Question

ajax POST方式传输数据给php

php 接收 aJAX传输的数据时 $username= $_POST['username']; 会出错 Undefined index: username
$username= $_POST(['username']); 会提示Function name must be a string
求高手解答 ！

Answer 1

首先$_POST是数组不是方法，你要确认你是否是post提交的，并且变量是否是username
AJAX:
$.post('index.php',{'username':'a'},function(ret){

});
PHP:
$username = $_POST['username'];

追问

$.ajax({

type: "POST",

url: "login.php",

async: false,

datatype: "json",

data: 'username='+username+'$password='+password,

success:function(json){
alert("登录成功!");
},