PHP code to add watermark to multiple image uploads

//php watermark function
function imageWaterMark($groundImage,$waterPos=0,$waterImage="",$waterText="",$textFont=5,$textColor="#FF0000 ")
{
$isWaterImage = FALSE;
$formatMsg = "This file format is not supported yet. Please use image processing software to convert the image to GIF, JPG, or PNG format.";
//Read the watermark file
if(!empty($waterImage) && file_exists($waterImage))
{
$isWaterImage = TRUE;
$water_info = getimagesize($waterImage); //What you get is an array
$water_w = $water_info[0];//Get the width of the watermark image
$water_h = $water_info[1];//Get the height of the watermark image
switch($water_info[2])//Get the format of the watermark image
{
case 1:$water_im = imagecreatefromgif($waterImage);break; //Convert the image into an encoding process that can be recognized by PHP
case 2:$water_im = imagecreatefromjpeg($waterImage);break; //Convert the image into PHP-recognizable encoding process
case 3:$water_im = imagecreatefrompng($waterImage);break; //Convert the image into PHP-recognizable encoding process
default:die($formatMsg);
}
}
//Read Get the background image
if(!empty($groundImage) && file_exists($groundImage))
{
$ground_info = getimagesize($groundImage);
$ground_w = $ground_info[0];//Get the width of the background image
$ ground_h = $ground_info[1]; //Get the height of the background image
switch($ground_info[2]) //Get the format of the background image
{
case 1:$ground_im = imagecreatefromgif($groundImage);break;
case 2:$ground_im = imagecreatefromjpeg($groundImage);break;
case 3:$ground_im = imagecreatefrompng($groundImage);break;
default:die($formatMsg);
}
}
else
{
die("required The watermarked picture does not exist! ");
}
//Watermark position
if($isWaterImage)//Picture watermark
{
$w = $water_w;
$h = $water_h;
$label = "Picture";
}
else/ /Text watermark
{
$temp = imagettfbbox(ceil($textFont*2.5),0,"c:/windows/fonts/stcaiyun.ttf",$waterText);//Get the range of text using TrueType fonts
$ w = $temp[2] - $temp[6];
$h = $temp[3] - $temp[7];
unset($temp);
$label = "text area";
}
if ( ($ground_w<$w) || ($ground_h<$h) )
{
echo "The length or width of the image that needs to be watermarked is smaller than the watermark ".$label.", and the watermark cannot be generated! ";
return;
}
switch($waterPos)
{
case 0://random
$posX = rand(0,($ground_w - $w));
$posY = rand(0,($ground_h - $h));
break;
case 1://1 means top left
$posX = 0;
$posY = 0;
break;
case 2://2 means top center
$posX = ($ ground_w - $w) / 2;
$posY = 0;
break;
case 3://3 is the top right
$posX = $ground_w - $w;
$posY = 0;
break;
case 4 ://4 means center left
$posX = 0;
$posY = ($ground_h - $h) / 2;
break;
case 5://5 means center center
$posX = ($ground_w - $w ) / 2;
$posY = ($ground_h - $h) / 2;
break;
case 6://6 is the middle right
$posX = $ground_w - $w;
$posY = ($ground_h - $h) / 2;
break;
case 7://7 is bottom left
$posX = 0;
$posY = $ground_h - $h;
break;
case 8://8 is bottom center
$posX = ($ground_w - $w) / 2;
$posY = $ground_h - $h;
break;
case 9://9 is bottom right
$posX = $ground_w - $w;
 $posY = $ground_h - $h;
break;
default://random
$posX = rand(0,($ground_w - $w));
$posY = rand(0,($ground_h - $h) ; posY, 0, 0, $water_w,$water_h);//Copy watermark to target file
}
else//Text watermark
{
if( !empty($textColor) && (strlen($textColor)==7) )
{
$R = hexdec(substr($textColor,1,2));
$G = hexdec(substr($textColor,3,2));
$B = hexdec(substr($textColor,5) );
}
else
{
die("The watermark text color format is incorrect!");
}
imagestring ( $ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B));
}
//The image after generating the watermark
 @unlink($groundImage);
switch($ground_info[2])//Get the format of the background image
{
case 1:imagegif($ground_im,$groundImage);break; //Create an image in gif format
case 2 :imagejpeg($ground_im,$groundImage);break; //Create a picture in jpeg format
case 3:imagepng($ground_im,$groundImage);break; //Create a picture in png format
default:die($errorMsg);
}
//Release memory
if(isset($water_info)) unset($water_info);
if(isset($water_im)) imagedestroy($water_im);
unset($ground_info);
imagedestroy($ground_im) ;
}
?>

php image upload code:
for ($i=0;$i {
$upfile="./img/".($i+1).".png";//Change the path here to yours
if(move_uploaded_file($_FILES['userfile']['tmp_name'] [$i],$upfile)){
imageWaterMark($upfile,9,"./shuiyin.png","Made By Chenduan",5,"#FF0000");
/*
* Function: Image watermark ( Watermark supports pictures or text)
* imageWaterMark($groundImage,$waterPos=0,$waterImage="",$waterText="",$textFont=5,$textColor="#FF0000")
* Parameters:
* $ groundImage background image, that is, the image that needs to be watermarked, currently only supports GIF, JPG, and PNG formats;
* $waterPos watermark position, there are 10 states, 0 is a random position;
* 1 means top left, 2 means top center, 3 means top is on the right;
* 4 is middle on the left, 5 is middle on the center, 6 is middle on the right;
* 7 is bottom on the left, 8 is bottom on the center, 9 is bottom on the right;
* $waterImage picture Watermark, that is, the image used as a watermark, currently only supports GIF, JPG, and PNG formats;
* $waterText text watermark, that is, text is used as a watermark, supports ASCII code, does not support Chinese;
* $textFont text size, value is 1 , 2, 3, 4 or 5, the default is 5;
* $textColor text color, the value is a hexadecimal color value, the default is #FF0000 (red);
*/
echo "";
echo "No.".($i+1)."Picture operation successful";
}
else{
echo "No.". ($i+1)."Unable to upload picture";
}
}
?>