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Juliette Reinders Folmer @jrf_nl Essential PHP 7

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What Happened to PHP 6 ? • Unicode – ICU • Publications

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How Fast ?!?!?

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How Fast ?!?!?

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How Fast ?!?!?

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What Can You Expect ? New features! Less BC breaks than upgrading to 5.4! PHPNG (PHP Next-Gen) Speed !

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When ? 7.0: December 3, 2015 Current: 7.0.13 7.1: ~November 2016 Currently on RC6

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Version Support Today: November 16 2016

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PHP 5.2 PHP 5.3 PHP 5.4 PHP 5.5 Requirements PHP 5.6

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What has changed ?

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So Long And Thanks For All The Fish MySql & MsSql extensions Ereg Posix Regex PHP 5.5 and lower

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• dl() on fpm-fcgi • set_magic_quotes_runtime() • set_socket_blocking() • mcrypt_generic_end() • mcrypt_ecb() • mcrypt_cnc() • mcrypt_cfb() • datefmt_set_timezone_id • IntlDateFormatter::setTimeZoneID • call_user_method() • call_user_method_array() Removed Functions

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• xsl.security_prefs • Input encoding: – iconv.input_encoding – Iconv.internal_encoding – mbstring.http_input – mbstring.http_output – mbstring.internal_encoding Removed ini Options

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What Will Break ? Alternative PHP tags echo 'script tags'; <% echo 'ASP tags'; %>

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What Will Break ? Numeric Hex strings Alternative PHP tags

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What Will Break ? Multiple default: Division by zero Numeric Hex strings Alternative PHP tags

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What Will Break ? Static vs $this property; } } MyClass::example();

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What Will Break ? preg_replace /e Static vs $this new ... by reference Some Variable Variables

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Uniform Variable Syntax Syntax Old Interpretation New Interpretation $$var[‘key1’][‘key2’] ${$var[‘key1’][‘key2’]} ($$var)[‘key1’][‘key2’] $var->$prop[‘key’] $var->{$prop[‘key’]} ($var->$prop)[‘key’] $var->$prop[‘key’]() $var->{$prop[‘key’]}() ($var->$prop)[‘key’]() Class::$var[‘key’]() Class::{$var[‘key’]}() (Class::$var)[‘key’]()

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What Will Break ? $HTTP_ RAW_ POST_ DATA Invalid octal literals list() vs string access Redefining function args

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What Will Break ? PHP4 construc- tors

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PHP4 Constructors

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PHP4 Constructors

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PHP4 Constructors

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What Will Break ? func_get_ args() PHP4 construc- tors

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What Will Break ? func_get_ args() Reserved words PHP4 construc- tors

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What Will Break ? func_get_ args() Reserved words PHP4 construc- tors Internal array pointer vs foreach()

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Being Forward Compatible can be as Important as Being Backwards Compatible

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Cross-version bootstrap.php version_compare() function_exists() class_exists() method_exists() defined()  class-php53-code.php  class-php70-code.php  class-php-compat.php

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About Shims

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When to Use Shims ? Framework Implement early Load early Feature complete

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In 2020..... (or thereabouts)

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PHP5.3+ on Steriods Bind Closure on Call Group Use Declarations Anonymous Classes Generator Enhancements Assertions

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Goodies! Spaceship Unicode Escapes Strict Typing More Exception Types More Catchable Errors Uniform Variable Syntax Null Coalesce Scalar Type Hints & Return Type Hints

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More Goodies! Session options Preg_ replace_ callback_ array() intdiv() Expectations Closure call() Filtered unserialize() Exceptions on Fatals IntlChar Class

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PHP 7.1 Goodies! List with keys Multi catch iterable type hint Symmetric array destructuring void return type Nullable types Negative string offset support Class constant visibility

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• PHP 7 Compatibility Checker – https://github.com/sstalle/php7cc • PHP Compatibility Code Standard – https://github.com/wimg/PHPCompatibility/ • PHP CompatInfo – http://php5.laurent-laville.org/compatinfo/ Check Your Application

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• Are the PHP Extensions Ready ? – https://github.com/gophp7/gophp7-ext/wiki/extensions- catalog • Need a Dev Box ? – https://github.com/rlerdorf/php7dev • PHP 7 to PHP 5.6 transphiler – https://github.com/jaytaph/Transphpile • PHP Cheatsheets – http://phpcheatsheets.com/ Useful

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Slides will be posted to http://speakerdeck.com/jrf Please give feedback at https://joind.in/talk/aedbe Thank you ! Essential PHP 7