我在下面的表单中有一个取消按钮,如果用户正在上传文件,他们可以单击“取消”按钮取消上传,如果他们愿意的话。但是我遇到的问题是,无论文件是否处于上传过程中,它总是在包含文件名的数据库中插入一行。我想要的是,如果将现有文件或新文件上传到服务器中的“ImageFiles”文件夹中,然后插入包含文件名的数据库行,否则如果上传被取消,则不要插入数据库行,这可能吗?
以下是当前的表单代码:
var $fileImage = $("<form action='imageupload.php' method='post' enctype='multipart/form-data' target='upload_target' onsubmit='return startImageUpload(this);' class='imageuploadform' >" +
"Image File: <input name='fileImage' type='file' class='fileImage' /></label><br/><br/><label class='imagelbl'>" +
"<input type='submit' name='submitImageBtn' class='sbtnimage' value='Upload' /></label>" +
"</p><p class='imagef1_cancel' align='center'></p>" +
"<iframe class='upload_target' name='upload_target' src='#' style='width:0;height:0;border:0px;solid;#fff;'></iframe></form>");
下面是 imageupload.php 脚本,它在其中上传文件并在其中插入数据库行:
<?php
session_start();
...//Connect to DB
$result = 0;
if( is_file("ImageFiles/".$_FILES['fileImage']['name'])) {
$parts = explode(".",$_FILES['fileImage']['name']);
$ext = array_pop($parts);
$base = implode(".",$parts);
$n = 2;
while( is_file("ImageFiles/".$base."_".$n.".".$ext)) $n++;
$_FILES['fileImage']['name'] = $base."_".$n.".".$ext;
move_uploaded_file($_FILES["fileImage"]["tmp_name"],
"ImageFiles/" . $_FILES["fileImage"]["name"]);
$result = 1;
$imagesql = "INSERT INTO Image (ImageFile)
VALUES ('ImageFiles/".mysql_real_escape_string($_FILES['fileImage']['name'])."')";
mysql_query($imagesql);
}
else
{
move_uploaded_file($_FILES["fileImage"]["tmp_name"],
"ImageFiles/" . $_FILES["fileImage"]["name"]);
$result = 1;
$imagesql = "INSERT INTO Image (ImageFile)
VALUES ('ImageFiles/".mysql_real_escape_string($_FILES['fileImage']['name'])."')";
mysql_query($imagesql);
}
mysql_close();
?>