search

Home  >  Article  >  Backend Development  >  PHP prevent external form submission

PHP prevent external form submission

WBOY
WBOYOriginal
2016-07-25 08:42:13971browse

[PHP] code

  1. $referer = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : NULL;
  2. $host = $_SERVER['HTTP_HOST'];
  3. echo 'Submitted address:'. $referer;
  4. echo '
    ';
  5. echo 'This site's domain name: '.$host;
  6. echo '
    ';
  7. echo substr($referer,7,strlen($host));
  8. if(substr($referer,7,strlen($host)) != $host){
  9. echo 'illegal operation';
  10. }else{
  11. echo 'normal operation';
  12. }
Copy code
PHP


Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：20 Key Points for PHP Programming Efficiency--PHP Technology Tutorial SharingNext article：20 Key Points for PHP Programming Efficiency--PHP Technology Tutorial Sharing

Related articles

See more