Example usage of reversible encryption and decryption function in PHP

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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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