PHP实现的进度条效果详解，php进度条详解
本文实例讲述了PHP实现的进度条效果。分享给大家供大家参考，具体如下：
在做采集的时候，想通过php来实现一个进度条功能，谷歌了一下，找了个合适的代码。下面直接上代码：
<?php
//防止执行超时
set_time_limit(0);
//清空并关闭输出缓存
ob_end_clean();
//需要循环的数据
for($i = 0; $i < 188; $i++)
{
$users[] = 'Tom_' . $i;
}
//计算数据的长度
$total = count($users);
//显示的进度条长度，单位 px
$width = 500;
//每条记录的操作所占的进度条单位长度
$pix = $width / $total;
//默认开始的进度条百分比
$progress = 0;
?>
<html>
<head>
<title>动态显示服务器运行程序的进度条</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style>
body,div input {
font-family: Tahoma;
font-size: 9pt
}
</style>
<script language="JavaScript">
<!--
function updateProgress(sMsg, iWidth)
{
document.getElementById("status").innerHTML = sMsg;
document.getElementById("progress").style.width = iWidth + "px";
document.getElementById("percent").innerHTML = parseInt(iWidth / <?php echo $width; ?> * 100) + "%";
}
-->
</script>
</head>
<body>
<div style="margin:50px auto; padding: 8px; border: 1px solid gray; background: #EAEAEA; width: <?php echo $width+8; ?>px">
<div style="padding: 0; background-color: white; border: 1px solid navy; width: <?php echo $width; ?>px">
<div id="progress"
style="padding: 0; background-color: #FFCC66; border: 0; width: 0px; text-align: center; height: 16px"></div>
</div>
<div id="status"></div>
<div id="percent"
style="position: relative; top: -30px; text-align: center; font-weight: bold; font-size: 8pt">0%</div>
</div>
<?php
flush(); //将输出发送给客户端浏览器
foreach($users as $user)
{
// 在此处使用空循环模拟较为耗时的操作，实际应用中需将其替换；
// 如果你的操作不耗时，我想你就没必要使用这个脚本了 :)
for($i = 0; $i < 1000000; $i++)
{
}
?>
<script language="JavaScript">
updateProgress("正在操作用户 <?php echo $user; ?> ....", <?php echo min($width, intval($progress)); ?>);
</script>
<?php
flush(); //将输出发送给客户端浏览器，使其可以立即执行服务器端输出的 JavaScript 程序。
$progress += $pix;
} //end foreach
?>
<script language="JavaScript">
//最后将进度条设置成最大值 $width，同时显示操作完成
updateProgress("操作完成！", <?php echo $width; ?>);
</script>
<?php
flush();
?>
</body>
</html>
更多关于PHP相关内容感兴趣的读者可查看本站专题：《PHP数组(Array)操作技巧大全》、《PHP数学运算技巧总结》、《php正则表达式用法总结》、《PHP+ajax技巧与应用小结》、《PHP运算与运算符用法总结》、《PHP网络编程技巧总结》、《PHP基本语法入门教程》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。
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