I am a linux sysadmin as well as a programmer that works for a web hosting company since 2009. We use PHP/APIs/JSON/XML as well as other technologies on a daily basis. I literally know it inside out. I can help you with the issue you are facing.
Will help with creating the php script to search and show results from API based on input fields.
If needed, I can also provide help on Skype, to give you assurance that everything is running exactly how you want it to be :-)
You can also see my previous reviews on related work, and the clients were impressed.
Any questions, please let me know.
Please contact me before accepting me, so I have more information about your project. Thanks.