comdex

I have a PSD file of a t-shirt template with a design placed over the t-shirt. The design is in its own layer. How can I replace the image with another design that is not currently in the PSD file? I use this code to find the layer containing the design image, but how can I replace the image inside the layer? // Load the PSD file $psd = new Imagick(realpath("130.psd")); // Export layers foreach ($psd as $no => $layer) { // Get the name of this layer $imageProperties = $layer->getimageproperties(); // Find layer with tshirt design image if ( $imageProperties['label'] == "Design" ) { echo "<p>Found DESIGN label</p>"; print_r($imageProperties); } }