mcrypt_module_self_test

PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0
mcrypt_module_self_test - This function runs a self test on the specified module
Manual
Code Examples

Example #1 mcrypt_module_self_test example

Result: bool(true) bool(false)
<?php
var_dump(mcrypt_module_self_test(MCRYPT_RIJNDAEL_128)) . "\n";
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