K Hospitality Corp PHP Developer Interview Questions and Answers

Session and cookies are used to store data on the client-side for a specific period of time.

• Session stores data on the server-side while cookies store data on the client-side

• Session data is destroyed when the user closes the browser while cookies can have an expiration date

• Session data is more secure than cookies as it is not accessible by the client-side

• Cookies are commonly used for user authentication and personaliza...read more

unset and unlink are functions in PHP used to remove variables and files respectively.

• unset is used to destroy a variable and free up memory

• unlink is used to delete a file from the server

• Both functions return a boolean value indicating success or failure

• unset can be used on arrays, objects, and variables

• unlink can be used with a file path or a file handle

Access modifiers define the scope of class properties and methods.

• Public: accessible from anywhere

• Private: accessible only within the class

• Protected: accessible within the class and its subclasses

• Examples: public function getName() { ... }, private $age, protected $salary