php 及时输出消息

ykwll

<?php
header('Content-type: text/html; charset=UTF-8');
set_time_limit( 300 );
ob_end_clean();
apache_setenv('no-gzip', 1);
ini_set('zlib.output_compression', 0);
ini_set('implicit_flush', 1);
ob_start();//开始缓冲数据
?>
<style>
<!--
#notice {
height: 300px;
overflow: hidden;
padding: 5px;
text-align: left;
border: 1px solid #B5CFD9;
height: 100px;
padding: 5px;
text-align: left;
width: 620;
}
-->
</style>

<script type="text/javascript">
var i=0;
function showmessage(message)
{
i++;
if ( i%1000 == 0)
{
document.getElementById("notice").innerHTML = "";
}
document.getElementById("notice").innerHTML += message + "<br />";
document.getElementById("notice").scrollTop = 200000;
}
</script>
<div id="notice">
</div>
<?php
for( $i = 1; $i <= 600; $i++ )
{
$message = "正在安装.... {$i}";
//echo $message.'<br>';
echo '<script type="text/javascript">showmessage("'
. $message.str_repeat(" ", 4096).'");</script><br>';//ie有默认的1k buffer
//echo $i.'<br>';
ob_flush();
flush();
}
exit;
?>