(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)

mcrypt_enc_is_block_modeChecks whether the opened mode outputs blocks


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.


mcrypt_enc_is_block_mode(resource $td): bool

Tells whether the opened mode outputs blocks (e.g. true for cbc and ecb, and false for cfb and stream).



The encryption descriptor.

Return Values

Returns true if the mode outputs blocks of bytes, or false if it outputs just bytes.

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