Php/docs/function.mcrypt-module-is-block-mode
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mcrypt_module_is_block_mode
(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_module_is_block_mode — Returns if the specified mode outputs blocks 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_mode
( string $mode
[, string $lib_dir
] ) : bool
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.
Return Values
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).