php 圖片上傳加水印(自動增加水印)/*這是一款完美的php文件上傳代碼，圖片上傳成功后并自動給圖片增加上水印，這樣很好的快速的提高的了要手工一張張增加水印效果。

php教程 圖片上傳加水印(自動增加水印)
/*
這是一款完美的php文件上傳代碼，圖片上傳成功后并自動給圖片增加上水印，這樣很好的快速的提高的了要手工一張張增加水印效果。
*/

?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(@$_get['act'] == "insert") {????//未作參數(shù)校驗
?????//該函數(shù)的四個參數(shù)分別是：上傳控件的name值；是否加水?。?為加，其他數(shù)字為不佳）；
?????//水印的類型（1為字符串，2為圖片）；水印的內(nèi)容,字符串時寫數(shù)據(jù)，圖片時寫圖片的地址；
?$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

}

?>

上傳代碼

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產(chǎn)品圖片：	???? ???