PHP simple method to implement DES encryption and decryption

The example in this article describes how to simply implement DES encryption and decryption in PHP. Share it with everyone for your reference, the details are as follows:

des encryption:

function des_encrypt($str, $key) {
  $block = mcrypt_get_block_size('des', 'ecb');
  $pad = $block - (strlen($str) % $block);
  $str .= str_repeat(chr($pad), $pad);
  return mcrypt_encrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_ECB);
}

des decryption:

function des_decrypt($str, $key) {
  $str = mcrypt_decrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_ECB);
  $len = strlen($str);
  $block = mcrypt_get_block_size('des', 'ecb');
  $pad = ord($str[$len - 1]);
  return substr($str, 0, $len - $pad);
}

I hope this article will be helpful to everyone in PHP programming.

For more articles on how to simply implement DES encryption and decryption in PHP, please pay attention to the PHP Chinese website!