How can I restrict android app developer to send form to my database, which i send same from php page? I do not want any app developer send data to my database? What type of functionality I have to write to Know whether php form submit to db and app developer form not submitted?
Mobile apps would be running on different mobiles and hence would be having different IP addresses. You need to ensure that your database accepts a connection request from specific IP addresses only. Most probably it should be localhost.