I would normally expect to complete a project of this type in 7 days. However, I am forced to include a delay in my estimate as a fault on my phone line may prevent me from starting work immediately.
Can I ask how the message should be posted to the website? Is there an existing form, or would I also be creating the webpage itself?
Also, as far as I know there are 2 ways for an application to receive SMS/MMS messages: Through a dedicated interchange service, or (the method I am familiar with) by connecting a cell phone to the server. Could you provide more details about the available hardware, please?
I have previously implemented software to complete this task in Perl, but I believe it should be relatively simple to convert this application to PHP if this is your requirement.
Thankyou for your consideration.