This article mainly introduces the idea of making PHP upload files with progress. Interested friends can refer to it. I hope it will be helpful to everyone.
php Progressive uploading of large files has always been a problem that troubles PHP programmers. Query baidu and Google, and the general methods for uploading with progress are: flash php, socket, apc php, etc. Below I introduce the upload with progress produced by apc php ajax, and post the source code, I hope it will be helpful Useful to everyone.
Alternative PHP Cache (APC) is a free and public optimized code cache for PHP. It is used to provide a free, open and robust framework for caching and optimizing PHP intermediate code.
When using apc, you must first install the apc module.
Step 1: Download php_apc.dll
##Step 2: Make php.ini support apc extension module. Put php_apc.dll into your ext directory, then open php.ini and add:
extension=php_apc.dll apc.rfc1867 = on
apc .max_file_size = 100M
upload_max_filesize = 100M
post_max_size = 100M
//The above parameters can be defined by yourself
The third step : Check whether PHP APC is supported
if (function_exists('apc_fetch')) {
echo 'it surpport apc model!';
} else {
echo "it's not support apc model!";
}
?>Let’s get to the point:Principle:Through the APC module, use ajas from Read the upload progress from the cache. For details, see:
index.php
<?php
$unid=uniqid("");//确定唯一标致，实现多人同时上传
?>
<p class="userinput2">
<p id="captions">先将你要上传的软件上传服务器，上传时请耐心等候...<span class="style1"><br />
</span>
<script type="text/javascript" >
var xmlHttp;
var proNum=0;
var loop=0;
//初始化xmlHttp
function createxml(){
var xmlHttp;
if(window.XMLHttpRequest){
xmlHttp=new XMLHttpRequest();
}else{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
return xmlHttp;
}
xmlHttp=createxml();
//ajas操作
function sendURL() {
var url="getprogress.php?progress_key=<?php echo $unid;?>";
xmlHttp.open("GET",url,false);
if (window.navigator.userAgent.indexOf("Firefox")>=1){
//如果是firefox3.0
xmlHttp.send("progress_key=<?php echo $unid;?>");
if(xmlHttp.status==200) doHttpReadyStateChange();
}else{
xmlHttp.onreadystatechange = doHttpReadyStateChange;
xmlHttp.send("progress_key=<?php echo $unid;?>");
}
}
//回调函数
function doHttpReadyStateChange() {
if (xmlHttp.readyState== 4){
proNum=parseInt(xmlHttp.responseText);
//alert(proNum);
document.getElementByIdx_x("progressinner").style.width = proNum+"%";
document.getElementByIdx_x("showNum").innerHTML = proNum+"%";
if ( proNum < 100){
setTimeout("sendURL()", 200);
}else{
//上传成功后，还不能及时得到信息。还希望高人指点
document.getElementByIdx_x("progressouter").style.display="none";
document.getElementByIdx_x("progressinner").style.display="none";
document.getElementByIdx_x("showNum").style.display="none";
document.getElementByIdx_x("theframe").style.display="none";
document.getElementByIdx_x("link2").style.display="block";
}
}
}
function startProgress(){
document.getElementByIdx_x("progressouter").style.display="block";
setTimeout("sendURL()", 200);
}
function newsofturl(text){
document.getElementByIdx_x("link2").style.display="block";
document.getElementByIdx_x("link2").value=text;
}
</script>
<iframe id="theframe" name="theframe" src="softupload.php?id=<?php echo($unid); ?>" style="border: 0; height: 80px; width: 400px; " frameborder="0" scrolling="no" > </iframe>
<input name="linkdefult" type="hidden" id="linkdefult" value="0" />
<br />
<p id="link2" style="display:none;" > <font size=2>上传成功! 文件大小为：
<input type="text" name="filesize" id="filesize" style="width:50px;"/>
</font><br>
<br>
<font size=2>文件下载地址为：</font><br />
<input type=text name='link' id='link' style='width:380px;' />
</p>
<br/>
<p id="progressouter" style="width: 500px; height: 20px; border: 1px solid #000000; display:none;">
<p id="progressinner" style="position: relative; height: 20px; background-color: #333333; width: 0%; "></p>
</p>
<p id='showNum' style="font-size:12px; color:#333333"></p>
</p>
</p>softupload.php
<?php
$id = $_GET['id'];
?>
<script language="javascript">
//Trim the input text
function Trim(input)
{
var lre = /^\s*/;
var rre = /\s*$/;
input = input.replace(lre, "");
input = input.replace(rre, "");
return input;
}
function CheckForTestFile()
{
var file = document.getElementByIdx_x('Softfile');
var fileName=file.value;
//Checking for file browsed or not
if (Trim(fileName) =='' )
{
alert("请为上传选择一个文件!!!");
file.focus();
return false;
}
//Setting the extension array for diff. type of text files
var extArray = new Array(".rar", ".zip", ".exe", ".gz");
//getting the file name
while (fileName.indexOf("\") != -1)
fileName = fileName.slice(fileName.indexOf("\") + 1);
//Getting the file extension
var ext = fileName.slice(fileName.indexOf(".")).toLowerCase();
for (var i = 0; i < extArray.length; i++)
{
if (extArray[i] == ext)
{
window.parent.startProgress(); return true;
}
}
alert("正确的文件格式为" + (extArray.join(" ")) + "\n请选择一个新的 " + "文件提交上传.");
file.focus();
return false;
}
</script> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<form enctype="multipart/form-data" id="upload_form" action="target.php" method="POST">
<input type="hidden" name="APC_UPLOAD_PROGRESS" id="progress_key" value="<?php echo $id?>"/>
<table width="322" border="0" cellpadding="0" cellspacing="0" id="linkTable">
<tr>
<td >1.选择软件<br />
<input name="Softfile" type="file" id="Softfile" /></td>
<td ><br />
<input name="submit" type="submit" onclick="return CheckForTestFile();" value="上传软件"/></td>
</tr>
</table>
</form>target.php
<script language="javascript">
//将上传后的信息返还给父窗口
function chuanzhi(){
parent.document.getElementByIdx_x('filesize').value=document.getElementByIdx_x('size').value;
parent.document.getElementByIdx_x('link').value=document.getElementByIdx_x('newsoftdir').value;
parent.document.getElementByIdx_x('linkdefult').value=1;
}
</script>
<body onLoad="chuanzhi();">
<?php
//header('Content-Type:text/html;charset=gb2312');
define('SOFTDIR', "./upload/"); //上传后路径
define('HTTPSOFTDIR', "http://www.mysite.com/"); //服务器的路径
//判断上传软件后缀名是否允许
function isSoftExt($extension) {
$ext = array('exe', 'rar', 'zip','gz');
return in_array($extension, $ext) ? true : false;
}
if($_SERVER['REQUEST_METHOD']=='POST'){
$errors['0'] = true;
$errors['1'] = '请选择上传的软件图片';
$errors['2'] = '上传软件图片失败';
$errors['3'] = '上传软件图片失败';
$daytime = date('Y-m-d-h-m-s');
$timename=str_replace("-","",$daytime); //取得当天的日期时间
//检查软件是否是正常上传的
if(!is_uploaded_file($_FILES['Softfile']['tmp_name'])) {
echo "<script>alert('非正常上传！');history.back();</script>";
exit;
}
$extension = pathinfo($_FILES['Softfile']['name'], PATHINFO_EXTENSION);
$filename = $timename."_".$_FILES['Softfile']['name'];
$tmpsize=$_FILES['Softfile']['size'];
$msize=round($tmpsize/1048576 , 2) ."M";
$ksize=round($tmpsize/1024 ,2). "K";
$filesize =$tmpsize>1048576?$msize:$ksize;
//检查软件文件格式
if(!isSoftExt($extension)) {
echo "<script>alert('上传的软件格式有错误！');history.back();</script>";
exit;
}
//移动软件
if(!move_uploaded_file($_FILES['Softfile']['tmp_name'], SOFTDIR. $filename)) {
echo "<script>alert('移动软件出错！');history.back();</script>";
exit;
}else{
echo "<font size=2>上传成功! 文件大小为：<input type=text id='size' value='$filesize'></font><br>";
echo "<font size=2>文件下载地址为：</font><input type=text id='newsoftdir' value='".HTTPSOFTDIR.$filename."' style='width=380'>";
}
}else
echo "请不要直接输入地址！";
?>getprogress.php
<?php
//上传ajas获取进度页面
session_start();
if(isset($_GET['progress_key'])) {
$status = apc_fetch('upload_'.$_GET['progress_key']);
echo ($status['current']/$status['total'])*100;
}
echo 'APC_FILE='.APC_FILE;
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