mcrypt_enc_get_block_size Returns the blocksize of the opened algorithm &warn.deprecated.function-7-1-0.removed-7-2-0; &reftitle.description; intmcrypt_enc_get_block_size resourcetd Gets the blocksize of the opened algorithm. &reftitle.parameters; td The encryption descriptor. &reftitle.returnvalues; Returns the block size of the specified algorithm in bytes.