<?php

function watermarkImage ($SourceFile, $WaterMarkText, $DestinationFile) {
//$SourceFile is source of the image file to be watermarked
//$WaterMarkText is the text of the watermark
//$DestinationFile is the destination location where the watermarked images will be placed

//Delete if destinaton file already exists
@unlink($DestinationFile);

//This is the vertical center of the image
$top = getimagesize($SourceFile);
$top = $top[1]/2;
list($width, $height) = getimagesize($SourceFile);

$image_p = imagecreatetruecolor($width, $height);

$image = imagecreatefromjpeg($SourceFile);

imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width, $height);

//Path to the font file on the server. Do not miss to upload the font file
$font = ‘arial.ttf’;

//Font sie
$font_size = 16;

//Give a white shadow
$white = imagecolorallocate($image_p, 255, 255, 255);
imagettftext($image_p, $font_size, 0, 10, $top, $white, $font, $WaterMarkText);

//Print in black color
$black = imagecolorallocate($image_p, 0, 0, 0);
imagettftext($image_p, $font_size, 0, 8, $top-1, $black, $font, $WaterMarkText);

if ($DestinationFile”) {

imagejpeg ($image_p, $DestinationFile, 100);

} else {

header(‘Content-Type: image/jpeg’);

imagejpeg($image_p, null, 100);

};

imagedestroy($image);

imagedestroy($image_p);

};

?>

<?php

$SourceFile = ‘image.jpg’;//Source image
$DestinationFile = ‘watermarked/image.jpg’;//Destination path
$WaterMarkText = ‘www.phpHelp.co’;//Watermark text

//Call the function to watermark the image
watermarkImage ($SourceFile, $WaterMarkText, $DestinationFile);

//Display watermarked image if desired
if(file_exists($DestinationFile)){
echo “”;
echo “The image has been watermarked at ‘”.$DestinationFile.”‘”;
}
?>

Note:

This code is being provided to you as a help by http://www.phpHelp.co without any warranty and liability
Place all the files in a folder on web server.
Do not forget to upload the font file – arial.ttf.
Once the image is watermarked, it will be placed in the folder named ‘watermarked’.
You might need to give ‘write permission’ or ’777 permission’ to the folder named ‘watermarked’ as the new watermarked image will be written in this folder.

Source:
http://addr.pk/a730e
AND
http://phphelp.co/2012/06/01/how-to-watermark-an-image-in-php/

<?php

function watermarkImage ($SourceFile, $WaterMarkText, $DestinationFile) {
//$SourceFile is source of the image file to be watermarked
//$WaterMarkText is the text of the watermark
//$DestinationFile is the destination location where the watermarked images will be placed

//Delete if destinaton file already exists
@unlink($DestinationFile);

//This is the vertical center of the image
$top = getimagesize($SourceFile);
$top = $top[1]/2;
list($width, $height) = getimagesize($SourceFile);

$image_p = imagecreatetruecolor($width, $height);

$image = imagecreatefromjpeg($SourceFile);

imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width, $height);

//Path to the font file on the server. Do not miss to upload the font file
$font = ‘arial.ttf’;

//Font sie
$font_size = 16;

//Give a white shadow
$white = imagecolorallocate($image_p, 255, 255, 255);
imagettftext($image_p, $font_size, 0, 10, $top, $white, $font, $WaterMarkText);

//Print in black color
$black = imagecolorallocate($image_p, 0, 0, 0);
imagettftext($image_p, $font_size, 0, 8, $top-1, $black, $font, $WaterMarkText);

if ($DestinationFile”) {

imagejpeg ($image_p, $DestinationFile, 100);

} else {

header(‘Content-Type: image/jpeg’);

imagejpeg($image_p, null, 100);

};

imagedestroy($image);

imagedestroy($image_p);

};

?>

<?php

$SourceFile = ‘image.jpg’;//Source image
$DestinationFile = ‘watermarked/image.jpg’;//Destination path
$WaterMarkText = ‘www.phpHelp.co’;//Watermark text

//Call the function to watermark the image
watermarkImage ($SourceFile, $WaterMarkText, $DestinationFile);

//Display watermarked image if desired
if(file_exists($DestinationFile)){
echo “”;
echo “The image has been watermarked at ‘”.$DestinationFile.”‘”;
}
?>

Note:

This code is being provided to you as a help by http://www.phpHelp.co without any warranty and liability
Place all the files in a folder on web server.
Do not forget to upload the font file – arial.ttf.
Once the image is watermarked, it will be placed in the folder named ‘watermarked’.
You might need to give ‘write permission’ or ’777 permission’ to the folder named ‘watermarked’ as the new watermarked image will be written in this folder.

Source:
http://addr.pk/a730e
AND
http://phphelp.co/2012/06/01/how-to-watermark-an-image-in-php/