(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 and REMOVED as of PHP 7.2.0. Relying on this function is highly discouraged.
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).
mode
The mode to check.
lib_dir
The optional lib_dir
parameter can contain the
location where the algorithm module is on the system.