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16 years ago
Here is some simple code for resizing an uploaded image and inserting a watermark (from a 24-bit PNG) on the bottom right of it.  In this case, the water mark was a diagnol band that said "SOLD" across it.  The code that verifies the uploaded image is the correct type has been omitted:

<?PHP
//Load and resize the image
$uploaded = imagecreatefromjpeg($_FILES['file']['tmp_name']);
$image = imagecreatetruecolor(IMAGE_WIDTH, IMAGE_HEIGHT);
imagecopyresampled($image, $uploaded, 0, 0, 0, 0, IMAGE_WIDTH, IMAGE_HEIGHT, imagesx($uploaded), imagesy($uploaded));    
imagealphablending($image,true); //allows us to apply a 24-bit watermark over $image

//Load the sold watermark
$sold_band = imagecreatefrompng('../images/sold_band.png');
imagealphablending($sold_band,true);

//Apply watermark and save
$image = image_overlap($image, $sold_band);
imagecopy($image,$sold_band,IMAGE_WIDTH - SOLD_WIDTH,IMAGE_HEIGHT - SOLD_HEIGHT,0,0,SOLD_WIDTH,SOLD_HEIGHT);
$success = imagejpeg($image,'../images/sold/'.$id.'.jpg',85);

imagedestroy($image);
imagedestroy($uploaded);
imagedestroy($sold_band);
?>
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