 1em;list-style-type: none;">false</li>
+ <li style="font-size: 1em;list-style-type: none;">true</li>
+ <li style="font-size: 1em;list-style-type: none;">resource</li>
+ <li style="font-size: 1em;list-style-type: none;">object</li>
+ <li style="font-size: 1em;list-style-type: none;">mixed</li>
+ <li style="font-size: 1em;list-style-type: none;">numeric</li>
+ </ul>
+ </section>
+<section id="php7num">
+ <p class="p" style="font-size:1.1em;text-align:left;">64-bit integer support on Windows</p>
+ <p class="p" style="font-size:1.1em;text-align:left;">Cleanup edge-case integer overflow/underflow</p>
+ <p class="p" style="font-size:1.1em;text-align:left;">Support for strings with length >= 2^31 bytes in 64 bit builds.</p>
+ <p class="p" style="font-size:1.1em;text-align:left;">Parse error on invalid numeric literals</p>
+ <pre><code data-trim >$mask = 0855; // Parse error: Invalid numeric literal</code></pre>
+ </section>
+<section id="php7UVS">
+ <p class="p" style="font-size:1.1em;text-align:left;">Uniform variable syntax</p>
+ <pre><code data-trim >// left-to-right
+$this->$belongs_to['column']
+// vs.
+$this->{$belongs_to['column']}
+
+// support missing combinations of operations
+$foo()['bar']()
+[$obj1, $obj2][0]->prop
+getStr(){0}
+
+// support nested ::
+$foo['bar']::$baz
+$foo::$bar::$baz
+$foo->bar()::baz()
+
+// support nested ()
+foo()()
+$foo->bar()()
+Foo::bar()()
+$foo()()
+
+// support operations on arbitrary (...) expressions
+(...)['foo']
+(...)->foo
+(...)->foo()
+(...)::$foo
+(...)::foo()
+(...)()
+
+// two more practical examples for the last point
+(function() { ... })()
+($obj->closure)()
+
+// support all operations on dereferencable scalars
+// (not very useful)
+"string"->toLower()
+[$obj, 'method']()
+'Foo'::$bar</code></pre>
+ </section>
+<section id="php7unicode">
+ <p class="p" style="font-size:1.1em;text-align:left;">Unicode Codepoint Escape Syntax</p>
+ <pre><code data-trim style="font-size:1.2em;" >echo "\u{202E}Right-to-left text";
+
+echo " \u{26BD}";</code></pre>
+ <pre class="output" style="font-size:1.2em;">Right-to-left text ⚽ </pre> <p class="p" style="font-size:1.1em;text-align:left;">ICU IntlChar class added to intl extension</p>
+ </section>
+<section id="php7csprng">
+ <p class="p" style="font-size:1.1em;text-align:left;">CSPRNG</p>
+ <pre><code data-trim style="font-size:1.2em;" >$int = random_int(-500, 500);
+$bytes = random_bytes(10);
+
+var_dump( $int );
+var_dump( bin2hex($bytes) );</code></pre>
+ <pre class="output" style="font-size:1.2em;">int(98)
+string(20) "1fe3d208d5e341b0acce"
+ </pre> </section> </section>
+ <section>
+ <section id="php71">
+ <h1 style="text-align:center;">PHP 7.1</h1>
+ </section>
+<section id="php71_void">
+ <p class="p" style="font-size:1.1em;text-align:left;">void return type</p>
+ <pre><code data-trim style="font-size:1.1em;" >function should_return_nothing(): void {
+ return 1; // Fatal error: A void function must not return a value
+}</code></pre>
+ </section>
+<section id="php71_nullable">
+ <p class="p" style="font-size:1.1em;text-align:left;">Nullable types</p>
+ <pre><code data-trim style="font-size:1.1em;" >function answer(int $a, ?int $b): ?int {
+ if($a > $b) return $a;
+ else return null;
+}</code></pre>
+ </section>
+<section id="php71iterable">
+ <p class="p" style="font-size:1.1em;text-align:left;">Iterable pseudo-type</p>
+ <pre><code data-trim style="font-size:1.1em;" >function foo(iterable $iterable) {
+ foreach ($iterable as $value) {
+ // ...
+ }
+}
+function bar(): iterable {
+ return [1, 2, 3];
+}</code></pre>
+ </section>
+<section id="php71neg">
+ <p class="p" style="font-size:1.1em;text-align:left;">Negative string offsets</p>
+ <pre><code data-trim style="font-size:1.1em;" >$str='abcdef';
+var_dump($str[-2]); // => string(1) "e"</code></pre>
+ </section>
+<section id="php71list">
+ <p class="p" style="font-size:1.1em;text-align:left;">List keys</p>
+ <pre><code data-trim style="font-size:1.1em;" >list($first, $second, $third) = [1, 2, 3];
+[$first, $second, $third] = [1, 2, 3];</code></pre>
+ </section>
+<section id="php71arith">
+ <p class="p" style="font-size:1.1em;text-align:left;">Warn about invalid strings in arithmetic</p>
+ <pre><code data-trim style="font-size:1.1em;" >$numberOfApples = "10 apples" + "5 pears";</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:0.9em;" >Notice: A non well formed numeric string encountered in example.php on line 2
+Notice: A non well formed numeric string encountered in example.php on line 2</code></pre>
+ </section>
+<section id="php71classconst">
+ <p class="p" style="font-size:1.1em;text-align:left;">Class constant visibility</p>
+ <pre><code data-trim style="font-size:1.2em;" >class Token {
+ // Constants default to public
+ const PUBLIC_CONST = 0;
+
+ private const PRIVATE_CONST = 0;
+ protected const PROTECTED_CONST = 0;
+ public const PUBLIC_CONST_TWO = 0;</code></pre>
+ </section>
+<section id="php71cleanups">
+ <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;">new 'void' and 'iterable' keywords</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">rand() and srand() are now aliased to mt_rand() and mt_srand()</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">Mersenne Twister algorithm has been tweaked</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">Calling a function with too few args is now an Error instead of a Warning</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">Dropped support for sslv2 streams</li>
+ <li style="font-size: 0.8em;margin-left: -1em;">Dropped support for mcrypt</li>
+ </ul>
+ </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/etsy/phan" target="">github.com/etsy/phan</a></div>
+ </section>
+<section id="phan1">
+ <p class="p" style="font-size:1.5em;text-align:left;">It can catch dumb mistakes</p>
+ <pre><code class="line-numbers" data-trim style="font-size:1em;" data-highlight-lines='2'>$a = [1,2,3];
+if(count($a > 1)) {
+ echo "Test";
+}</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:.75em;" >% phan test.php
+test.php:2 PhanTypeComparisonFromArray array to int comparison</code></pre>
+ </section>
+<section id="phan2">
+ <p class="p" style="font-size:1.5em;text-align:left;">Check phpdoc comments</p>
+ <pre><code class="line-numbers" data-trim style="font-size:.75em;" data-highlight-lines='10,11'>class C {
+ /** @var int $prop */
+ public $prop;
+
+ /**
+ * @param string $arg
+ * @return int
+ */
+ function test($arg) {
+ $this->prop = $arg;
+ return $arg;
+ }
+}</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:.75em;" >% phan test.php
+test.php:10 PhanTypeMismatchProperty Assigning string to property but \C::prop is int
+test.php:11 PhanTypeMismatchReturn Returning type string but test() is declared to return int</code></pre>
+ </section>
+<section id="phan3">
+ <p class="p" style="font-size:1.5em;text-align:left;">Help with refactoring</p>
+ <pre><code class="line-numbers" data-trim style="font-size:1em;" data-highlight-lines='8'>class C {
+ /**
+ * @deprecated
+ */
+ static function legacy_function() { }
+}
+
+C::legacy_function();</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:.65em;" >% phan test.php
+test.php:8 PhanDeprecatedFunction Call to deprecated function \C::legacy_function() defined at test.php:5</code></pre>
+ </section>
+<section id="phan4">
+ <p class="p" style="font-size:1.5em;text-align:left;">Install with composer</p>
+ <pre><code class="shell nohighlight" data-trim style="font-size:1em;" >$ composer require --dev etsy/phan</code></pre>
+ <p class="p" style="font-size:1.5em;text-align:left;">Create .phan/config.php</p>
+ <pre><code data-trim style="font-size:1em;" ><?php
+use \Phan\Issue;
+return [
+ 'should_visit_all_nodes' => true,
+ 'minimum_severity' => Issue::SEVERITY_LOW,
+ 'directory_list' => [ 'src', 'vendor' ],
+ 'exclude_analysis_directory_list' => [ 'vendor' ]
+];</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:1em;" >$ ./vendor/bin/phan</code></pre>
+ </section> </section>
+ <section>
+ <section id="phan_ts">
+ <p class="p" style="font-size:2em;text-align:center;">Type Safety</p>
+ <p class="p" style="font-size:1.5em;text-align:left;">Legacy code</p>
+ <pre><code data-trim style="font-size:1em;" >class Data {
+ function __construct($data) {
+ $this->haystack = $data;
+ }
+ function find($needle) {
+ return in_array($needle, $this->haystack, true);
+ }
+}
+$storage = new Data(['apple','orange','banana']);
+
+$fruit = false;
+$storage->find($fruit);</code></pre>
+ </section>
+<section id="phan_ts2">
+ <p class="p" style="font-size:1em;text-align:left;">Going straight to strict types risks runtime fatals</p>
+ <pre><code class="line-numbers" data-trim style="font-size:1em;" data-highlight-lines='6,13'><?php declare(strict_types=1);
+class Data {
+ function __construct(array $data) {
+ $this->haystack = $data;
+ }
+ function find(string $needle):bool {
+ return in_array($needle, $this->haystack, true);
+ }
+}
+$storage = new Data(['apple','orange','banana']);
+
+$fruit = false;
+$storage->find($fruit);</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:.65em;" >Fatal error: Uncaught TypeError: Argument 1 passed to Data::find() must be of the type string, boolean given,
+ called in test.php on line 13 and defined in test.php:6
+Stack trace:
+#0 test.php(13): Data->find(false)
+#1 {main}
+thrown in test.php on line 6</code></pre>
+ </section>
+<section id="phan_ts3">
+ <p class="p" style="font-size:1em;text-align:left;">Intermediate step</p>
+ <pre><code class="line-numbers" data-trim style="font-size:.75em;" data-highlight-lines='15,22'>class Data {
+ /** @var array $haystack */
+ public $haystack;
+
+ /**
+ * @param array $data
+ */
+ function __construct($data) {
+ $this->haystack = $data;
+ }
+ /**
+ * @param string $needle
+ * @return bool
+ */
+ function find($needle) {
+ return in_array($needle, $this->haystack, true);
+ }
+}
+$storage = new Data(['apple','orange','banana']);
+
+$fruit = false;
+$storage->find($fruit);</code></pre>
+ <pre><code class="shell nohighlight" data-trim style="font-size:.65em;" >$ phan test.php
+test.php:22 PhanTypeMismatchArgument Argument 1 (needle) is bool but \Data::find() takes string defined at test.php:15</code></pre>
+ </section> </section>
+ <section>
+ <section id="thank_you">
+ <h2 style="text-align:center;">Thank You</h2>
+ <div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/rlerdorf/phan" target="">https://github.com/rlerdorf/phan</a></div>
+ <div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://bugs.php.net" target="">https://bugs.php.net</a></div>
+ <div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href=":-:url:-:" target="">http://talks.php.net/phpkonf</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/phpkonf.xml b/phpkonf.xml
new file mode 100644
index 0000000..d025528
--- /dev/null
+++ b/phpkonf.xml
@@ -0,0 +1,49 @@
+<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 7 in 2017</title>
+<event>PHPKonf</event>
+<location>Istanbul</location>
+<date> May 20, 2017</date>
+<speaker>Rasmus Lerdorf</speaker>
+<url>http://talks.php.net/phpkonf</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/storytime.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/php7_2017.xml</slide>
+<slide>slides/intro/php71_2017.xml</slide>
+<slide>slides/intro/phan_2017.xml</slide>
+<slide>slides/intro/phan_ts.xml</slide>
+
+<slide>slides/intro/thank_you.xml</slide>
+
+</presentation>
diff --git a/slides/intro/storytime.xml b/slides/intro/storytime.xml
new file mode 100644
index 0000000..45233fa
--- /dev/null
+++ b/slides/intro/storytime.xml
@@ -0,0 +1,44 @@
+<slide title="" section="storytime">
+
+<blurb fontsize="2.5em" align="center">Tangential Story Time</blurb>
+<list>
+<bullet fontsize="1em" >1995 computers were slow!</bullet>
+<bullet fontsize="1em" >32M of memory was a lot! (typical home PC had 8)</bullet>
+<bullet fontsize="1em" >100 Mbps ethernet didn't exist yet</bullet>
+<bullet fontsize="1em" >The data volume wasn't necessarily smaller</bullet>
+</list>
+
+<break lines="1" section="select_star"/>
+<example fontsize="3em" result='0' title="" type="sql"><![CDATA[
+SELECT * FROM logins
+]]></example>
+<list>
+<bullet fontsize="1.5em" >1 second per MB transferred</bullet>
+<bullet fontsize="1.5em" >Ate up server memory quickly</bullet>
+<bullet fontsize="1.5em" >Rarely needed them all</bullet>
+</list>
+
+<break lines="1" section="msql_changelog"/>
+<example fontsize="1em" result='0' title="" type="nohighlight"><![CDATA[
+mSQL 1.0 Patch 9 20 - Oct - 1995
+---------------------------------------
+
+ o Fixed close of stdin in keyFD handling (new key code)
+ o Fixed memory leak in the client library
+ o Fixed force close of UNIX socket when over-ridden by the
+ environment variable
+ o Fixed a couple of core dumps introduced by the new key code
+ o Replace sorting code with a new algorithm (mmap only)
+ o Fixed bug in msqlUpdate() that reported a duplicate key error
+ if you updated the key field to the same value.
+ o Merged in the LIMIT patch from Rasmus Lerdorf <[email protected]>
+ o Fixed locale problem with LANG make variable
+ o Inlined a few calls to bcopy and bcmp for performance
+ o Removed libmisc.a All misc finctions are now in libmsql.a
+ o Fixed problem with field definition info (eg IS_PRI_KEY) being
+ destroyed after a join.
+ o Added a msql_tmpnam() function to get around the NeXT's
+ problem with it's own tmpnam().
+]]></example>
+
+</slide>