Session变量从while循环发送特定的变量 [英] Session variables sending specific variable from a while loop
问题描述
我有这个简单的 while循环从MySQL查询中检索数据并显示在我的主页几个环节。
我想避免使用PHP get函数，并添加查询字符串，以我的网址
我想使用会话变量，但我需要帮助，我pretty的肯定，这无法做到的。
当访问者点击从几个所得由while循环显示的链接，该特定变量将在会议上进行设置。
在我的code，会话将始终发送的最后一个变种。
可以这样做？
＆LT ;?在session_start（）; //开始会话变量
$结果= mysql_query（我的查询）;
而（$片= mysql_fetch_assoc（$结果））{
$ URL = $片['URL'];
$名称= $片['名称']; ？＆GT;
＆LT; A HREF =＆LT ;?回声$网址;＆gt;中＆GT;＆LT ;?回声$名称; ？＆GT;＆所述; / a取代;
＆LT ;? }
$ _SESSION ['名称'] = $名称; //存储会话数据＆GT？;
你希望怎么做可以使用JavaScript函数，这将使一个AJAX请求发送点击名称服务器来完成。服务器端code然后将存储所需的会话变量
＆LT ;?
在session_start（）; //开始会话变量
$结果= mysql_query（我的查询）;
$ NAME ='';
而（$片= mysql_fetch_assoc（$结果））{
$ URL = $片['URL'];
$名称= $片['名称']; ？＆GT;
＆LT; A HREF =＆LT ;?回声$网址;＆gt;中的onclick ='setSession（LT ;?回声$网址;？＆GT;），'＆GT;＆LT ;?回声$名称; ？＆GT;＆所述; / a取代;
＆LT ;? }
现在的setSession将使一个AJAX调用传递得到的值。这可以再保存为会议URL通过一个简单的服务器端code
JavaScript的code至present在同一页上您有网页链接
＆LT;脚本类型=文/ JavaScript的'＆GT;
功能getXMLHTT prequest（）{
尝试 {
REQ =新XMLHtt prequest（）;
}赶上（ERR1）{
尝试 {
REQ =新的ActiveXObject（MSXML2.XMLHTTP）;
}赶上（ERR2）{
尝试 {
REQ =新的ActiveXObject（Microsoft.XMLHTTP）;
}赶上（ERR3）{
REQ = FALSE;
}
}
}
返回REQ;
}
VAR HTTP = getXMLHTT prequest（）;
功能setSession（值）{
VAR myurl =session.php文件; //为present在同一个文件夹中
VAR myurl1 = myurl;
myRand = parseInt函数（的Math.random（）* 999999999999999）;
VAR modurl = myurl1 + myRand +URL+价值兰特=？; //这将设置的URL发送
http.open（GET，modurl，真正的）;
http.onreadystatechange = useHtt presponse;
http.send（空）;
}
功能useHtt presponse（）{
如果（http.readyState == 4）{
如果（http.status == 200）{
VAR MYTEXT = http.responseText;
//我不觉得你会喜欢做的任何事情，与响应
// U可以将用户重定向到REQ页面（点击链接），一旦会话URL已经设置好的
}
}
其他 {
//直到获得任何结果，没有做任何事情
}
}
＆LT; / SCRIPT＆GT;
PHP服务器端code是present设置所需的URL作为会话值
＆LT; PHP
在session_start（）;
如果（$ _ SESSION [网址]！=）{
取消设置（$ _ SESSION ['URL']）;
$ _SESSION [网址] = $ _REQUEST ['URL'];
}
其他 {
$ _SESSION [网址] = $ _REQUEST ['URL'];
}
？＆GT;
I have this simple while loop which retrieves data from a mysql query and displays several links on my homepage.
I would like to avoid using the php get function and add query strings to my urls
I am thinking of using session variables but I need help and I'm pretty sure this can't be done.
When a visitor clicks a link from the several ones displayed by the while loop, that particular variable would be set in a session.
In my code, the session will always send the last var.
Can this be done?
<? session_start(); // Start Session Variables
$result = mysql_query("my query");
while($slice = mysql_fetch_assoc($result)){
$url = $slice['url'];
$name = $slice['name']; ?>
<a href="<? echo $url; ?>"><? echo $name; ?></a>
<? }
$_SESSION['name'] = $name; // Store session data ?>
What you wish to do can be done by using a javascript function which will make an AJAX request sending the clicked name to the server. The server side code will then store the required session variable
<?
session_start(); // Start Session Variables
$result = mysql_query("my query");
$name = '';
while($slice = mysql_fetch_assoc($result)){
$url = $slice['url'];
$name = $slice['name']; ?>
<a href="<? echo $url; ?>" onclick='setSession(<? echo $url;?>);'><? echo $name; ?></a>
<? }
Now the setSession will make an AJAX call passing the value obtained. This can be then saved as session url by a simple server side code
The javascript code to present on the same page as your page having links
<script type='text/javascript'>
function getXMLHTTPRequest() {
try {
req = new XMLHttpRequest();
} catch(err1) {
try {
req = new ActiveXObject("Msxml2.XMLHTTP");
} catch (err2) {
try {
req = new ActiveXObject("Microsoft.XMLHTTP");
} catch (err3) {
req = false;
}
}
}
return req;
}
var http = getXMLHTTPRequest();
function setSession(value) {
var myurl = "session.php"; // to be present in the same folder
var myurl1 = myurl;
myRand = parseInt(Math.random()*999999999999999);
var modurl = myurl1+"?rand="+myRand+"url"+value ; // this will set the url to be sent
http.open("GET", modurl, true);
http.onreadystatechange = useHttpResponse;
http.send(null);
}
function useHttpResponse() {
if (http.readyState == 4) {
if(http.status == 200) {
var mytext = http.responseText;
// I dont think u will like to do any thing with the response
// u can redirect the user to the req page (link clicked), once the session url has been setted
}
}
else {
// don't do anything until any result is obtained
}
}
</script>
PHP server side code to be present to set the required url as session value
<?php
session_start();
if($_SESSION['url']!=""){
unset($_SESSION['url']);
$_SESSION['url'] = $_REQUEST['url'];
}
else {
$_SESSION['url'] = $_REQUEST['url'];
}
?>
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