1 <?php
 2 header('Content-Type:text/html;charset=utf-8');
 3 function encode_file_contents($filename) {
 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         $pos = strpos($contents,'powered by arzn QQ:1314778');
 8         if(false === $pos || $pos>100){ // 去除PHP文件注释和空白，减少文件大小
 9             $contents = php_strip_whitespace($filename);
10             // 去除PHP头部和尾部标识
11             $headerPos = strpos($contents,'<?php');
12             $footerPos = strrpos($contents,'?>');
13             $contents = substr($contents,$headerPos+5,$footerPos-$headerPos);
14             $encode = base64_encode(gzdeflate($contents));// 开始编码
15             $encode = '<?php'."\n eval(gzinflate(base64_decode("."'".$encode."'".")));\n\n?>";
16             return file_put_contents($filename,$encode);
17         }
18     }
19     return false;
20 }
21 //调用函数
22 $filename='1.php';
23 encode_file_contents($filename);
24 echo "OK,加密完成！"
25 ?>

 1 <?php  
 2         $Code = '这里填写要解密的编码'; // base64编码  
 3         $File = 'decoded.php';//解码后保存的文件  
 4         $Temp = base64_decode($Code);  
 5         $temp = gzinflate($Temp);  
 6         $FP = fopen($File,"w");  
 7         fwrite($FP,$temp);  
 8         fclose($FP);  
 9         echo "解密成功！";  
10 ?>