<html>
<head>
</head>
<body>
<table width="400" border="0" cellspacing="1" cellpadding="1">
<tr>
<td bgcolor="000000">
<table width="400" border="0" cellspacing="0" cellpadding="1">
<tr>
<td bgcolor="ffffff">
<img src="bar.gif" src="bar.gif" width="0" height="16" id="percent_img" name="percent_img" align="absmiddle">
</td>
</tr>
</table>
</td>
<td>
<span id="percent_txt" name="percent_txt">0%</span>
</td>
</tr>
</table>
</body>
</html>
<?php
flush();
for($i=0;$i<=100;$i++) //循环输出100次JavaScript代码
{
$width = $i * 4;
echo "<SCRIPT>";
echo "percent_img.width=$width;"; //控制图片宽度
echo "percent_txt.innerHTML='$i%';"; //控制百分比显示
echo "</SCRIPT>";
for($j=0;$j<1000000;$j++)
{
//为了演示进度条的效果，这里执行了一个空循环
}
flush();
}
?>