Returns if the specified mode outputs blocks or not (original) (raw)

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

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).