从php发送数据数组到javascript
[英]send arrays of data from php to javascript
问题描述
My jphp.php file contains the following : 
我的jphp.php文件包含以下内容：
<?php
$send_array = array();
$edge_number = array('a','b');
$vertex_a = array('c','d');
$send_array[0] = $edge_number;
$send_array[1] = $vertex_a;
echo json_encode($send_array);
?>
and my javascript file contains the following: 并且我的javascript文件包含以下内容：
<html>
<head>
<script language="javascript">
function postRequest(strURL)
{
var xmlHttp;
if(window.XMLHttpRequest)
{ // For Mozilla, Safari, ...
var xmlHttp = new XMLHttpRequest();
}
else if(window.ActiveXObject)
{ // For Internet Explorer
var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlHttp.open('GET', 'jphp.php', true);
xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xmlHttp.onreadystatechange = function()
{
if (xmlHttp.readyState == 4)
{
var obj = jQuery.parseJSON('{"name":"John"}');
alert( obj.name === "John" ); updatepage(xmlHttp.responseText);
}
}
xmlHttp.send('jphp.php');
}
function updatepage(str)
{
document.write(str);
}
var vertex_a = new Array();
var edge_number = new Array();
var rec_array = new Array();
rec_array = {"edge_number", "vertex_a"};
//rec_array[1] = names;
for(var i=0;i<1;i++)
{
document.write(rec_array[i]);
}
$.ajax({
url: 'jphp.php'
type: 'post', // post or get method
data: {}, // if you need to pass post/get parameterds you can encode them here in JSON format
dataType: 'json', // the data type you want returned... we will use json
success: function(responseData) {
alert('edge_number='+responseData[0].join(','));
alert('vertex_a='+responseData[1].join(','));
}
});
I have encode the data data in php .... now i want to send those two arrays of data to javascript..... i don't know the proper commands to use. 我已经用php编码了数据数据....现在我想将这两个数据数组发送到javascript .....我不知道要使用的正确命令。 I am getting confused on googling. 我对谷歌搜索感到困惑。
Please help . 请帮忙 。
3 个解决方案
解决方案1
0 2010-11-27 08:22:43
JavaScript通过AJAX调用PHP，然后在得到响应时使用JSON.parse()将JSON字符串转换为JavaScript对象。
解决方案2
0 2010-11-27 08:27:16
On the client-side I would recommend using jQuery and it's $.parseJSON() function. 在客户端，我建议使用jQuery及其$.parseJSON()函数。
You can do the AJAX call using $.get() , $.post() or $.ajax() . 您可以使用$.get() ， $.post()或$.ajax()进行AJAX调用。 See the documentation for their usage. 请参阅文档以了解其用法。
On the server-side, encode your array with PHP native json_encode() function. 在服务器端，使用PHP本机json_encode()函数对数组进行编码。
Then set the correct HTTP header (!!!) 然后设置正确的HTTP标头（!!!）
header('Content-type: application/json');
and echo the JSON encoded data =] 并回显JSON编码数据=]
解决方案3
0 已采纳 2010-11-27 08:40:48
Simple specific exmple using jquery: 使用jquery的简单特定示例：
The javascript page: JavaScript页面：
$.ajax({
url: 'url/of/page.php'
type: 'post', // post or get method
data: {}, // if you need to pass post/get parameterds you can encode them here in JSON format
dataType: 'json', // the data type you want returned... we will use json
success: function(responseData) {
var edge_number = responseData.edge_number;
var vertex_a= responseData.vertex_a;
var rec_array = responseData;
}
});
In your php: 在您的php中：
$send_array = array(
'edge_number' => array('a','b'),
'vertex_a' => array('c','d')
);
header('Content-type: application/json');
echo json_encode($send_array);
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