(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_module_is_block_algorithm_mode — Returns if the specified module is a block algorithm or not
This function has been DEPRECATED as of PHP 7.1.0. Relying on this function is highly discouraged.
$mode
[, string $lib_dir
] ) : bool
This function returns TRUE if the mode is for use with block
algorithms, otherwise it returns FALSE. (e.g. FALSE for stream, and
TRUE for cbc, cfb, ofb).
modeThe mode to check.
lib_dir
The optional lib_dir parameter can contain the
location where the algorithm module is on the system.
This function returns TRUE if the mode is for use with block
algorithms, otherwise it returns FALSE. (e.g. FALSE for stream, and
TRUE for cbc, cfb, ofb).