PHP ORDER FORM KEEPS LOOPING AND SENDING EMPTY INFORMATIONS

I AM HAVING ISSUES WITH MY ORDER FORM FOR MY WEBSITE [login to view URL] FOR HDB FOR LANDED FOR PRINTS ALL THE ABOVE HAS ORDER FORM, WHICH CUSTOMERS CAN CHOOSE OPTIONS AND SUBMIT, I WILL RECEIVE ALL ORDERS INFORMATIONS INTO THE EMAIL I ASSIGNED THE PROBLEM NOW IS IT KEEPS SENDING EMPTY/NULL INFORMATIONS TO MY EMAIL ACCOUNT. IT IS BEING GENERATED BY THE SERVER/SYSTEM, IT KEEPS LOOPING TO SEND OUT EMPTY ORDERS, REFER TO PICTURE FOR THOSE EMPTY ORDERS EMAIL I SUSPECTED MY PREVIOUS DEVELOPER HAS FORGOTTEN TO REMOVE CERTAIN PHP CODE IN THE SCRIPT, THUS IT KEEP TESTING THE FUNCTION OVER AND OVER AGAIN IT HAS BEEN LOOPING FOR YEARS, ONE DAY I CAN RECEIVE UP TO 100+ EMPTY INFORMATIONS EMAILS. ONE MONTH 1000+ NULL ORDERS. MY CONTACT FORM PAGE IS NOT FACING THIS ISSUES THOUGH, MAYBE WE COULD LOOK INTO ANY SIMILIARITY HERE LASTLY I ALL ORDERS FORM AND CONTACT FORM BEING SUBMITTED AND RECEIVE BY ME, I SHOULD NOT BE SEEING THOSE PROGRAMMING LANGUAGE CODES. REFER TO THE PICTURE THAT I AM TALKING TO THIS IS SIMPLE PROJECT, MY BUDGET IS FIXED. DO NOT TRY YOUR LUCK IN BIDDING HIGH AMOUNT I WILL NO ENTERTAIN YOU. I WILL PAY WHEN ONLY ALL IS WORKING FINE.