无法通过Ajax将数据发送到PHP页面 [英] Unable to send data via Ajax to a PHP page

问题描述

我正在尝试通过ajax将变量 number 的值发送到PHP脚本。但PHP脚本不会在浏览器上打开时打印所需的输出。试过但在这里找不到什么错。

任何指针？



index.html

 <  按钮    type   =  submit    class   =  btn btn-success    id     ='  first'    onclick   ='  process（） ;' > 提交<   /按钮 >  
 
 <   script  >  
 
 var number = 0; 
 
函数进程（）
 {
 number ++; 
 
 var xhr; 
 
 if（window.XMLHttpRequest）{
 xhr = new XMLHttpRequest（）; 
} else if（window.ActiveXObject）{
 xhr = new ActiveXObject（Microsoft.XMLHTTP）; 
} 
 
 var data =num =+ number; 
 xhr.open（POST，index.php，true）; 
 xhr.send（数据）; 
 
 <   / script   >  

index.php

 <？php  
 session_start（）; 
  $ number  = $ _POST ['  num ]; 
 $ _SESSION ['  numb'] =  $数目; 
  echo  $ _SESSION ['  numb']; 
 ？>  

解决方案

数字 =

_POST [' num'];

_SESSION [' numb'] =

I'm trying to send the value of a variable number via ajax to a PHP script. But the PHP script is not printing the desired output on opening on a browser. Tried but couldn't find whats wrong here.
Any pointers ?

index.html

<button type="submit" class="btn btn-success" id = 'first' onclick='process();'>Submit</button>

<script>

var number = 0;

function process()
{
number++;

var xhr;

 if (window.XMLHttpRequest) {
    xhr = new XMLHttpRequest();
} else if (window.ActiveXObject) {
    xhr = new ActiveXObject("Microsoft.XMLHTTP");
}

var data = "num=" + number;
xhr.open("POST", "index.php", true);
xhr.send(data);

</script>

index.php

<?php
session_start();
$number = $_POST['num'];
$_SESSION['numb'] = $number;
echo $_SESSION['numb'] ;
?>

解决方案

number =

_POST['num'];

_SESSION['numb'] =

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