[英]Why isn't my Javascript Ajax call posting values to my PHP script?
這是一個非常奇怪的問題。 Javascript IS調用PHP腳本,PHP腳本IS返回“something”(它返回array ()
)。 問題是,當我試圖通過$_POST['ID']
獲取發布數據的值時,它基本上表示沒有發布值,即使sendData
確實包含ID
的值。 完整的sendData
字符串(通過alert(sendData)
)如下:
ID='1'&Invoice=''&FirstName=''&LastName=''&Description=''&Testimonial=''&ScreenRoom='false'&GlassWindow='true'
Javascript文件: admin.js
function saveChanges() {
var sendData='ID=\'' + document.getElementById("ID").value + '\'';
sendData+='&Invoice=\'' + document.getElementById("Invoice").value + '\'';
sendData+='&FirstName=\'' + document.getElementById("FirstName").value + '\'';
sendData+='&LastName=\'' + document.getElementById("LastName").value + '\'';
sendData+='&Description=\'' + document.getElementById("Description").value + '\'';
sendData+='&Testimonial=\'' + document.getElementById("Testimonial").value + '\'';
sendData+='&ScreenRoom=\'' + document.getElementById("ScreenRoom").checked + '\'';
sendData+='&GlassWindow=\'' + document.getElementById("GlassWindow").checked + '\'';
var req = new XMLHttpRequest();
req.open("POST","scripts/saveChanges.php",true); //true indicates ASYNCHRONOUS
req.send(sendData);
req.onreadystatechange = function() {
//Is request finished? Does the requested page exist?
if(req.readyState==4 && req.status==200) {
//Your HTML arrives here
alert(sendData);
alert(req.responseText);
}
}
}
PHP文件(發布到): saveChanges.php(位於/ scripts /中)
<?php
session_start();
if (!isset($_SESSION['group']) || $_SESSION['group'] != 'admin') {
die ('You do not have permission to access this page!');
}
print_r($_POST);
$ID=$_POST['ID'];
$Invoice=$_POST['Invoice'];
$FirstName=$_POST['FirstName'];
$LastName=$_POST['LastName'];
$Description=$_POST['Description'];
$Testimonial=$_POST['Testimonial'];
$Date=$_POST['Date'];
$GlassWindow=$_POST['GlassWindow'];
$ScreenRoom=$_POST['ScreenRoom'];
?>
我通常只是在一個絕望的狀態來到這里,而我現在花了大約3個小時試圖解決這個問題,我認為自己非常絕望。 任何幫助將不勝感激,請詢問您是否需要更多信息。
您必須設置php的內容類型才能讀取變量
req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
從發布的數據中刪除引號並對其進行正確編碼
var sendData='ID=' + encodeURIComponent(document.getElementById("ID").value);
sendData+='&Invoice=' + encodeURIComponent(document.getElementById("Invoice").value);
sendData+='&FirstName=' + encodeURIComponent(document.getElementById("FirstName").value);
sendData+='&LastName=' + encodeURIComponent(document.getElementById("LastName").value);
sendData+='&Description=' + encodeURIComponent(document.getElementById("Description").value);
sendData+='&Testimonial=' + encodeURIComponent(document.getElementById("Testimonial").value);
sendData+='&ScreenRoom=' + document.getElementById("ScreenRoom").checked;
sendData+='&GlassWindow=' + document.getElementById("GlassWindow").checked;
在發送請求之前設置就緒狀態偵聽器
req.onreadystatechange = function() {
//Is request finished? Does the requested page exist?
if(req.readyState==4 && req.status==200) {
//Your HTML arrives here
alert(sendData);
alert(req.responseText);
}
}
req.send(sendData);
嘗試設置HTTP標頭:
req.setRequestHeader("Content-type","application/x-www-form-urlencoded");
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