Mcrypt Functions
PHP Manual

mcrypt_module_self_test

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_module_self_test — This function runs a self test on the specified module

Description

bool mcrypt_module_self_test ( string $algorithm [, string $lib_dir ] )

This function runs the self test on the algorithm specified.

Parameters

algorithm

One of the MCRYPT_ciphername constants, or the name of the algorithm as string.

lib_dir

The optional lib_dir parameter can contain the location where the algorithm module is on the system.

Return Values

The function returns TRUE if the self test succeeds, or FALSE when it fails.

Examples

Example #1 mcrypt_module_self_test() example

<?php
var_dump(mcrypt_module_self_test(MCRYPT_RIJNDAEL_128)) . "\n";
var_dump(mcrypt_module_self_test(MCRYPT_BOGUS_CYPHER));
?>

The above example will output:

bool(true)
bool(false)

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