利用PHP實(shí)現(xiàn)的進(jìn)度條效果
PHP實(shí)現(xiàn)的進(jìn)度條效果,結(jié)合實(shí)例形式分析了PHP結(jié)合JavaScript動態(tài)顯示百分比進(jìn)度條功能,涉及PHP緩存、數(shù)學(xué)運(yùn)算及JavaScript頁面元素動態(tài)操作相關(guān)技巧,需要的朋友可以參考下。
在做采集的時(shí)候，想通過php來實(shí)現(xiàn)一個(gè)進(jìn)度條功能，谷歌了一下，找了個(gè)合適的代碼。下面直接上代碼：
<?php
/pic/p>
set_time_limit(0);
/pic/p>
ob_end_clean();
/pic/p>
for($i = 0; $i < 188; $i++)
{
$users[] = 'Tom_' . $i;
}
/pic/p>
$total = count($users);
/pic/p>
$width = 500;
/pic/p>
$pix = $width / $total;
/pic/p>
$progress = 0;
?>
<html>
<head>
<title>動態(tài)顯示服務(wù)器運(yùn)行程序的進(jìn)度條</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style>
body,p 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>
<p style="margin:50px auto; padding: 8px; border: 1px solid gray; background: #EAEAEA; width: <?php echo $width+8; ?>px">
<p style="padding: 0; background-color: white; border: 1px solid navy; width: <?php echo $width; ?>px">
<p id="progress"
style="padding: 0; background-color: #FFCC66; border: 0; width: 0px; text-align: center; height: 16px"></p>
</p>
<p id="status"></p>
<p id="percent"
style="position: relative; top: -30px; text-align: center; font-weight: bold; font-size: 8pt">0%</p>
</p>
<?php
flush(); /pic/p>
foreach($users as $user)
{
/pic/p>
/pic/p>
for($i = 0; $i < 1000000; $i++)
{
}
?>
<script language="JavaScript">
updateProgress("正在操作用戶 <?php echo $user; ?> ....", <?php echo min($width, intval($progress)); ?>);
</script>
<?php
flush(); /pic/p>
$progress += $pix;
} /pic/p>
?>
<script language="JavaScript">
/pic/p>
updateProgress("操作完成！", <?php echo $width; ?>);
</script>
<?php
flush();
?>
</body>
</html>
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