PHP实现进度条的原理

模版替换，在页面设置一个标识，轮子自己的页面，不发请求给服务器，由服务器端获得进度，然后替换该页面标识，达到进度条效果。

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>

<head>

<meta http-equiv="Expires" content="Fri, Jan 01 1900 00:00:00 GMT">

<meta http-equiv="Pragma" content="no-cache">

<meta http-equiv="Cache-Control" content="no-cache">

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<meta http-equiv="Lang" content="en">

<meta name="author" content="">

<meta http-equiv="Reply-to" content="@.com">

<meta name="generator" content="PhpED 5.8">

<meta name="description" content="">

<meta name="keywords" content="">

<meta name="creation-date" content="01/01/2009">

<meta name="revisit-after" content="15 days">

<title>进度条</title>

<script type="jquery.min.js"></script>

<script type="text/javascript">

function test(){

    location.reload();

    setTimeOut('test()',1000)

}

</script>

</head>

  

<body οnlοad="test()">

  <div id="test">0</div>

   

  <div id="" style="width: 100;">{%a%}</div>

</body>

</html>

服务器代码：

<?php

  

 for($i = 0;$i < 6;$i++){

      echo $i.'<br/>';

      echo str_repeat('      ' ,2024);

      $url = '/t/test.php';

      header("Location: " . $url.'&id='.$i);

      $read_url = realpath('.'.$url);

      $content = file_get_contents('D:/phpnow/htdocs11/design/t/test.php');

     $rr = preg_replace('/{%(.*)%}/','{%'.$i.'%}',$content);

     file_put_contents('D:/phpnow/htdocs11/design/t/test.php',$rr);

      ob_flush();

      flush();

      sleep(1);

  }

 

?>

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