mcrypt_enc_get_key_size

(PHP 4 >= 4.0.2, PHP 5, PHP 7)

mcrypt_enc_get_key_size — Returns the maximum supported keysize of the opened mode

Warning

This function has been DEPRECATED as of PHP 7.1.0. Relying on this function is highly discouraged.

int mcrypt_enc_get_key_size ( resource $td )

Gets the maximum supported key size of the algorithm in bytes.

Returns the maximum supported key size of the algorithm in bytes.