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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

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

This function runs the self test on the algorithm specified.

algorithm -

The algorithm to test.

lib_dir -

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

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

var_dump(mcrypt_module_self_test(MCRYPT_RIJNDAEL_128)) . "\n";
var_dump(mcrypt_module_self_test(MCRYPT_BOGUS_CYPHER));

Результат выполнения данного примера:

bool(true)
bool(false)