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This article mainly explains "reversible encryption and decryption function example usage in PHP". The explanation content in this article is simple and clear, easy to learn and understand. Please follow the idea of Xiaobian and go deep into it slowly to study and learn "reversible encryption and decryption function example usage in PHP" together!

Function source code

The copy code is as follows:

function encrypt($data, $key) {

$prep_code = serialize($data);

$block = mcrypt_get_block_size('des', 'ecb');

if (($pad = $block - (strlen($prep_code) % $block))

< $block) { $prep_code .= str_repeat(chr($pad), $pad); } $encrypt = mcrypt_encrypt(MCRYPT_DES, $key, $prep_code, MCRYPT_MODE_ECB); return base64_encode($encrypt); } function decrypt($str, $key) { $str = base64_decode($str); $str = mcrypt_decrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_ECB); $block = mcrypt_get_block_size('des', 'ecb'); $pad = ord($str[($len = strlen($str)) - 1]); if ($pad && $pad < $block && preg_match('/' . chr($pad) . '{' . $pad . '}$/', $str)) { $str = substr($str, 0, strlen($str) - $pad); } return unserialize($str); } 调用函数 复制代码 代码如下: $key = 'okyo.cn'; $data = array('id' =>

100, 'username' => 'customer', 'password' => 'e10adc3949ba59abbe56e057f20f883e');

$snarr = serialize($data);

$en = encrypt($data, $key);

$de = decrypt($en, $key);

echo "Encryption Prototype: ";

print_r($data);

echo "

Key: $key

Encryption result: $en

Decryption result: ";

print_r($de);

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