Php/docs/function.mcrypt-module-is-block-algorithm-mode
From Get docs
mcrypt_module_is_block_algorithm_mode
(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
Warning 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.
Description
mcrypt_module_is_block_algorithm_mode
( string $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).
Parameters
mode- The mode to check.
lib_dir- The optional
lib_dirparameter can contain the location where the algorithm module is on the system.
Return Values
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).
