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  ?>