Ajax，PHP中的未定义索引$

本文介绍了Ajax，PHP中的未定义索引$ _POST错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

在Ajax中获取未定义的索引postBody错误 我不知道该如何解决. 我已经检查了很多帖子，但这没有帮助. index.php中的HTML代码:

Getting Undefined Index postBody Error in Ajax I don't know how to fix this. I have already checked many posts but that didn't help. HTML CODE in index.php:

<form method="post"> <textarea name="postBody" type="text" id="postBody" placeholder="What's on your mind?"></textarea> <input type="submit" name="postButton" id="postButton" value="POST" class="cg nq w-50"> </form>

在jquery cdn之后，我的index.php中是Ajax代码.

Here is Ajax Code in my index.php at the end after jquery cdn.

$("#postButton").click(function(e) { e.preventDefault(); var body = $("#postBody").val(); var dataString = 'postBody='+body; $.ajax({ type:'POST', data:dataString, url:'submitPost.php', success:function(data) { alert(data); } }); });

这是SubmitPost.php代码.

And this is submitPost.php Code.

include("config.php"); global $con; $body = $_POST['postBody']; $date_added = date("F j, Y, g:i a"); $query = mysqli_query($con,"INSERT INTO posts VALUES('','$body','$date_added')"); if($query == 1){ echo "Post Submitted"; else{ echo "Error"; }

此代码实际上返回警报中的已提交帖子"，并插入$ date_add，而不是$ body. 错误:3上的postSubmit.php中的未定义索引postBody.

This code actually Return Post Submitted in alert and Insert the $date_added and but not $body. Error: undefined Index postBody in postSubmit.php on 3.

推荐答案

您犯的一些错误是:

• 拼写错误的form标记
• data错误地通过ajax

• mis-spelled form tag
• wrong passing of data through ajax

$("#postButton").click(function(e) { e.preventDefault(); var body = $("#postBody").val(); $.ajax({ type: 'POST', data: {'postBody': body}, url: 'submitPost.php', success: function(data) { alert(data); } }); });

<script src="ajax.googleapis/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <form method="post"> <textarea name="postBody" type="text" id="postBody" placeholder="What's on your mind?"></textarea> <input type="submit" name="postButton" id="postButton" value="POST" class="cg nq w-50"> </form>