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Practical PHP7 Leszek Krupiński PHPCon 2015

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@leafnode

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http://phpers.pl/

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About

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What’s now

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PHP 5.3

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PHP 5.4

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PHP 5.5

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http://w3techs.com/technologies/details/pl-php/all/all

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http://w3techs.com/technologies/details/pl-php/5/all

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http://php.net/supported-versions.php

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PHP7!

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PHP6?

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PHP RFC: Name of Next Release of PHP https://wiki.php.net/rfc/php6

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PHP7

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Backward Compatibility Breaks

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PHP RFC: Remove alternative PHP tags https://wiki.php.net/rfc/remove_alternative_php_tags

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The following syntactical elements are removed: • <% opening tag • <%= opening tag with echo • %> closing tag • ()i opening tag • ()i closing tag

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PHP RFC: Removal of dead or not yet PHP7 ported SAPIs and extensions https://wiki.php.net/rfc/removal_of_dead_sapis_and_exts

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• sapi/aolserver • sapi/apache • sapi/apache_hooks • sapi/apache2filter • sapi/caudium • sapi/continuity • sapi/isapi • sapi/phttpd • sapi/pi3web • sapi/roxen • sapi/thttpd • sapi/tux • sapi/webjames • ext/mssql • ext/sybase_ct

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PHP RFC: Remove deprecated functionality in PHP 7 https://wiki.php.net/rfc/remove_deprecated_functionality_in_php7

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• ext/ereg • ext/mysql

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Use PCRE

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Use mysqli/PDO

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The following language features are deprecated: • Assignment of new by reference (since PHP 5.3; use normal assignment instead) REMOVED • Scoped calls of non-static methods from incompatible $this context (since PHP 5.6) REMOVED The following functions are deprecated: • dl on fpm-fcgi (since PHP 5.3) REMOVED • set_magic_quotes_runtime and magic_quotes_runtime (since PHP 5.4) REMOVED • set_socket_blocking (since PHP 5.4; use stream_set_blocking instead) REMOVED • mcrypt_generic_end (since PHP 5.4; use mcrypt_generic_deinit instead) REMOVED • mcrypt_ecb, mcrypt_cbc, mcrypt_cfb and mcrypt_ofb (since PHP 5.5, but documented as deprecated earlier; use mcrypt_encrypt and mcrypt_decrypt instead) REMOVED • datefmt_set_timezone_id and IntlDateFormatter::setTimeZoneID (since PHP 5.5; use datefmt_set_timezone or IntlDateFormatter::setTimeZone instead) REMOVED The following ini options are deprecated: • xsl.security_prefs (since PHP 5.4; use XsltProcessor::setSecurityPrefs instead) REMOVED The following miscellaneous functionality is deprecated: • The $is_dst parameter of the mktime() and gmmktime() functions (since PHP 5.1) REMOVED • # style comments in ini files (since PHP 5.3; use ; style comments instead) REMOVED • String category names in setlocale() (since PHP 5.3; use LC_* constants instead) REMOVED • Unsafe curl file uploads (since PHP 5.5; use CurlFile instead) REMOVED • preg_replace() eval modifier (since PHP 5.5; use preg_replace_callback instead) REMOVED • PDO::PGSQL_ATTR_DISABLE_NATIVE_PREPARED_STAT EMENT driver option (since PHP 5.6; use PDO::ATTR_EMULATE_PREPARES instead) REMOVED • CN_match and SNI_server_name stream context option (since PHP 5.6; use peer_name instead) REMOVED

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PHP RFC: Remove PHP 4 Constructors https://wiki.php.net/rfc/remove_php4_constructors

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PHP RFC: Make defining multiple default cases in a switch a syntax error https://wiki.php.net/rfc/switch.default.multiple

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PHP RFC: Uniform Variable Syntax https://wiki.php.net/rfc/uniform_variable_syntax

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PHP RFC: Context Sensitive Lexer https://wiki.php.net/rfc/context_sensitive_lexer

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PHP RFC: Reserved Keywords https://wiki.php.net/rfc/ reserve_more_types_in_php_7

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int float bool string true, false null

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int float bool string true, false null

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New stuff

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Lies, damned lies, statistics

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https://www.zend.com/en/resources/php7_infographic

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Type hinting

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PHP RFC: Return Type Declarations https://wiki.php.net/rfc/return_types

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PHP RFC: Scalar Type Declarations https://wiki.php.net/rfc/scalar_type_hints_v5

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…integers are accepted for floating point arguments.

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Use pattern

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Static analysis

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IDE hinting

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Engine / JIT hinting

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Engine Exceptions https://wiki.php.net/rfc/throwable-interface https://wiki.php.net/rfc/engine_exceptions_for_php7

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Throwable Interface

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Null Coalesce Operator https://wiki.php.net/rfc/isset_ternary

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It’s not Elvis

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PHP RFC: Easy User- land CSPRNG https://wiki.php.net/rfc/easy_userland_csprng

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RFC: Anonymous Classes https://wiki.php.net/rfc/anonymous_classes

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Use Patterns

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One-time use

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Test Stubs

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Quick And Dirty Hacks

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Combined Comparison Operator https://wiki.php.net/rfc/combined-comparison-operator

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T_SPACESHIP

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Because T_PAAMAYIM_NEKUDOTAYIM is not enough

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RFC: Unicode Escape Syntax https://wiki.php.net/rfc/unicode_escape

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…and more Closure bind, Generator fixes, Group use declarations, Assertions…

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Future

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Void Return Type https://wiki.php.net/rfc/void_return_type

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Generics https://wiki.php.net/rfc/generics

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Named Parameters https://wiki.php.net/rfc/named_params

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PHP8!

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More! • PHP7 migration guide
 http://php.net/manual/en/migration70.php • PHP7 tutorial
 http://php7-tutorial.com • PHP7 Compatibility Checker
 https://github.com/sstalle/php7cc • PHP7 RFCs
 https://wiki.php.net/rfc#php_70 • PHP7 Vagrant Boxes
 https://github.com/rlerdorf/php7dev • Upgrading to PHP7 free ebook
 http://www.oreilly.com/web-platform/free/upgrading-to-php- seven.csp

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Pytania?

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Dziękuję @leafnode http://speakerdeck.com/leafnode/ https://joind.in/16214