Php Image matrix function and page

Given a php array of image names and path you will need to provide function and a module that creates a sigle mosaic image of the images combined. The image file should be as small as posible and will have to maintain reasonable quality for web uses. Having a changing array size as the number of images is changing, the fiollowing describes the structure of the images and number of images per row: # of images = structure ROW1,ROW2,ROW3..... ROWn 1 image = 1 2 images = 2? ? 3 images = 1,2? 4 images = 2,2 5 images = 2,1,2 6 images = 3,3 7 images = 2,3,2 8 images = 3,2,3 9 images = 3,3,3 10 images = 3,2,2,3 11 images = 2,3,3,3 12 images = 3,3,3,3 All images should be scaled in memory to fit each other before placed into the mosaic. Images are not to be scaled up in size - only to smaller size so the smallest image sets the size of all the other images. returned mosaic image size max size is W pix wide H pix high in user setable paramters. The images used to create the mosaic need to have X pixels sapcing ? between them set by? user setable parameters. The function will have 2 modes: savetodisc mode - the image is saved as the function is called. preview mode - the page will show 3 options of the image with 5% higher and lower quality. The user will choose the image he likes. and the mozaic needs to be saved to disc to a specific name supplied to the function. parameters. If the image exists then _x should be added to the end of the image name before the file extension - where x is the number of the image if several images already exist.... The function parameters: (array, quality, spacing, watermark_path, output_image_width_max, ? output_image_height_max, preview_mode, destination_name) The function returns the file name on success and null when image creation is unsuccessfull and debug info sent to log using the php error_log() function.