(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_module_is_block_algorithm — This function checks whether the specified algorithm is a block algorithm
This function has been DEPRECATED as of PHP 7.1.0 and REMOVED as of PHP 7.2.0. Relying on this function is highly discouraged.
This function returns true
if the specified algorithm is a block
algorithm, or false
if it is a stream one.
algorithm
The algorithm to check.
lib_dir
The optional lib_dir
parameter can contain the
location where the algorithm module is on the system.