Question1 : Regular Expression.
Question2: Persistant Connection.
Question3: Which function is use for File Uploading.
Question4: In one table there is one field salary select first 3 higher salary.
Question5: Fileatime function.
Question6: Which php function is use for connect database (Pconnect).
Question7 : short method of if ternary operation.
Question 8 : Error Control.
