PHP给源代码加密的几种方法汇总(推荐)


            虽说分享是传统的美德，但我们有时候辛辛苦苦写一些程序只是为了卖点小钱，挣点辛苦费，也防止有些没有道德的人倒卖，所以我们不得不对我们的程序进行加密，以下我们来介绍一下如何通过PHP的自定义函数来加密我们的PHP源代码。

第一个方法





<?php 

 function encode_file_contents($filename) { 

  $type=strtolower(substr(strrchr($filename,'.'),1)); 

  if ('php' == $type && is_file($filename) && is_writable($filename)) { // 如果是PHP文件 并且可写 则进行压缩编码 

   $contents = file_get_contents($filename); // 判断文件是否已经被编码处理 

   $contents = php_strip_whitespace($filename); 

 

   // 去除PHP头部和尾部标识 

   $headerPos = strpos($contents,'<?php'); 

   $footerPos = strrpos($contents,'?>'); 

   $contents = substr($contents, $headerPos + 5, $footerPos - $headerPos); 

   $encode = base64_encode(gzdeflate($contents)); // 开始编码 

   $encode = '<?php'."\n eval(gzinflate(base64_decode("."'".$encode."'".")));\n\n?>"; 

 

   return file_put_contents($filename, $encode); 

  } 

  return false; 

 } 

 

 //调用函数 

 $filename = 'dam.php'; 

 encode_file_contents($filename); 

 echo "OK,加密完成！" 

 ?>



第二个方法





<?php 

 

 function RandAbc($length = "") { // 返回随机字符串 

  $str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; 

  return str_shuffle($str); 

 } 

 

 $filename = 'index.php'; //要加密的文件 

 $T_k1 = RandAbc(); //随机密匙1 

 $T_k2 = RandAbc(); //随机密匙2 

 $vstr = file_get_contents($filename); 

 $v1 = base64_encode($vstr); 

 $c = strtr($v1, $T_k1, $T_k2); //根据密匙替换对应字符。 

 $c = $T_k1.$T_k2.$c; 

 $q1 = "O00O0O"; 

 $q2 = "O0O000"; 

 $q3 = "O0OO00"; 

 $q4 = "OO0O00"; 

 $q5 = "OO0000"; 

 $q6 = "O00OO0"; 

 $s = '$'.$q6.'=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");$'.$q1.'=$'.$q6.'{3}.$'.$q6.'{6}.$'.$q6.'{33}.$'.$q6.'{30};$'.$q3.'=$'.$q6.'{33}.$'.$q6.'{10}.$'.$q6.'{24}.$'.$q6.'{10}.$'.$q6.'{24};$'.$q4.'=$'.$q3.'{0}.$'.$q6.'{18}.$'.$q6.'{3}.$'.$q3.'{0}.$'.$q3.'{1}.$'.$q6.'{24};$'.$q5.'=$'.$q6.'{7}.$'.$q6.'{13};$'.$q1.'.=$'.$q6.'{22}.$'.$q6.'{36}.$'.$q6.'{29}.$'.$q6.'{26}.$'.$q6.'{30}.$'.$q6.'{32}.$'.$q6.'{35}.$'.$q6.'{26}.$'.$q6.'{30};eval($'.$q1.'("'.base64_encode('$'.$q2.'="'.$c.'";eval(\'?>\'.$'.$q1.'($'.$q3.'($'.$q4.'($'.$q2.',$'.$q5.'*2),$'.$q4.'($'.$q2.',$'.$q5.',$'.$q5.'),$'.$q4.'($'.$q2.',0,$'.$q5.'))));').'"));'; 

 

 $s = '<?php '."\n".$s."\n".' ?>'; 

 //echo $s; 

 // 生成 加密后的PHP文件 

 $fpp1 = fopen('temp_'.$filename, 'w'); 

 fwrite($fpp1, $s) or die('写文件错误'); 

 

 ?>



第三个方法





<?php 

 

 class text_auth 

 { 

  var $n_iter; 

 

  function text_auth() 

  { 

   $this->setIter(32); 

  } 

 

  function setIter($n_iter) 

  { 

   $this->n_iter = $n_iter; 

  } 

 

  function getIter() 

  { 

   return $this->n_iter; 

  } 

 

  function encrypt($data, $key) 

  { 

   $n = $this->_resize($data, 4); 

 

   $data_long[0] = $n; 

   $n_data_long = $this->_str2long(1, $data, $data_long); 

 

   $n = count($data_long); 

   if (($n & 1) == 1) { 

    $data_long[$n] = chr(0); 

    $n_data_long++; 

   } 

 

   $this->_resize($key, 16, true); 

   if ( '' == $key ) 

    $key = '0000000000000000'; 

 

   $n_key_long = $this->_str2long(0, $key, $key_long); 

 

   $enc_data = ''; 

   $w   = array(0, 0); 

   $j   = 0; 

   $k   = array(0, 0, 0, 0); 

   for ($i = 0; $i < $n_data_long; ++$i) { 

    if ($j + 4 <= $n_key_long) { 

     $k[0] = $key_long[$j]; 

     $k[1] = $key_long[$j + 1]; 

     $k[2] = $key_long[$j + 2]; 

     $k[3] = $key_long[$j + 3]; 

    } else { 

     $k[0] = $key_long[$j % $n_key_long]; 

     $k[1] = $key_long[($j + 1) % $n_key_long]; 

     $k[2] = $key_long[($j + 2) % $n_key_long]; 

     $k[3] = $key_long[($j + 3) % $n_key_long]; 

    } 

    $j = ($j + 4) % $n_key_long; 

 

    $this->_encipherLong($data_long[$i], $data_long[++$i], $w, $k); 

 

    $enc_data .= $this->_long2str($w[0]); 

    $enc_data .= $this->_long2str($w[1]); 

   } 

 

   return $enc_data; 

  } 

 

  function decrypt($enc_data, $key) 

  { 

   $n_enc_data_long = $this->_str2long(0, $enc_data, $enc_data_long); 

 

   $this->_resize($key, 16, true); 

   if ( '' == $key ) 

    $key = '0000000000000000'; 

 

   $n_key_long = $this->_str2long(0, $key, $key_long); 

 

   $data = ''; 

   $w  = array(0, 0); 

   $j  = 0; 

   $len = 0; 

   $k  = array(0, 0, 0, 0); 

   $pos = 0; 

 

   for ($i = 0; $i < $n_enc_data_long; $i += 2) { 

    if ($j + 4 <= $n_key_long) { 

     $k[0] = $key_long[$j]; 

     $k[1] = $key_long[$j + 1]; 

     $k[2] = $key_long[$j + 2]; 

     $k[3] = $key_long[$j + 3]; 

    } else { 

     $k[0] = $key_long[$j % $n_key_long]; 

     $k[1] = $key_long[($j + 1) % $n_key_long]; 

     $k[2] = $key_long[($j + 2) % $n_key_long]; 

     $k[3] = $key_long[($j + 3) % $n_key_long]; 

    } 

    $j = ($j + 4) % $n_key_long; 

 

    $this->_decipherLong($enc_data_long[$i], $enc_data_long[$i + 1], $w, $k); 

 

    if (0 == $i) { 

     $len = $w[0]; 

     if (4 <= $len) { 

      $data .= $this->_long2str($w[1]); 

     } else { 

      $data .= substr($this->_long2str($w[1]), 0, $len % 4); 

     } 

    } else { 

     $pos = ($i - 1) * 4; 

     if ($pos + 4 <= $len) { 

      $data .= $this->_long2str($w[0]); 

 

      if ($pos + 8 <= $len) { 

       $data .= $this->_long2str($w[1]); 

      } elseif ($pos + 4 < $len) { 

       $data .= substr($this->_long2str($w[1]), 0, $len % 4); 

      } 

     } else { 

      $data .= substr($this->_long2str($w[0]), 0, $len % 4); 

     } 

    } 

   } 

   return $data; 

  } 

 

  function _encipherLong($y, $z, &$w, &$k) 

  { 

   $sum = (integer) 0; 

   $delta = 0x9E3779B9; 

   $n  = (integer) $this->n_iter; 

 

   while ($n-- > 0) { 

    $y  = $this->_add($y, 

         $this->_add($z << 4 ^ $this->_rshift($z, 5), $z) ^ 

          $this->_add($sum, $k[$sum & 3])); 

    $sum = $this->_add($sum, $delta); 

    $z  = $this->_add($z, 

         $this->_add($y << 4 ^ $this->_rshift($y, 5), $y) ^ 

          $this->_add($sum, $k[$this->_rshift($sum, 11) & 3])); 

   } 

 

   $w[0] = $y; 

   $w[1] = $z; 

  } 

 

  function _decipherLong($y, $z, &$w, &$k) 

  { 

   $sum = 0xC6EF3720; 

   $delta = 0x9E3779B9; 

   $n  = (integer) $this->n_iter; 

 

   while ($n-- > 0) { 

    $z  = $this->_add($z, 

         -($this->_add($y << 4 ^ $this->_rshift($y, 5), $y) ^ 

           $this->_add($sum, $k[$this->_rshift($sum, 11) & 3]))); 

    $sum = $this->_add($sum, -$delta); 

    $y  = $this->_add($y, 

         -($this->_add($z << 4 ^ $this->_rshift($z, 5), $z) ^ 

           $this->_add($sum, $k[$sum & 3]))); 

   } 

 

   $w[0] = $y; 

   $w[1] = $z; 

  } 

 

  function _resize(&$data, $size, $nonull = false) 

  { 

   $n  = strlen($data); 

   $nmod = $n % $size; 

   if ( 0 == $nmod ) 

    $nmod = $size; 

 

   if ($nmod > 0) { 

    if ($nonull) { 

     for ($i = $n; $i < $n - $nmod + $size; ++$i) { 

      $data[$i] = $data[$i % $n]; 

     } 

    } else { 

     for ($i = $n; $i < $n - $nmod + $size; ++$i) { 

      $data[$i] = chr(0); 

     } 

    } 

   } 

   return $n; 

  } 

 

  function _hex2bin($str) 

  { 

   $len = strlen($str); 

   return pack('H' . $len, $str); 

  } 

 

  function _str2long($start, &$data, &$data_long) 

  { 

   $n = strlen($data); 

 

   $tmp = unpack('N*', $data); 

   $j  = $start; 

 

   foreach ($tmp as $value) 

    $data_long[$j++] = $value; 

 

   return $j; 

  } 

 

  function _long2str($l) 

  { 

   return pack('N', $l); 

  } 

 

  function _rshift($integer, $n) 

  { 

   if (0xffffffff < $integer || -0xffffffff > $integer) { 

    $integer = fmod($integer, 0xffffffff + 1); 

   } 

 

   if (0x7fffffff < $integer) { 

    $integer -= 0xffffffff + 1.0; 

   } elseif (-0x80000000 > $integer) { 

    $integer += 0xffffffff + 1.0; 

   } 

 

   if (0 > $integer) { 

    $integer &= 0x7fffffff; 

    $integer >>= $n; 

    $integer |= 1 << (31 - $n); 

   } else { 

    $integer >>= $n; 

   } 

 

   return $integer; 

  } 

 

  function _add($i1, $i2) 

  { 

   $result = 0.0; 

 

   foreach (func_get_args() as $value) { 

    if (0.0 > $value) { 

     $value -= 1.0 + 0xffffffff; 

    } 

 

    $result += $value; 

   } 

 

   if (0xffffffff < $result || -0xffffffff > $result) { 

    $result = fmod($result, 0xffffffff + 1); 

   } 

 

   if (0x7fffffff < $result) { 

    $result -= 0xffffffff + 1.0; 

   } elseif (-0x80000000 > $result) { 

    $result += 0xffffffff + 1.0; 

   } 

   return $result; 

  } 

 } 

 ?> 

使用方法参考如下：

// 加密过程

view sourceprint?

 $text_file = S_ROOT . './456.php'; 

 $str = @file_get_contents($text_file); 

 

 require_once S_ROOT . "./text_auth.php"; 

 $text_auth = new text_auth(64); 

 

 $str = $text_auth->encrypt($str, "qianyunlai.com"); 

 

 $filename = S_ROOT . './789.php'; // 加密后的文本为二进制，普通的文本编辑器无法正常查看 

 file_put_contents($filename, $str); 

// 解密过程

view sourceprint

?01 $text_file = S_ROOT . './789.php'; 

 $str = @file_get_contents($text_file); 

 

 require_once S_ROOT . "./text_auth.php"; 

 $text_auth = new text_auth(64); 

 

 $str = $text_auth->decrypt($str, "qianyunlai.com"); 

 

 $filename = S_ROOT . './456.php'; 

 file_put_contents($filename, $str);



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