Code: Merge Gif Images to create one image

The following code will take an array of gif images and merge them into one and save the resulting image to file.

I use it to create a unit images on the fly. As users buy different equipment, the unit's look changes.

function mergeImages($imgPathArray, $dest)
{
 $imgArray = array();
 for($i=0;$i < sizeOf($imgPathArray);$i++)
 {
  array_push($imgArray, imageCreateFromGif($imgPathArray[$i]));
 }

 $src = $imgArray[0];
 $background = ImageColorClosest($src, 0, 0, 0);

 for($i=1;$i<sizeOf($imgArray);$i++)
 {
  //ImageColorTransparent($imgNew, $background);

  ImageCopyMerge( $src ,
    $imgArray[$i],
    0, //dest x
    0, //dest y
    0, //src x
    0, //src y
    74,//width
    100,//height
    100 //alpha
    );

  imagedestroy($imgArray[$i]);
 }

 return ImageGif($src, $dest);
}

Usage:

$dest = "images/custImage.gif";
$imgPathArray = array("images/builder/blueBase.gif","images/builder/body.gif","images/builder/legs.gif");
array_push($imgPathArray, "images/builder/body.gif");
array_push($imgPathArray, "images/builder/legs.gif");
array_push($imgPathArray, "images/builder/sword.gif");
mergeImages($imgPathArray, $dest);

Notes and Caveats:

All of my gif images were the same size, 74 X 100.
They also have transparent backgrounds.
If your images are different sizes, just change the width and height lines.
Note: Your array must contain at least 2 images otherwise you get an error.