Overview
KB
Technical FAQ
PHP Manual
CSS2 Manual
HTML Manual
JS Guide
JS Reference
PhpDock Manual
Nu-Coder Manual
PhpExpress Manual
PHP Joomla
Development
Learn PHP
 
<Backward incompatible changesChanged functions>
^Migrating from PHP 7.0.x to PHP 7.1.xLast updated: Mon, 26 Oct 2026

Deprecated features in PHP 7.1.x

ext/mcrypt

The mcrypt extension has been abandonware for nearly a decade now, and was also fairly complex to use. It has therefore been deprecated in favour of OpenSSL, where it will be removed from the core and into PECL in PHP 7.2.

Eval option for mb_ereg_replace() and mb_eregi_replace()

The e pattern modifier has been deprecated for the mb_ereg_replace() and mb_eregi_replace() functions.


<Backward incompatible changesChanged functions>
^Migrating from PHP 7.0.x to PHP 7.1.xLast updated: Mon, 26 Oct 2026