(PHP 4 >= 4.0.2, PHP 5, PHP 7)
Returns if the specified mode outputs blocks or not
bool mcrypt_module_is_block_mode ( string $mode [, string $lib_dir ] )
This function returns TRUE
if the mode outputs blocks of bytes or FALSE
if it outputs just bytes. (e.g. TRUE
for cbc and ecb, and FALSE
for cfb and stream).
Parameters:
mode
One of the MCRYPT_MODE_modename
constants, or one of the following strings: "ecb", "cbc", "cfb", "ofb", "nofb" or "stream".
lib_dir
The optional lib_dir
parameter can contain the location where the algorithm module is on the system.
Returns:
This function returns TRUE
if the mode outputs blocks of bytes or FALSE
if it outputs just bytes. (e.g. TRUE
for cbc and ecb, and FALSE
for cfb and stream).
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