内容：abcd
KEY:1234567890123456
加密后base64：T7UT2NQ1AFvR9unjA0wKWA==

function apiDataDecrypt($data, $key='') { $data = base64_decode($data); $pad = 16 - (strlen($data) % 16); $padData = $data . str_repeat(chr($pad), $pad); return mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key,$padData, MCRYPT_MODE_ECB);} }

直接附上解决方案吧

$key = '1234567890123456';$content = 'T7UT2NQ1AFvR9unjA0wKWA==';$desStr = decryptString($content,$key);echo($desStr);function decryptString($str,$key) { $str = base64_decode($str); $str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_ECB); $block = mcrypt_get_block_size('rijndael_128', 'ecb'); $pad = ord($str[($len = strlen($str)) - 1]); $len = strlen($str); $pad = ord($str[$len-1]); return substr($str, 0, strlen($str) - $pad);}

以上所述就是本文的全部内容了，希望大家能够喜欢。