function upload($uploadfile,$watermark=1,$watertype=1,$content){

foreach($uploadfile['name'] as $key=>$name) {??//多文件上傳函數(shù)

uploadall($uploadfile,$key,$watermark,$watertype,$content);

}

}

function uploadall($uploadfile,$i,$watermark,$watertype,$content) {

$watermark=$watermark;???????? //是否附加水印(1為加水印,其他為不加水印);

$watertype=$watertype;???????? //水印類型(1為文字,2為圖片)

$watercontent=$content;???????? //水印的內(nèi)容

if(empty($uploadfile['name'][$i])) {

die("未選擇文件上傳");

}

if($uploadfile['error'][$i] == 2) {???//驗證html判斷結(jié)果

die("上傳的文件太大了");

}

$allow_filemaxsize = 2048000;????// 2m

$filesize = $uploadfile['size'][$i];

if($filesize > $allow_filemaxsize) {

die("上傳的文件太大了");

}

$allow_filetypes = array("jpeg", "gif", "png","jpg","pjpeg");//允許上傳的文件統(tǒng)一資源類型 mimetype

$allow = false;????????//默認(rèn)都不允許

$mimetype = $uploadfile['type'][$i];??//上傳文件的mime文件類型

foreach($allow_filetypes as $t) {

if(strpos($mimetype, $t) !== false) {

$allow = true;??????//找到了符合上傳條件的文件類型

break;

}

}

if($allow == false) {

die("上傳的文件類型不被允許");

}

$result = is_uploaded_file($uploadfile['tmp_name'][$i]);???//判斷是否為上傳動作產(chǎn)生的

if(!$result) {

die("上傳的文件有誤");

}

$uploaddir = "img/";???????//上傳文件保存目錄

if(!file_exists($uploaddir)) mkdir($uploaddir, 0777, true);//若上傳保存目錄不存在，則遞歸創(chuàng)建

/**重命名文件**/

$filetype = explode(".", $uploadfile['name'][$i]);

$filetype = array_pop($filetype);

$uploadfilename = time().".".$filetype;

$_session['filename'] = $uploadfilename;

//end

$result = move_uploaded_file($uploadfile['tmp_name'][$i], $uploaddir.$uploadfilename);

if($result) {

echo? "文件上傳成功";

}else{

switch($uploadfile['error'][$i]) {

case 1:return "上傳的文件超出了php.ini中設(shè)定的最大值";break;

case 2:return "上傳的文件超出了html中設(shè)定的最大值";break;

case 3:return "文件只有部分被上傳";break;

case 4;return "沒有文件被上傳";break;

default:die("文件上傳失敗");

}

}

if($watermark==1) {

$iinfo=getimagesize($uploaddir.$uploadfilename);??//獲取圖片的相關(guān)信息，得到數(shù)組

$nimage=imagecreatetruecolor($iinfo[0],$iinfo[1]);

$white=imagecolorallocate($nimage,255,255,255); //設(shè)置背景顏色為白色

$black=imagecolorallocate($nimage,0,0,0);??//設(shè)置背景顏色為黑色

$red=imagecolorallocate($nimage,255,0,0);??//設(shè)置背景顏色為紅色

imagefill($nimage,0,0,$white);?????//背景填充為白色

switch ($iinfo[2]) {

case 1:

$simage =imagecreatefromgif($uploaddir.$uploadfilename);

break;

case 2:

$simage =imagecreatefromjpeg($uploaddir.$uploadfilename);

break;

case 3:

$simage =imagecreatefrompng($uploaddir.$uploadfilename);

break;

case 6:

$simage =imagecreatefromwbmp($uploaddir.$uploadfilename);

break;

default:

die("不支持的文件類型");

exit;

}

imagecopy($nimage,$simage,0,0,0,0,$iinfo['0'],$iinfo['1']);

switch($watertype) {

case 1:???????????? //加水印字符串

imagestring($nimage,5,$iinfo['0']/2-50,$iinfo['1']-30,$watercontent,$black);

break;

case 2:????????????//加水印圖片

$simage1 =imagecreatefromgif($watercontent);

$size = getimagesize($watercontent);

imagecopy($nimage,$simage1,$iinfo['0']/2+50,$iinfo['1']-100,0,0,$size[0],$size[1]);

imagedestroy($simage1);

break;

}

switch ($iinfo[2]) {

case 1:

imagejpeg($nimage, $uploaddir.$uploadfilename);?//將圖像$nimage以$destination文件名創(chuàng)建一個jpeg的格式文件

break;

case 2:

imagejpeg($nimage, $uploaddir.$uploadfilename);

break;

case 3:

imagepng($nimage, $uploaddir.$uploadfilename);

break;

case 6:

imagewbmp($nimage, $uploaddir.$uploadfilename);

break;

}

imagedestroy($nimage); ???//覆蓋原上傳文件

imagedestroy($simage);

}

}

if(@$_get['act'] == "insert") {????//未作參數(shù)校驗

//該函數(shù)的四個參數(shù)分別是：上傳控件的name值；是否加水印(1為加，其他數(shù)字為不佳)；

//水印的類型(1為字符串，2為圖片)；水印的內(nèi)容,字符串時寫數(shù)據(jù)，圖片時寫圖片的地址；

$picture = upload($_files['picture'],1,2,"img/watermark.gif");//上傳文件，并返回上傳后的文件路徑名

}

?>

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