標籤：rip 執行時間 while return load art 無法 turn array
<?php //下載資料 header(‘Content-Type:text/html;charset=utf-8‘);?><html><body><table border="1" width="300"> <tr> <td width="100">檔案大小</td> <td width="200"><div id="filesize">未知長度</div></td> </tr> <tr> <td>已經下載</td> <td><div id="downloaded">0</div></td> </tr> <tr> <td>完成進度</td> <td><div id="progressbar" style="float:left;width:1px;text-align:center;color:#FFFFFF;background-color:#0066CC"></div> <div id="progressText" style=" float:left">0%</div></td> </tr></table><script type="text/JavaScript">//檔案長度var filesize=0;function $(obj) {return document.getElementById(obj);}//設定檔案長度function setFileSize(fsize) { filesize=fsize; $("filesize").innerHTML=fsize;}//設定已經下載的,並計算百分比function setDownloaded(fsize) { $("downloaded").innerHTML=fsize; if(filesize>0) { var percent=Math.round(fsize*100/filesize); $("progressbar").style.width=(percent+"%"); if(percent>0) { $("progressbar").innerHTML=percent+"%"; $("progressText").innerHTML=""; } else { $("progressText").innerHTML=percent+"%"; } }}</script><?PHPob_start();@set_time_limit(300);//設定該頁面最久執行時間為300秒$url="http://dl_dir.qq.com/qqfile/qq/QQ2010/QQ2010Beta3.exe";//要下載的檔案$newfname="QQ2010Beta3.exe";//本地存放位置，也可以是E:\Temp\QQ2010Beta3.exe，這樣做在Win7下要設定相應許可權$file = fopen ($url, "rb");if ($file) { //擷取檔案大小 $filesize = -1; $headers = get_headers($url, 1); if ((!array_key_exists("Content-Length", $headers))) $filesize=0; $filesize = $headers["Content-Length"]; //不是所有的檔案都會先返回大小的，有些動態網頁面不先返回總大小，這樣就無法計算進度了 if ($filesize != -1) { echo "<script>setFileSize($filesize);</script>";//在前台顯示檔案大小 } $newf = fopen ($newfname, "wb"); $downlen=0; if ($newf) { while(!feof($file)) { $data=fread($file, 1024 * 8 );//預設擷取8K $downlen+=strlen($data);//累計已經下載的位元組數 fwrite($newf, $data, 1024 * 8 ); echo "<script>setDownloaded($downlen);</script>";//在前台顯示已經下載檔案大小 ob_flush(); flush(); } } if ($file) { fclose($file); } if ($newf) { fclose($newf); }}?></body></html>
PHP 下載進度條
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
