<?php

    // Load the stamp and the photo to apply the watermark to

    $stamp = imagecreatefrompng('text.png');

    $im = imagecreatefrompng('original.png');

    // Set the margins for the stamp and get the height/width of the stamp image

    $marge_right = 10;

    $marge_bottom = 10;

    $sx = imagesx($stamp);

    $sy = imagesy($stamp);

    // Copy the stamp image onto our photo using the margin offsets and the photo 

    // width to calculate positioning of the stamp. 

    imagecopy($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp));

    // Output and free memory

    header('Content-type: image/png');

    imagepng($im);

    imagedestroy($im);

?>

    $stamp = imagecreatefrompng('text.png');

    $im = imagecreatefrompng('original.png');

오리지날 이미지와 text.png 이미지가 겹쳐져 워터마크 기능이 됩니다.