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php上傳圖片并給圖片打上透明水印

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Jun 08, 2016 pm 05:26 PM

quot

?代碼如下

復(fù)制代碼

$im = imagecreatefromjpeg($_file["upload"]["tmp_name"]); //你要打水例子的圖片
$watermark = imagecreatefrompng("Smiley.png"); //水印圖的路徑
$im_x = imagesx($im);
$im_y = imagesy($im);
$w_x = imagesx($watermark);
$w_y = imagesy($watermark);
imagecopy($im,$watermark ,$im_x-$w_x,$im_y-$w_y,0,0,$w_x,$w_y);
imagejpeg($im); //可加上路徑以保存有水印的圖
//可以利用type判斷下圖片類型
//switch($_file["upload"]["type"])
//case:1
//然后用不同的函數(shù)
//imagejpeg()對(duì)應(yīng)jpeg
//imagegif()對(duì)應(yīng)gif
//imagepng()對(duì)應(yīng)png
imagedestroy($im);

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