php js dynamically displays the progress bar of the server running program_PHP tutorial

php教程 网页特效 动态显示服务器运行程序的进度条
if ('source' == $_get['act']) {           //查看源代码
show_source($_server["script_filename"]);
exit;
}   //end if
set_time_limit(0);
for ($i = 0; $i < 5000; $i++) {
$users[] = 'tom_' . $i;
} //end for
$width = 500; //显示的进度条长度，单位 px
$total = count($users); //总共需要操作的记录数
$pix = $width / $total; //每条记录的操作所占的进度条单位长度
$progress = 0; //当前进度条长度
?>


   
   
   
   

   

如下进度条的动态效果由服务器端 php 程序结合客户端 网页特效 程序生成。

   

   

   

   

   

0%

flush(); //Send the output to the client browser
foreach ($users as $user) {
// It is more convenient to use an empty loop here to simulate Time-consuming operations need to be replaced in actual applications;
// If your operation is not time-consuming, I think you don’t need to use this script:)
for ($i = 0; $i < 10000; $i++) {
;;
}
?>

flush(); //Send the output to the client browser so that it can immediately execute the javascript program output by the server.
$progress += $pix;
} //end foreach
// Finally, set the progress bar to the maximum value $width, and display that the operation is completed
?>

flush ();
?>

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