php上传文件并显示上传进度的方法_PHP教程

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$prefix = ini_get('session.upload_progress.prefix');

$name = ini_get('session.upload_progress.name');

$key = $prefix . $name;

session_start();

if (isset($_POST['get_info'])) {

$logo = $prefix . $_POST['logo'];

exit(json_encode($_SESSION[$logo]));

} elseif ($_POST) {

echo '<script>var finashed = true;</script>';

}

?>

<script></script>

var sto = null;

var progress = null;

function getUploadInfo()

{

$.post("index.php", {"get_info": 1, "logo": "test"}, function(data)

{

data = eval("(" + data + ")");

progress = parseInt(parseInt(data.bytes_processed) * 10000 / parseInt(data.content_length)) / 100 + "%";

document.getElementById("show_info_div").innerHTML = progress;

sto = setTimeout("getUploadInfo()", 1000);

});

}

if (typeof(finashed) !== "undefined")

{

document.getElementById("show_info_div").innerHTML = "100.00% (上传成功！)";

}