PHP encrypt image

I need someone to write me a simple php script that can take an image and encrypt it using AES

there should be the ability to input a 128bit key when encrypting and also should be able to select different modes of AES (ECB, CBC and CFB)

The script needs to see the image input and then save it as an encrypted image (if input is png then so will the output be etc)

You can use any existing AES classes out there, but please document your code leaving comments where you have done work.

please see the original and encrypted outputs as an example

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