php ajax XMLHttpRequest POST实例代码

时间：2015-01-23 来源：西部数据作者：西部数据

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.111cn.net/1999/xhtml">

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />

<head>

<script type="text/javascript">

function showUser(str){

    if(window.XMLHttpRequest){ // code for IE7+, Firefox, Chrome, Opera, Safari

        xmlhttp=new XMLHttpRequest();

    }else{ // code for IE6, IE5

        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

    }

    xmlhttp.onreadystatechange=function(){

        if(xmlhttp.readyState==4 && xmlhttp.status==200){

            document.getElementById("txtHint").innerHTML=xmlhttp.responseText;

        }

    }

    xmlhttp.open("POST","ajax.php",true);

    xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=utf-8;");

//开源代码phpfensi.com

    xmlhttp.send('q='+str);

}

</script>

</head>

<body>

<form method="post">

ajax的POST<input name="submit" type="submit" onclick="showUser(28);return false;" value="查询"/>

</form>

<form action="ajax.php" method="post">

真正的POST<input name="q" type="submit" value="28"/>

</form>

<br />

<div id="txtHint"><b>Person info will be listed here.</b></div>

</body>

</html>

php 代码

<?php

header('Content-Type:text/html;charset=utf-8;');

echo "POST数据: ".implode('',file('php://input'));

echo  "<br>POST[q] ".$_POST['q']."<br>";

print_r($_POST);

?>