用來給圖片加浮水印的PHP類

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上載者:User

複製代碼 代碼如下:<?php
/*
* 功能:PHP圖片浮水印 (浮水印支援圖片或文字)
* 參數:
* $groundImage 背景圖片,即需要加浮水印的圖片,暫只支援GIF,JPG,PNG格式;
* $waterPos 浮水印位置,有10種狀態,0為隨機位置;
* 1為頂端居左,2為頂端置中,3為頂端居右;
* 4為中部居左,5為中部置中,6為中部居右;
* 7為底端居左,8為底端置中,9為底端居右;
* $waterImage 圖片浮水印,即作為浮水印的圖片,暫只支援GIF,JPG,PNG格式;
* $waterText 文字浮水印,即把文字作為為浮水印,支援ASCII碼,不支援中文;
* $textFont 文字大小,值為1、2、3、4或5,預設為5;
* $textColor 文字顏色,值為十六進位顏色值,預設為#FF0000(紅色);
*
* 注意:Support GD 2.0,Support FreeType、GIF Read、GIF Create、JPG 、PNG
* $waterImage 和 $waterText 最好不要同時使用,選其中之一即可,優先使用 $waterImage。
* 當$waterImage有效時,參數$waterString、$stringFont、$stringColor均不生效。
* 加浮水印後的圖片的檔案名稱和 $groundImage 一樣。
* 作者:longware @ 2004-11-3 14:15:13
*/
function imageWaterMark($groundImage,$waterPos=0,$waterImage=”",$waterText=”",$textFont=5,$textColor=”#FF0000″)
{
$isWaterImage = FALSE;
$formatMsg = “暫不支援該檔案格式,請用圖片處理軟體將圖片轉換為GIF、JPG、PNG格式。”;

//讀取浮水印檔案
if(!emptyempty($waterImage) && file_exists($waterImage))
{
$isWaterImage = TRUE;
$water_info = getimagesize($waterImage);
$water_w = $water_info[0];//取得浮水印圖片的寬
$water_h = $water_info[1];//取得浮水印圖片的高

switch($water_info[2])//取得浮水印圖片的格式
{
case 1:$water_im = imagecreatefromgif($waterImage);break;
case 2:$water_im = imagecreatefromjpeg($waterImage);break;
case 3:$water_im = imagecreatefrompng($waterImage);break;
default:die($formatMsg);
}
}

//讀取背景圖片
if(!emptyempty($groundImage) && file_exists($groundImage))
{
$ground_info = getimagesize($groundImage);
$ground_w = $ground_info[0];//取得背景圖片的寬
$ground_h = $ground_info[1];//取得背景圖片的高

switch($ground_info[2])//取得背景圖片的格式
{
case 1:$ground_im = imagecreatefromgif($groundImage);break;
case 2:$ground_im = imagecreatefromjpeg($groundImage);break;
case 3:$ground_im = imagecreatefrompng($groundImage);break;
default:die($formatMsg);
}
}
else
{
die(”需要加浮水印的圖片不存在!”);
}

//浮水印位置
if($isWaterImage)//圖片浮水印
{
$w = $water_w;
$h = $water_h;
$label = “圖片的”;
}
else//文字浮水印
{
$temp = imagettfbbox(ceil($textFont*5),0,”./cour.ttf”,$waterText);//取得使用 TrueType 字型的文本的範圍
$w = $temp[2] - $temp[6];
$h = $temp[3] - $temp[7];
unset($temp);
$label = “文字地區”;
}
if( ($ground_w<$w) || ($ground_h<$h) )
{
echo “需要加浮水印的圖片的長度或寬度比浮水印”.$label.”還小,無法產生浮水印!”;
return;
}
switch($waterPos)
{
case 0://隨機
$posX = rand(0,($ground_w - $w));
$posY = rand(0,($ground_h - $h));
break;
case 1://1為頂端居左
$posX = 0;
$posY = 0;
break;
case 2://2為頂端置中
$posX = ($ground_w - $w) / 2;
$posY = 0;
break;
case 3://3為頂端居右
$posX = $ground_w - $w;
$posY = 0;
break;
case 4://4為中部居左
$posX = 0;
$posY = ($ground_h - $h) / 2;
break;
case 5://5為中部置中
$posX = ($ground_w - $w) / 2;
$posY = ($ground_h - $h) / 2;
break;
case 6://6為中部居右
$posX = $ground_w - $w;
$posY = ($ground_h - $h) / 2;
break;
case 7://7為底端居左
$posX = 0;
$posY = $ground_h - $h;
break;
case 8://8為底端置中
$posX = ($ground_w - $w) / 2;
$posY = $ground_h - $h;
break;
case 9://9為底端居右
$posX = $ground_w - $w;
$posY = $ground_h - $h;
break;
default://隨機
$posX = rand(0,($ground_w - $w));
$posY = rand(0,($ground_h - $h));
break;
}

//設定映像的混色模式
imagealphablending($ground_im, true);

if($isWaterImage)//圖片浮水印
{
imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷貝浮水印到目標檔案
}
else//文字浮水印
{
if( !emptyempty($textColor) && (strlen($textColor)==7) )
{
$R = hexdec(substr($textColor,1,2));
$G = hexdec(substr($textColor,3,2));
$B = hexdec(substr($textColor,5));
}
else
{
die(”浮水印文字顏色格式不正確!”);
}
imagestring ( $ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B));
}

//產生浮水印後的圖片
@unlink($groundImage);
switch($ground_info[2])//取得背景圖片的格式
{
case 1:imagegif($ground_im,$groundImage);break;
case 2:imagejpeg($ground_im,$groundImage);break;
case 3:imagepng($ground_im,$groundImage);break;
default:die($errorMsg);
}

//釋放記憶體
if(isset($water_info)) unset($water_info);
if(isset($water_im)) imagedestroy($water_im);
unset($ground_info);
imagedestroy($ground_im);
}
//—————————————————————————————
$id=$_REQUEST['id'];
$num = count($_FILES['userfile']['name']);
print_r($_FILES['userfile']);
print_r($_FILES['userfile']['name']);

echo $num;
echo “<bR>”;
if(isset($id)){
for($i=0;$i<$id;$i++){

if(isset($_FILES) && !emptyempty($_FILES['userfile']) && $_FILES['userfile']['size']>0)
{
$uploadfile = “./”.time().”_”.$_FILES['userfile'][name][$i];
echo “<br>”;
echo $uploadfile;
if (copy($_FILES['userfile']['tmp_name'][$i], $uploadfile))
{
echo “OK<br>”;

//文字浮水印
//imageWaterMark($uploadfile,5,”",”HTTP://www.lvye.info”,5,”#cccccc“);

//圖片浮水印
$waterImage=”logo_ok1.gif”;//浮水印圖片路徑
imageWaterMark($uploadfile,9,$waterImage);

echo “<img src=\”".$uploadfile.”\” border=\”0\”>”;
}
else
{
echo “Fail<br>”;
}
}
}
}

?>
<form enctype=”multipart/form-data” method=”POST”>
<?php
for($a=0;$a<$id;$a++){
echo “檔案: <input name=\”userfile[]\” type=\”file\”><br>”;

}
?>
<input type=”submit” value=”上傳”>
</form>

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