请假下各位php表单问题-PHP Tutorial-php.cn

请假下各位php表单问题

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Release： 2016-06-23 13:26:28

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PHP代码submit.php
这个代码存在的问题，只要刷新submit.php这个页面就会不断往数据库中添加空白数据，请问（我是小白太高级的目前还不懂）该如何增加对字段验证或者增加验证码功能

<?php/** * @处理表单提交数据*/define('INCLUDE_CHECK',1);require_once('connect.php');$name=stripslashes($_POST['name']);$tel=stripslashes($_POST['tel']);$ask=stripslashes($_POST['ask']);$des=stripslashes($_POST['des']);$time=date('Y年m月d日H时i分s秒',time());$url=stripslashes($_POST['url']);$query=mysql_query("insert into say(name,tel,ask,des,time,url)values('$name','$tel','$ask','$des','$time','$url')");?>

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回复讨论(解决方案)

$query=mysql_query("insert into say(name,tel,ask,des,time,url)values('$name','$tel','$ask','$des','$time','$url')");这一段代码放在一个if条件判断里面。在判断中进行对应的条件判断，比如$name != "" 这样。

<?php/** * @处理表单提交数据*/define('INCLUDE_CHECK',1);require_once('connect.php');if($_POST) {  $name=stripslashes($_POST['name']);  $tel=stripslashes($_POST['tel']);  $ask=stripslashes($_POST['ask']);  $des=stripslashes($_POST['des']);  $time=date('Y年m月d日H时i分s秒',time());   $url=stripslashes($_POST['url']);  $query=mysql_query("insert into say(name,tel,ask,des,time,url)values('$name','$tel','$ask','$des','$time','$url')");}?>

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如果有post数据就执行数据库插入，否则不执行

if(isset($_POST['name']) && !empty($_POST['name'])){	$query=mysql_query("insert into say(name,tel,ask,des,time,url)values('$name','$tel','$ask','$des','$time','$url')");}

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在前台表单的submit按钮上加一个value
后台判断$_post['submit']是否有值

if($_post['submit']){表单提交操作}else{不是提交操作}

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