各位程序员好，
这是我第一次使用 AJAX，所以我真的需要一些帮助（项目截止日期是下周，只有几件事，我已经完成了）。
所以理论如下：
我正在做一个学生项目，这是一个人们可以宣传他们的待售房屋的网站。
它有一个 MySQL 数据库，其中包含用户和属性的相关信息。关于房产，我有 2 张桌子：
- 属性（存储 id_property、id_user、名称、描述、地址等...）
- propertyimages（存储 id_property、id_image、路径、上传日期）
我需要的是 AJAX 代码，它将一次显示一个图像，直到用户单击图像本身或单击图像下方的下一个/上一个 按钮，创建幻灯片，并使用 id_image 自动填充隐藏的文本框当前图像，因此用户可以单击将从数据库中删除图像的按钮/链接。
到目前为止，这是我的代码：
<?php session_start()?>
<?php include 'w3.html'; ?>
<!-- put <title> code under here -->
<?php include 'essentialhead.html'; ?>
<!-- put <head> code under here -->
<?php include 'closeheadopenbody.html'; ?>
<!-- header -->
<?php include 'header.html'; ?>
<!-- content -->
<?php include 'row1clear.html'; ?>
<?php
$urlexplode = explode('?', "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]");
$token = end($urlexplode);
$connection = mysql_connect("localhost","root")
or die("Problem connecting to MySQL!");
mysql_select_db("imobili");
$propertyquery = mysql_query("SELECT *
FROM property
WHERE id_property='".$token."'");
$rowproperty = mysql_fetch_array($propertyquery);
echo $rowproperty['name'];
?>
<?php include 'row2clear.html'; ?>
<?php
echo'<div class="profilewrapper">
<div class="propertyslideshow">
<div class="tablecell">
<div id="slide" class="slider">'; **HERE IS WHERE I NEED AJAX TO SHOW THE IMAGES**
$imagesquery = mysql_query("SELECT *
FROM propertyimages
WHERE id_property='".$rowproperty['id_property']."'");
while($rowimage = mysql_fetch_array($imagesquery))
{
echo'<img class="sliderimg" alt="no image" src="'.$rowimage['path'].'">';
}
echo' </div>
</div>
</div>
<div class="propertytools">'; **IF THE USER IS THE OWNER OF THE PROPERTY, OR AN ADMINISTRATOR, HE GETS ACCESS TO THE FOLLOWING 3 TOOLS: USE AS MAIN PHOTO, DELETE CURRENT IMAGE, AND DELETE PROPERTY**
if($_SESSION['username'] == $rowproperty['username'] or $_SESSION['permissions'] == 'admin')
{
echo'<form class="property" method="post" name="uploadform" action="" enctype="multipart/form-data">
<fieldset>
<legend>Upload another image</legend>
<input type="file" id="foto" name="foto"/><input class="submit" type="submit" value="Submit"/>
</fieldset>
</form>
<form class="property" method="post" name="uploadform" action="">
<input type="hidden" name="currentimgid" value="**I NEED THE id_img here in real time!**"/>
<input onclick="submitform()" class="submitlink" type="submit" id="propform" name="setprev" value="Use this image as Preview"/>
**THE INPUT BELOW WILL POST THE id_image**
<input onclick="submitform()" class="submitlink" type="submit" id="propform" name="delimg" value="Delete this image"/>
<input onclick="submitform()" class="submitlink" type="submit" id="propform" name="delprop" value="Delete this property"/>
<script>
function submitform()
{
var r=confirm("Are you sure?");
if(r==true)
{
document.propform.submit();
}
}
</script>
</form>';
}
echo' </div>
<div class="propertydetails">
<div class="profiledetails">Date Of Construction</div>'.$rowproperty['dateconstruction'].'
<div class="profiledetails">Rent</div>'.$rowproperty['rentvalue'].'
<div class="profiledetails">Sell</div>'.$rowproperty['sellvalue'].'
</div>
</div>';
echo' <form class="comment" name="commentform" action="">
Leave a comment<br>
<textarea name="commentinput"></textarea>
<input type="submit" class="submit" value="Send">
</form>';
mysql_close();
?>
<?php
if(ISSET($_POST['delprop']))
{
echo'';
$sql = "DELETE FROM property
WHERE id_property = ".$token;
mysql_query($sql);
$sql = "DELETE FROM propertyimages
WHERE id_property = ".$token;
mysql_query($sql);
}
//var_dump($_FILES['foto']);
if(ISSET($_FILES['foto']))
{
$username = $_SESSION['username'];
//upload
$allowedExts = array("gif", "jpeg", "jpg", "png", "JPG");
$explode = explode(".", $_FILES["foto"]["name"]);
$extension = end($explode);
//var_dump($extension);
if ((($_FILES["foto"]["type"] == "image/gif")
|| ($_FILES["foto"]["type"] == "image/jpeg")
|| ($_FILES["foto"]["type"] == "image/jpg")
|| ($_FILES["foto"]["type"] == "image/pjpeg")
|| ($_FILES["foto"]["type"] == "image/x-png")
|| ($_FILES["foto"]["type"] == "image/png"))
&& ($_FILES["foto"]["size"] < 200000000) //20MB
&& in_array($extension, $allowedExts))
{
if ($_FILES["foto"]["error"] > 0)
{
echo "Return Code: " . $_FILES["foto"]["error"] . "<br>";
}
else
{
echo "Upload: " . $_FILES["foto"]["name"] . "<br>";
echo "Type: " . $_FILES["foto"]["type"] . "<br>";
echo "Size: " . ($_FILES["foto"]["size"] / 1024) . " kB<br>";
echo "Temp file: " . $_FILES["foto"]["tmp_name"] . "<br>";
$path1 = "upload/".$username;
echo $path1;
$path2 = "upload/".$username."/".$token;
$dest = "upload/".$username."/".$token. "/". $_FILES["foto"]["name"];
echo $dest;
if (file_exists("upload/" . $_FILES["foto"]["name"]))
{
echo $_FILES["foto"]["name"] . " already exists. ";
}
else
{
if ( ! is_dir($path1)) {
mkdir($path1);
}
if ( ! is_dir($path2)) {
mkdir($path2);
}
move_uploaded_file($_FILES["foto"]["tmp_name"], $dest);
}
}
$datetime = date_create()->format('Y-m-d H:i:s');
$sqlimages = "INSERT INTO propertyimages (path, uploaddate, id_property) VALUES('$dest', '$datetime', '$token')";
//var_dump($sqlimages);
mysql_query($sqlimages);
}
else
{
echo "<script>alert(\"Wrong extension\")</script>";
}
}
?>
<?php include 'contentclose.html'; ?>
<!-- footer -->
<?php include 'footer.php'; ?>