Question

I need to create a function that, given a target folder will…

1) Check to see if a file named myImage.png exists in the target folder and creates a copy of it called myImage-default.png

2)Checks to see if a file named “myImage-trans.png” exists in the target folder (creates it if not), makes a copy of it and saves it as myImage.png (myImage-trans.png should be a 1×1 pixel transparent png)

How difficult might this be and what PHP methods would you use?

• All images will reside in the root of the target folder. No subfolders involved.

Answer 1

Shouldn’t be too bad.

Here are some PHP functions that will get you started:

filexists – Check if that file exists

imagecreate – Create an image if that image doesn’t already exist

imagepng – Output a PNG file with your newly created image

imagecopy – Copy a portion of an image

copy – Copy a file

rename – rename a file