如何通过Javascript脚本请求PHP页面并将数据传递给它?然后如何让PHP脚本将数据传递回Java脚本?
client.js:
data = {tohex: 4919, sum: [1, 3, 5]}; // how would this script pass data to server.php and access the response?
server.php:
$tohex = ... ; // How would this be set to data.tohex? $sum = ...; // How would this be set to data.sum? // How would this be sent to client.js? array(base_convert($tohex, 16), array_sum($sum))
从PHP传递数据很容易,您可以使用它生成JavaScript。另一种方法要难一些-您必须通过Javascript请求来调用PHP脚本。
一个示例(为简单起见,使用传统的事件注册模型):
<!-- headers etc. omitted --> <script> function callPHP(params) { var httpc = new XMLHttpRequest(); // simplified for clarity var url = "get_data.php"; httpc.open("POST", url, true); // sending as POST httpc.onreadystatechange = function() { //Call a function when the state changes. if(httpc.readyState == 4 && httpc.status == 200) { // complete and no errors alert(httpc.responseText); // some processing here, or whatever you want to do with the response } }; httpc.send(params); } </script> <a href="#" onclick="callPHP('lorem=ipsum&foo=bar')">call PHP script</a> <!-- rest of document omitted -->
不管get_data.php产生什么,它将出现在httpc.responseText中。错误处理,事件注册和跨浏览器XMLHttpRequest兼容性留给读者简单的练习;)
get_data.php