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<?php $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); var_dump(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, 'abcd', '1234567890', MCRYPT_MODE_ECB, $iv));

preferences:
44.07 ms | 402 KiB | 5 Q