php代码加密

 1 <?php  
 2  function encode_file_contents($filename) {  
 3      
 4      $type=strtolower(substr(strrchr($filename,‘.‘),1));  
 5      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  
 6          $contents = file_get_contents($filename); // 判断文件是否已经被编码处理  
 7          $contents = php_strip_whitespace($filename);   
 8 
 9          // 去除PHP头部和尾部标识  
10          $headerPos = strpos($contents,‘<?php‘);  
11          $footerPos = strrpos($contents,‘?>‘);  
12          $contents = substr($contents, $headerPos + 5, $footerPos - $headerPos);  
13          $encode = base64_encode(gzdeflate($contents)); // 开始编码  
14          $encode = ‘<?php‘."\n eval(gzinflate(base64_decode("."‘".$encode."‘".")));\n\n?>";   
15 
16          return file_put_contents($filename, $encode);  
17      }  
18      return false;  
19  }   
20 
21  //调用函数  
22  $filename = ‘./test.php‘;  
23 encode_file_contents($filename);  
24  echo "OK,加密完成！";
25  ?>