mcrypt_module_is_block_algorithm_mode

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_module_is_block_algorithm_mode — Returns if the specified module is a block algorithm or not

说明

bool mcrypt_module_is_block_algorithm_mode ( string $mode [, string $lib_dir ] )

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). The optional lib_dir parameter can contain the location where the mode module is on the system.