What does the function get_magic_quotes_gpc() means?
The function get_magic_quotes_gpc() tells us whether the magic quotes is switched on or no.
How can we automatically escape incoming data?
We have to enable the Magic quotes entry in the configuration file of PHP.
How is it possible to remove escape characters from a string?
The stripslashes function enables us to remove the escape characters before apostrophes in a string.
How do I escape data before storing it in the database?
The addslashes function enables us to escape data before storage into the database.
What does the unset() function mean?
The unset() function is dedicated for variable management. It will make a variable undefined.
What does the unlink() function mean?
The unlink() function is dedicated for file system handling. It simply deletes the file given as entry.
How do I check if a given variable is empty?
If we want to check whether a variable has a value or not, it is possible to use the empty() function.
How can we check the value of a given variable is alphanumeric?
It is possible to use the dedicated function, ctype_alnum to check whether it is an alphanumeric value or not.
How can we check the value of a given variable is a number?
It is possible to use the dedicated function, is_numeric() to check whether it is a number or not.
How can we access the data sent through the URL with the POST method?
To access the data sent this way, you use the $_POST array. Imagine you have a form field called ‘firstname’ on the form when the user clicks submit to the…