[PHP] Retrieve PSD Image Dimensions

Here is a function I made for a site I am currently working on. What it does is reads a specifed photoshop psd file and retrieves the width and height.

Comments are welcome, If you have any questions just ask :wink:

mixed getPSDdimensions ( string fileandpath )

Returns string representation.
Sample output: “1600 x 1200”


function getPSDdimensions($fileandpath){
  if (file_exists($fileandpath)){
	$filecontent = file_get_contents($fileandpath);
	$xstart = strpos($filecontent,"<exif:PixelXDimension>") + strlen("<exif:PixelXDimension>");
	$ystart = strpos($filecontent,"<exif:PixelYDimension>") + strlen("<exif:PixelYDimension>");
	$xlength = strpos($filecontent,"</exif:PixelXDimension>") - $xstart;
	$ylength = strpos($filecontent,"</exif:PixelYDimension>") - $ystart;
	if($xstart != false && $ystart != false && $xlength != false && $ylength != false){
		$psdWidth = substr($filecontent, $xstart, $xlength);
		$psdHeight = substr($filecontent, $ystart, $ylength);
		return $psdWidth . " x " . $psdHeight;
	}else{
	  return "Unknown";
	}
  }else{
	return "Unknown";
  }
}

Returns array representation.
Sample Output:
Array ([indent][0] => 1600
[1] => 1200
[/indent])


function getPSDdimensions($fileandpath){
  if (file_exists($fileandpath)){
	$filecontent = file_get_contents($fileandpath);
	$xstart = strpos($filecontent,"<exif:PixelXDimension>") + strlen("<exif:PixelXDimension>");
	$ystart = strpos($filecontent,"<exif:PixelYDimension>") + strlen("<exif:PixelYDimension>");
	$xlength = strpos($filecontent,"</exif:PixelXDimension>") - $xstart;
	$ylength = strpos($filecontent,"</exif:PixelYDimension>") - $ystart;
	if($xstart != false && $ystart != false && $xlength != false && $ylength != false){
		$psdWidth = substr($filecontent, $xstart, $xlength);
		$psdHeight = substr($filecontent, $ystart, $ylength);
		return array($psdWidth, $psdHeight);
	}else{
	  return false;
	}
  }else{
	return false;
  }
}