我正在尝试将位于php文件中的php变量传递给单独的JavaScript文件。 我正在尝试将输入函数中 php 文件末尾的变量传递到名为 $message 和 $username 的 jQuery 变量中。
这是我目前所处的位置：
聊天.php
<?php
//form data
$username = $_POST['username'];
$password = $_POST['password'];
//sql server connection credentials
$servername = "localhost";
$serverusername = "suser11";
$serverpassword = "suser11";
$databasename = "chat_database";
// Create connection
$conn = new mysqli($servername, $serverusername, $serverpassword, $databasename);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully<br /><br />";
$username = $conn->real_escape_string($username);
$password = $conn->real_escape_string($password);
$sql = "SELECT Salt FROM users WHERE Username='$username'";
$result = $conn->query($sql);
while($row = $result->fetch_assoc()) {
$salt = $row["Salt"];
}
$sql = "SELECT * FROM users WHERE Username='$username' AND Password=MD5('$password$salt')";
$result = $conn->query($sql);
if($result->num_rows === 0) {
$conn->close(); //close the db connection
header('Location: login.html'); //redirect to login.html
} else {
// output data of each row
while($row = $result->fetch_assoc()) {
echo "UserID: " . $row["user_id"]. " - Name: " . $row["username"]. "<br />";
}
}
// Close the database connection
$conn->close();
?>
<textarea id="myChat" type="text" style="width:500px; height:500px;"></textarea>
<br/>
<br/>
<input id="myText" name="myText"/>
<input type="hidden" value="<?php echo $username; ?>"/>
<button id="add">
<b>Add to chat</b>
</button>
</body>
</html>
这是我的jquery文件
$(document).ready(function() { //start 1
//alert("hello world, jQuery is working");
setInterval(function(){$("#myChat").load("chat.txt")},100); //update the textarea with the text file contents every 10th of a second
var $message = '';
var $username = '';
$('#add').click(function(){ // start 2
var $message = $('#myText').val();
var $username = $('$username').val();
//alert("Got the message");
$.ajax({ // start 3
type: "POST",
url:'myprocess.php',
data:{'xml': $xmlString},
dataType:'text/xml',
//success: function(r){ // start 4
//alert('Got it');
//}, // end 4
//error: function (xhr, desc, err) {
//console.log(xhr);
//console.log("Details: " + desc + "'nError: " + err);
//alert ("Error: " + err);
//}
}); // end 3
$('#myText').val(""); //clears value of text box on click of button with id=add
}); // end 2
//forming proper xml
$xmlString ='<?xml version="1.0" encoding="ISO-8859-1"?>';
$xmlString += '<message><user>' + username + '</user><text>' + $message + '</text></message>';
}); // end 1
在 php 中，你可以像这样传递：只需替换您的代码：
// output data of each row
while($row = $result->fetch_assoc()) {
echo "UserID: " . $row["user_id"]. " - Name: " . $row["username"]. "<br />";
}
使用以下代码：
while($row = $result->fetch_assoc()) {
echo $row["user_id"]."||".$row["username"];
}
在阿贾克斯中：
$.ajax({
type: "POST",
url:'myprocess.php',
data:{'xml': $xmlString},
dataType:'text/xml',
success: function(data){
details = data.split("||");
username = details[0];
password = details[1];
}
});