   #PHP Manual Mcrypt Encryption Functions
   mcrypt_module_is_block_algorithm_mode mcrypt_module_is_block_mode

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                       mcrypt_module_is_block_algorithm

   (PHP 4 >= 4.0.2)
   mcrypt_module_is_block_algorithm -- This function checks whether the
   specified algorithm is a block algorithm

Description

   bool mcrypt_module_is_block_algorithm ( string algorithm [, string
   lib_dir])

   This function returns TRUE if the specified algorithm is a block
   algorithm, or FALSE is it is a stream algorithm. The optional lib_dir
   parameter can contain the location where the algorithm module is on
   the system.
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