利用base64加解密
base64_encode是加密,而base64_decode是解密
语法:string base64_encode(string data); 语法:string base64_decode(string data);
加密案例如下:
public 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‘); // echo $headerPos.‘<br>‘; //echo $footerPos;//,$footerPos-$headerPos $contents = substr($contents,$headerPos+5); $encode = base64_encode(gzdeflate($contents)); // 开始编码 $encode = ‘<?php‘."\n eval(gzinflate(base64_decode("."‘".$encode."‘".")));\n\n?>"; return file_put_contents($filename,$encode); } return false; } public function index(){ $filename = ‘根目录下绝对路径.php‘; $a=$this->encode_file_contents($filename); if($a){ echo "OK,加密完成!"; }else{ echo "No,加密失败!"; } }