PHP如何接收javascript POST的数据？

你先去了解一下 jsonp 是怎么工作的
如果你是知道的话，那么你应该知道客户端实际是与下面等价的代码
<script src='url?回调=函数名&参数=值......'></script>
即包含远程js代码没有跨域问题，但参数是按 get 方式传递的
php 必须返回一个有效的 js 语句，如
data = {....}
data = [....]
func({....})
func([....])
现在比较常用的是返回一个函数调用语句，函数名就是 url 参数中的回调函数名

关键是数据包里的格式就不对了，错误的地址里出现的QueryString是正确的，而正确的地址里却在body里

我大概明白了，jsonp其实就是get方法
但是，你说的回调我还是不明白，我就是想把数值，传送给PHP再做进一步的处理，能教教我么？我是自学的，专业术语不太懂= =

这是所有代码
文件名为simulation.js和simulation.php        function hex_md5(pass) {
         var mergePas=pass+"{1#2$3%4(5)6@7!poeeww$3%4(5)djjkkldss}";
            return binl2hex(core_md5(arr2binl(str2binl(mergePas)),32));
        }
        function core_md5(x, len) {
            var a = 1732584193;
            var b = -271733879;
            var c = -1732584194;
            var d = 271733878;
            for (var i=0;i<x.length;i+=16) {
                var olda = a;
                var oldb = b;
                var oldc = c;
                var oldd = d;
a = ff(a, b, c, d, x[i+ 0], 7 , -680876936);
d = ff(d, a, b, c, x[i+ 1], 12, -389564586);
c = ff(c, d, a, b, x[i+ 2], 17,  606105819);
b = ff(b, c, d, a, x[i+ 3], 22, -1044525330);
a = ff(a, b, c, d, x[i+ 4], 7 , -176418897);
d = ff(d, a, b, c, x[i+ 5], 12,  1200080426);
c = ff(c, d, a, b, x[i+ 6], 17, -1473231341);
b = ff(b, c, d, a, x[i+ 7], 22, -45705983);
a = ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
d = ff(d, a, b, c, x[i+ 9], 12, -1958414417);
c = ff(c, d, a, b, x[i+10], 17, -42063);
b = ff(b, c, d, a, x[i+11], 22, -1990404162);
a = ff(a, b, c, d, x[i+12], 7 ,  1804603682);
d = ff(d, a, b, c, x[i+13], 12, -40341101);
c = ff(c, d, a, b, x[i+14], 17, -1502002290);
b = ff(b, c, d, a, x[i+15], 22,  1236535329);
a = gg(a, b, c, d, x[i+ 1], 5 , -165796510);
d = gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
c = gg(c, d, a, b, x[i+11], 14,  643717713);
b = gg(b, c, d, a, x[i+ 0], 20, -373897302);
a = gg(a, b, c, d, x[i+ 5], 5 , -701558691);
d = gg(d, a, b, c, x[i+10], 9 ,  38016083);
c = gg(c, d, a, b, x[i+15], 14, -660478335);
b = gg(b, c, d, a, x[i+ 4], 20, -405537848);
a = gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
d = gg(d, a, b, c, x[i+14], 9 , -1019803690);
c = gg(c, d, a, b, x[i+ 3], 14, -187363961);
b = gg(b, c, d, a, x[i+ 8], 20,  1163531501);
a = gg(a, b, c, d, x[i+13], 5 , -1444681467);
d = gg(d, a, b, c, x[i+ 2], 9 , -51403784);
c = gg(c, d, a, b, x[i+ 7], 14,  1735328473);
b = gg(b, c, d, a, x[i+12], 20, -1926607734);
a = hh(a, b, c, d, x[i+ 5], 4 , -378558);
d = hh(d, a, b, c, x[i+ 8], 11, -2022574463);
c = hh(c, d, a, b, x[i+11], 16,  1839030562);
b = hh(b, c, d, a, x[i+14], 23, -35309556);
a = hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
d = hh(d, a, b, c, x[i+ 4], 11,  1272893353);
c = hh(c, d, a, b, x[i+ 7], 16, -155497632);
b = hh(b, c, d, a, x[i+10], 23, -1094730640);
a = hh(a, b, c, d, x[i+13], 4 ,  681279174);
d = hh(d, a, b, c, x[i+ 0], 11, -358537222);
c = hh(c, d, a, b, x[i+ 3], 16, -722521979);
b = hh(b, c, d, a, x[i+ 6], 23,  76029189);
a = hh(a, b, c, d, x[i+ 9], 4 , -640364487);
d = hh(d, a, b, c, x[i+12], 11, -421815835);
c = hh(c, d, a, b, x[i+15], 16,  530742520);
b = hh(b, c, d, a, x[i+ 2], 23, -995338651);
a = ii(a, b, c, d, x[i+ 0], 6 , -198630844);
d = ii(d, a, b, c, x[i+ 7], 10,  1126891415);
c = ii(c, d, a, b, x[i+14], 15, -1416354905);
b = ii(b, c, d, a, x[i+ 5], 21, -57434055);
a = ii(a, b, c, d, x[i+12], 6 ,  1700485571);
d = ii(d, a, b, c, x[i+ 3], 10, -1894986606);
c = ii(c, d, a, b, x[i+10], 15, -1051523);
b = ii(b, c, d, a, x[i+ 1], 21, -2054922799);
a = ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
d = ii(d, a, b, c, x[i+15], 10, -30611744);
c = ii(c, d, a, b, x[i+ 6], 15, -1560198380);
b = ii(b, c, d, a, x[i+13], 21,  1309151649);
a = ii(a, b, c, d, x[i+ 4], 6 , -145523070);
d = ii(d, a, b, c, x[i+11], 10, -1120210379);
c = ii(c, d, a, b, x[i+ 2], 15,  718787259);
b = ii(b, c, d, a, x[i+ 9], 21, -343485551);
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
            }
        return new Array(a,b,c,d);

        }
        function cmn(q, a, b, x, s, t) {
            return safe_add(rol(safe_add(safe_add(a,q),safe_add(x,t)),s),b);
        }
        function ff(a, b, c, d, x, s, t) {
            return cmn((b & c) | ((~ b) & d),a,b,x,s,t);
        }
        function gg(a, b, c, d, x, s, t) {
            return cmn((b & d) | (c & (~ d)),a,b,x,s,t);
        }
        function hh(a, b, c, d, x, s, t) {
            return cmn(b ^ c ^ d,a,b,x,s,t);
        }
        function ii(a, b, c, d, x, s, t) {
            return cmn(c ^ (b | (~ d)),a,b,x,s,t);
        }
        function safe_add(x, y) {
var lsw= (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
        }
        function rol(num, cnt) {
            return (num << cnt) | (num >>> (32 - cnt));
        }
        function str2binl(str) {
         var len=str.length;
            var arr=new Array(len);
            for(var i=0;i<len;i++)
           {
          var cc=str.charCodeAt(i);
          arr[i]=cc&0xFF;
   }
         return arr;


//            var bin = new Array();
//            var mask = (1 << strsize)-1;
//            var i = 0;
//            while (i<(str.length*strsize)) {
//                bin[i >> 5] = (bin[i >> 5]) | ((str.charCodeAt(i/strsize) & mask) << i%32);
//                i = i+strsize;
//            }
//            return bin;
        }
function binl2hex(binarray){
var hex_tab = "0123456789abcdef";
var str = "";
for(var i = 0; i < binarray.length * 4; i++)
{
str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
hex_tab.charAt((binarray[i>>2] >> ((i%4)*8)) & 0xF);
}
return str;
}
function arr2binl(arr){
var nblk = ((arr.length + 8) >> 6) + 1 ;
var blks = new Array(nblk * 16);
for(var i = 0; i < nblk * 16; i++) blks[i] = 0;
for(var j = 0; j < arr.length; j++)
blks[j>>2] |= (arr[j] & 0xFF) << ((j%4) * 8);
blks[j>>2] |= 0x80 << ((j%4) * 8);
blks[nblk*16-2] = arr.length * 8;
return blks;
}
///////////////////////////////////////////////////////////////////////
//
//自制代码段
//
///////////////////////////////////////////////////////////////////////
/* var ppp;
ppp = hex_md5('1111');
var lac='3384';
alert (typeof lac);
alert(ppp);
alert(hex_md5(ppp+lac));
*/
$(document).ready(function() {
    $("#submit").click(function(){
username = $("#username").val();
password = $("#password").val();
valc = $("#valc").val();
password = hex_md5(hex_md5(password)+valc);
//password = hex_md5(password + valc);
var data = new Object();
data.j_username=username;
data.j_password=password;
data.j_valcode=valc;
alert(password);
$.ajax({
url : './simulation.php',
type : "post",
dataType : "jsonp",
jsonp : "jsonp",
data:data,
})
})
});
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js"></script>
<script type="text/javascript" src="simulation.js"></script>
<script ></script>
</head><input type="text" name="username" id="username" size="14" maxlength="16" value="1111"><br>
<input type="password" name="password" id="password" size="14" maxlength="16"><br>
<input type="text" name="valc" id="valc" size="4" maxlength="4">
<a href="#" id="submit" name="submit">登陆</a>
<?php error_reporting(0);
sleep(1);
echo "接收的数值为".print_r($GET['j_username']);
?>

jsonp是返回的格式，不是Post过去的数据格式。跨域才会用到jsonp。
Ajax里Post过去的数据，PHP里怎么接收其它页面的Post数据，这个也一样。

如果 ajax 没有定义回调函数，那么你在 php 中输出的东西就看不到了

我是用PHP接收处理后用PHP打印出来的...
能不能举个例子我这里实在是接收不到数据

上面那段js代码POST的数据实在不能接收到，能帮我改改么？

我在PHP页面里写了
echo $_POST['j_username'];
echo $_GET['j_username'];
echo $_GET['jsonp'];

不是接受不到数据，而是你看不到 php 打印的内容         $.ajax({
            url : './simulation.php',
            type : "post",
            dataType : "jsonp",
            jsonp : "jsonp",
            data:data,
            })
改写为
         $.ajax({
            url : './simulation.php',
            type : "post",
            data:data,
            success : function(d) {
               alert(d);
            }
         })
simulation.php 中
print_r($_POST);
你就可以看到传入的是什么了

还是不行...
我把代码精简了下，麻烦你改改...
$(document).ready(function() {
    $("#submit").click(function(){
username = '1111';
password = '2222';
valc = '3333';
var data = new Object();
data.j_username=username;
data.j_password=password;
data.j_valcode=valc;
alert(password);
$.ajax({
url : 'simulation.php',
type : "post",
data:data,
success : function(d) {
               alert(d);
            }
})
})
});
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script>
<script type="text/javascript" src="simulation.js"></script>
<script ></script>
</head><input type="text" name="username" id="username" size="14" maxlength="16" value="1111"><br>
<input type="password" name="password" id="password" size="14" maxlength="16"><br>
<input type="text" name="valc" id="valc" size="4" maxlength="4">
<a href="" id="submit" name="submit">登陆</a>
<?php error_reporting(0);
echo $_POST['j_username'];
print_r($_POST);
?>JQuery源是MSDN的不能用的话还得改下...
拜托了T T
这个问题困扰我一整天了...

那段 js 改一下
$(document).ready(function() {
    $("#submit").click(function(){
         $.ajax({
            url : 'simulation.php',
            type : "post",
            data: {username:"1111", password:'2222',valc:'3333'},
            success : function(d) {
               alert(d);
            }
            })
        })
});

哦哦哦在chorme里不不弹出alert，改成document.writeln((d));出来了~~~我爱你版主~~~
、
谢谢你拉~~~

貌似这个在chorme下不能用，点无数次都不会显示

学会用chorme的开发者工具，对于Ajax的调试很方便实用。

调试易

PHP如何接收javascript POST的数据？

解决方案 »