   #PHP Manual Mcrypt Encryption Functions mcrypt_module_open mcrypt_ofb

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                            mcrypt_module_self_test

   (PHP 4 >= 4.0.2)
   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. The
   optional lib_dir parameter can contain the location of where the
   algorithm module is on the system.

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

   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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