<?php
session_start();
header("Content-type: text/html; charset=utf-8");
include_once 'Upload.class.php';
upload::setVerifyBySession();
if($_POST["sbt"])
{
$upload = new upload("pic", $_POST["verify"]);
$picName = $upload->uploadFile();
}
?>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<head>
<title>多檔案上傳</title>
</head>
<body>
<a href="#" onclick="add()">增加圖檔上傳窗</a>
<form action="" method="post" enctype="multipart/form-data" onSubmit="return btn();">
<div id="inputArea">
<input type="file" name="pic[]" />
</div>
<input type="submit" name="sbt" value="上傳" />
<input type="hidden" name="verify" value='<?php echo $_SESSION["verify"] ?>' />
</form>
<script type="text/javascript">
function btn()
{
var flag = false;
var objs = document.getElementsByName("pic[]");
for(var i=0; i < objs.length; i++)
{
var obj = objs[i];
if(obj.value != "")
{
flag = true;
}
}
return flag;
}
function add()
{
var input = document.getElementById("inputArea");
input.innerHTML += "<br /><input type=\"file\" name=\"pic[]\" />";
}
</script>
</body>
</html> Upload.class.php
<?php
/**
* 圖檔上傳類
*/
class upload
{
private $verify; //用于方式重新整理導緻重複上傳的比較參數
private $dir; //上傳目錄
private $img; //上傳的圖檔資訊
public function __construct($inputName, $verify)
{
session_start();
$this->img = $_FILES[$inputName];
$this->verify = $verify;
$this->dir = dirname(__FILE__) . "\uploads";
}
/**
* 設定防止重複重新整理送出的比較參數Verify
*/
public static function setVerifyBySession()
{
if(!isset($_SESSION["verify"]))
{
$_SESSION["verify"] = time();
}
}
/**
* 上傳圖檔主邏輯
*/
public function uploadFile()
{
self::repeatSubmit();
self::directoryExist();
$i = 0;
foreach ($this->img["tmp_name"] as $tmp)
{
$filename = explode(".", $this->img["name"][$i++]);
$filename = self::setName($filename);
if($tmp)
{
$savepath = $this->dir . "\\" . $filename;
$stats = move_uploaded_file($tmp, $savepath);
self::showPic($stats, $filename);
}
}
}
/**
* 判斷是否重複送出
*/
private function repeatSubmit()
{
if($this->verify != $_SESSION["verify"])
{
echo "<script>alert('請勿重複送出！'); window.location.href = './'</script>";
exit();
}
else
{
unset($_SESSION["verify"]);
}
}
/**
* 判斷上傳目錄是否存在
*/
private function directoryExist()
{
if(!file_exists($this->dir))
{
mkdir($this->dir);
}
}
/**
* 給上傳檔案重新命名
*/
private function setName($f)
{
$name = md5($f[0] . date("mdHis") . rand(1, time()));
return $name . "." . $f[1];
}
/**
* 上傳成功後，顯示上傳圖檔
*/
private function showPic($stats, $filename)
{
if($stats)
{
echo "<img src = 'uploads/$filename' />" . $filename . "<br>";
}
}
}
?> ![javascript的for (var i in data)慎用javascript中的for (var i in data)謹慎用[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)