Converter script to generate PDF files.

psdConverter.php

<?php
/**
 * Image to PSD converter
 *
 * Converts an base64 encoded image (PNG) to PSD via ImageMagick.
 *
 * The receiving data must be an array with
 *  - id = Unique dataset id.
 *  - name = Image name.
 *  - images = Array with the image data.
 *  - base_path = The base path to write the images to; ending / is needed.
 *  - path = The path to write the images to; ending / is needed.
 *
 * Returns an array with the PSD file paths, keyed by the data['images'] array keys.
 */

$data = json_decode(file_get_contents('php://input'), true);

if(!is_array($data)) {
  header('HTTP/1.0 500 Internal Server Error');
}

$id = $data['id'];
$name = $data['name'];
$images = $data['images'];
$base_path = $data['base_path'];
$path = $data['path'];

$psdFiles = array();

foreach ($images as $language => $base64String) {

		$filename = $name . '_' . $id . '_' . $language . '.psd';
		$psdPath = $path . 'psd/' . $filename;

		// Get bas64 decoded data string
		$base64 = explode(',', $base64String);
		$blob = base64_decode($base64[1]);

		$ifp = fopen($base_path . $psdPath, "wb");

		// Write PSD
		$image = new \Imagick(); //Create ImageMagick object
		$image->readImageBlob($blob); //Fill image with data
		$image->setImageUnits(\Imagick::RESOLUTION_PIXELSPERINCH); //Set resolution unit to ppi
		$image->setImageResolution(300, 300); //Set resolution to 300dpi
		$image->transformImageColorspace(\Imagick::COLORSPACE_CMYK); //Set colorspace to CMYK
		$image->setImageFormat('psd'); //Set File ex. to PSD
		$image->writeImageFile($ifp); //Write image file to disk.

		// Clean image data
		$image->clear();
		$image->destroy();

		// Close file handle
		fclose($ifp);

		$psdFiles[$language] = $psdPath;

}

// Send data back to requester
echo json_encode($psdFiles);