PHP ?? ??? ?? ??
??? ?? ??? ???? ???? ??? ???? ?? ????? ??? ????? ??? ??? ?? ? ??? ???? ???? ???? ??? ???? ?? ????. ??? ??? ?? ??? ?????? ??? ????? ????? ???? ? ???? Product Wang? ?? ???????. ??? ??? ?? ???? ?? ?? ???? ????.
PHP 5.4 ???? ?? ??? ?? ??? ??????? ?? ?? ?? ??? ???? ????. 5.4?? session.upload_progress? ??? ??? ???????. ??? ?? ?? ??? ?? ??? ??????? php.ini?? ??? ?????? ?? ???. php.ini??.
??: ? ?? ????? ??? javascript ? ajax? ?? ?? ??? ?????.
php.ini ??? ???? ???? ???? ???.
| 配置項(xiàng) | 說明 |
|---|---|
| session.upload_progress.enabled | 是否啟用上傳進(jìn)度報告(默認(rèn)開啟) 1為開啟，0為關(guān)閉 |
| session.upload_progress.cleanup | 是否在上傳完成后及時刪除進(jìn)度數(shù)據(jù)(默認(rèn)開啟, 推薦開啟) |
| session.upload_progress.prefix[=upload_progress_] | 進(jìn)度數(shù)據(jù)將存儲在_SESSION[session.upload_progress.prefix . _POST[session.upload_progress.name]] |
| session.upload_progress.name[=PHP_SESSION_UPLOAD_PROGRESS] | 如果_POST[session.upload_progress.name]沒有被設(shè)置, 則不會報告進(jìn)度. |
| session.upload_progress.freq[=1%] | 更新進(jìn)度的頻率(已經(jīng)處理的字節(jié)數(shù)), 也支持百分比表示’%’. |
| session.upload_progress.min_freq[=1.0] | 更新進(jìn)度的時間間隔(秒級) |
??? ????? ??? ?? ?? ?? ??? ?? ??? ??? ? ????. ???? ??? ?? ??? ??? ??? ?????.
$_SESSION["upload_progress_test"] = array( //請求時間 "start_time" => 1234567890, // 上傳文件總大小 "content_length" => 57343257, //已經(jīng)處理的大小 "bytes_processed" => 453489, //當(dāng)所有上傳處理完成后為TRUE，未完成為false "done" => false, "files" => array( 0 => array( //表單中上傳框的名字 "field_name" => "file1", //上傳文件的名稱 "name" => "test1.avi", //緩存文件，上傳的文件即保存在這里 "tmp_name" => "/tmp/phpxxxxxx", //文件上傳的錯誤信息 "error" => 0, //是否上傳完成，當(dāng)這個文件處理完成后會變成TRUE "done" => true, //這個文件開始處理時間 "start_time" => 1234567890, //這個文件已經(jīng)處理的大小 "bytes_processed" => 57343250, ), 1 => array( "field_name" => "file2", "name" => "test2.avi", "tmp_name" => NULL, "error" => 0, "done" => false, "start_time" => 1234567899, "bytes_processed" => 54554, ), ) );
? ??? ?? ??? ?? ??? ??? ????, ??? ??? ??? true???. ???? jQuery AJAX ??? ???? ?? ??? ?? ????? ?????.
?? ??? type=hidden?? ?? ??? ???? ?? ?? ?? custom???(? ?? ??????? ????? ?? ?? ?? ???? ?? ????).
<form id="upload-form" action="upload.php" method="POST" enctype="multipart/form-data" style="margin:15px 0" target="hidden_iframe">
<input type="hidden" name="<?php echo ini_get("session.upload_progress.name"); ?>" value="test" />
<p><input type="file" name="file1" /></p>
<p><input type="submit" value="Upload" /></p>
</form>
<div id="progress" class="progress" style="margin-bottom:15px;display:none;">
<div class="label">0%</div>
</div>??? ??? ID? ??? div? ????? ???? ??? ???? ?????. ??? js? setTimeout()? ???? ????? ajax? ???? ?? ??? ???? ??, ?? ??? ?? ???? ???? ?????.
<script src="../jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
function fetch_progress(){
$.get('progress.php',{ '<?php echo ini_get("session.upload_progress.name"); ?>' : 'test'}, function(data){
var progress = parseInt(data);
$('#progress .label').html(progress + '%');
if(progress < 100){
setTimeout('fetch_progress()', 100); //當(dāng)上傳進(jìn)度小于100%時，顯示上傳百分比
}else{
$('#progress .label').html('完成!'); //當(dāng)上傳進(jìn)度等于100%時，顯示上傳完成
}
}, 'html');
}
$('#upload-form').submit(function(){
$('#progress').show();
setTimeout('fetch_progress()', 100);//每0.1秒執(zhí)行一次fetch_progress()，查詢文件上傳進(jìn)度
});
</script>? ??? JQ? ajax? ?? 0.1??? ?? ??? ?? ??? ?????. ??? div ??? ???? ?????.
upload.php? ?? ???? ???? ?? ??? ? ???? ???? ???. Progress.php? ??? ??? ???? ???? ???? ?????.
????? ?? ???? ?? ??? ???? ????. ??? ??? ?? upload.php:
<?php
if(is_uploaded_file($_FILES['file1']['tmp_name'])){ //判斷是否是上傳文件
//unlink($_FILES['file1']['tmp_name']);
move_uploaded_file($_FILES['file1']['tmp_name'], "./{$_FILES['file1']['name']}"); //將緩存文件移動到指定位置
}
?>?? Progress.php? ??? ???.
<?php
/*
開啟session。請注意在session_start()之前，請不要有想瀏覽器輸出內(nèi)容的動作，否則可能引起錯誤。
*/
session_start();
//ini_get()獲取php.ini中環(huán)境變量的值
$i = ini_get('session.upload_progress.name');
//ajax中我們使用的是get方法，變量名稱為ini文件中定義的前綴 拼接 傳過來的參數(shù)
$key = ini_get("session.upload_progress.prefix") . $_GET[$i];
//判斷 SESSION 中是否有上傳文件的信息
if (!empty($_SESSION[$key])) {
//已上傳大小
$current = $_SESSION[$key]["bytes_processed"];
//文件總大小
$total = $_SESSION[$key]["content_length"];
//向 ajax 返回當(dāng)前的上傳進(jìn)度百分比。
echo $current < $total ? ceil($current / $total * 100) : 100;
}else{
echo 100;
}
?>??? ?? ?? ??? ???????. ?????? ???? ?? ?? ??? ??? ?? ? ????!
