Codeigniter视图显示进度 [英] Codeigniter view show progress
问题描述
我正在使用Codeigniter，并希望显示XML导入的进度.但我面临的问题是当查看加载时，它卡在加载中(空白页)，当我可以查看时，它显示100％完成.
I am using Codeigniter and want to show progress of XML import. but issue i am facing is When view load, it stuck on loading (blank page) and when i can see view its shows 100% done.
我的代码如下
$i=0;
$count=sizeof($record->List);
foreach($record->List as $Item)
{
$i++;
echo "processing ".$i." of ".$count;
---processing code which takes times to process---
---processing code which takes times to process---
}
此代码处于视图中，但是当我单击链接以加载此视图时，我必须等待所有过程完成，然后在所有过程完成后才能看到视图.
this code is in view but when i click on link to load this view, i have to wait for all process to complete and then i can see view when all process is done.
我想要的是:
-
显示视图(空).
Show view (empty).
然后继续循环打印每一行.
Then keep on printing each line as loop go.
谢谢
推荐答案
在这里，您将获得一个使用AJAX的进度条示例:
Here you got a example for progress bar using AJAX:
index.php
<?php
// Start the session.
session_start();
?>
<!DOCTYPE html>
<html>
<head>
<title>Progress Bar</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<style>
#progress {
width: 500px;
border: 1px solid #aaa;
height: 20px;
}
#progress .bar {
background-color: #ccc;
height: 20px;
}
</style>
</head>
<body>
<div id="progress"></div>
<div id="message"></div>
<script>
var timer;
// The function to refresh the progress bar.
function refreshProgress() {
// We use Ajax again to check the progress by calling the checker script.
// Also pass the session id to read the file because the file which storing the progress is placed in a file per session.
// If the call was success, display the progress bar.
$.ajax({
url: "checker.php?file=<?php echo session_id() ?>",
success:function(data){
$("#progress").html('<div class="bar" style="width:' + data.percent + '%"></div>');
$("#message").html(data.message);
// If the process is completed, we should stop the checking process.
if (data.percent == 100) {
window.clearInterval(timer);
timer = window.setInterval(completed, 1000);
}
}
});
}
function completed() {
$("#message").html("Completed");
window.clearInterval(timer);
}
// When the document is ready
$(document).ready(function(){
// Trigger the process in web server.
$.ajax({url: "process.php"});
// Refresh the progress bar every 1 second.
timer = window.setInterval(refreshProgress, 1000);
});
</script>
</body>
</html>
checker.php
<?php
// The file has JSON type.
header('Content-Type: application/json');
// Prepare the file name from the query string.
// Don't use session_start here. Otherwise this file will be only executed after the process.php execution is done.
$file = str_replace(".", "", $_GET['file']);
$file = "tmp/" . $file . ".txt";
// Make sure the file is exist.
if (file_exists($file)) {
// Get the content and echo it.
$text = file_get_contents($file);
echo $text;
// Convert to JSON to read the status.
$obj = json_decode($text);
// If the process is finished, delete the file.
if ($obj->percent == 100) {
unlink($file);
}
} else {
echo json_encode(array("percent" => null, "message" => null));
}
process.php
<?php
// Start the session.
session_start();
// The example total processes.
$total = 20;
// The array for storing the progress.
$arr_content = array();
// Loop through process
for ($i = 1; $i <= $total; $i++) {
// Calculate the percentation
$percent = intval($i / $total * 100);
// Put the progress percentage and message to array.
$arr_content['percent'] = $percent;
$arr_content['message'] = $i . " row(s) processed.";
// Write the progress into file and serialize the PHP array into JSON format.
// The file name is the session id.
file_put_contents("tmp/" . session_id() . ".txt", json_encode($arr_content));
// Sleep one second so we can see the delay
sleep(1);
}
只需在CI上编写它并创建一个tmp文件夹，然后在脚本中指向它的路径即可.祝你好运！
Just that you write it on the CI and create a tmp folder, and you point a path to it in script. Good luck!
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