This extension rely in libmcrypt which is dead, unmaintained since 2007.
Please don't rely on it, consider switching to well maintained alternatives (openssl, crypt, password hashing functions, phpseclib, password_compat...)
Introduction
Warning
This extension has been deprecated as of PHP 7.1.0 and moved to PECL as of PHP 7.2.0.
This is an interface to the mcrypt library, which supports a wide variety of block algorithms such as DES, TripleDES, Blowfish (default), 3-WAY, SAFER-SK64, SAFER-SK128, TWOFISH, TEA, RC2 and GOST in CBC, OFB, CFB and ECB cipher modes. Additionally, it supports RC6 and IDEA which are considered "non-free". CFB/OFB are 8bit by default.
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User Contributed Notes 2 notes
remi at php dot net ¶
2 years ago
c dot light93 at gmail dot com ¶
3 years ago
if you get a "The mcrypt extension is missing" alert somewhere, use
"sudo php5enmod mcrypt" and restart your server to enable it.
