Home > Backend Development > PHP Tutorial > PHP implements uploading files without page refresh

PHP implements uploading files without page refresh

巴扎黑
Release: 2016-11-12 15:05:41
Original
927 people have browsed it

Front html page:

<html>
<head>
<title>无刷新上传文件</title>
<meta Content-type="text/html" charset="utf-8" />
<script type="text/javascript">
function startUpload() {
document.getElementById(&#39;processing&#39;).innerHTML = &#39;loding...&#39;;
return true;
}
function stopUpload(rel){
var msg = "";
switch (rel) {
case 0:
msg = "上传成功";
break;
case 1:
msg = "上传的文件超过限制";
break;
case 2:
msg = "只能上传图片文件";
break;
default:
msg = "上传文件失败";
}
document.getElementById(&#39;processing&#39;).innerHTML = msg;
}
</script>
</head>
<body>
<div style="text-align:center">
<div id="processing"></div>
<form action="upload.php" method="post" enctype="multipart/form-data" 
target="form-target" onsubmit="startUpload();">
<input type="hidden" name="MAX_FILE_SIZE" value="1000000" />
<input type="file" name="myfile" />
<input type="submit" name="sub" value="上传" />
</form>
<iframe style="width:0; height:0; border:0;" name="form-target"></iframe>
</div>
</body>
</html>
Copy after login

Backend php code: upload.php:

<?php
sleep(2);
$fileTypes = array(&#39;jpg&#39;,&#39;png&#39;,&#39;gif&#39;,&#39;bmp&#39;);
$result = null;
$uploadDir = &#39;./upload&#39;;
$maxSize = 1 * pow(2,20);
if ($_SERVER[&#39;REQUEST_METHOD&#39;] == &#39;POST&#39; && isset($_POST[&#39;sub&#39;])) {
$myfile = $_FILES[&#39;myfile&#39;];
$myfileType = substr($myfile[&#39;name&#39;], strrpos($myfile[&#39;name&#39;], ".") + 1);
if ($myfile[&#39;size&#39;] > $maxSize) {
$result = 1;
} else if (!in_array($myfileType, $fileTypes)) {
$result = 2;
} elseif (is_uploaded_file($myfile[&#39;tmp_name&#39;])) {
$toFile = $uploadDir . &#39;/&#39; . $myfile[&#39;name&#39;];
if (@move_uploaded_file($myfile[&#39;tmp_name&#39;], $toFile)) {
$result = 0;
} else {
$result = -1;
}
} else {
$result = 1;
}
}
?>
<script type="text/javascript">
window.top.window.stopUpload(<?php echo $result; ?>);
</script>
Copy after login


Related labels:
php
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template