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php防止刷新页面重复提交

Jun 13, 2016 am 11:34 AM
phprefreshandexiststudydevelopussubmitofwantrepeatpreventpage

作为phper,我们在开发和学习php过程中,难免要经常的接受处理表单数据,然而处理表单的时候总会有一个问题,困扰大家,刷新页面重复提交的问题。如何防止刷新页面重复提交呢?

其实在php学习中我们会有很多的方法,比如最简单的,我们可以采用,提交成功后,进行跳转的方法。但是这样做,有时候,会有很多瓶颈,比如,如果我们的页面有很多内容需要加载,尤其是很多跟后台打交道,这样如果跳转重新加载页面的话,可能会对服务器造成压力。 这里我们可以采用另外一种方法,来防止刷新页面重复提交,以便大家更好的学习php。

我们可以利用session来解决。我们首先新建一个session,并赋值,第一次提交后改变session的值,当第二次再此提交此内容时,如果不是我们的赋值,就不在处理传过来的数据。
如:
 session_start();
 $_SESSION['num'] = 0;
 if(isset($_POST['action'] && $_POST['action']=='submit')){
  if($_SESSION['num'] == 0){
   echo ''请再次尝试;'
   $_SESSION['num'] = 1;
  }else{
   echo '您已经提交过了,请不要重复提交';
  }
 }
?>
前台页面没有给出,相信大家都明白前面该怎么写。其实诸如防止刷新页面重复提交的方法,还有很多,在以后php学习交流中,还会更多的列举出来。

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