PHP validation for registration form
<p>I have the problem I created a registration form and given database connection and database field values to enter the values in table. Here I am able to enter all field values in tables. If the field is empty, the empty value is entered, so I need to validate the registration form. If user enters empty value it should show the errors. If all the fields entered then only then should the data be submitted to the database. I also need to show if user already exists or not.</p>
