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Q. Validation means check the input submitted by the user.

Q. The abs() function returns the absolute (positive) value of a number:

Q. A ______is called when the object is destructed or the script is stopped or exited.

Q. URL stands for ____________ .

Q. A ______is a small file that the server embeds on the user's computer. Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both create and retrieve cookie values.

Q. PHP divides the operators in the following groups:

Q. CSS is use to separate data from _____.

Q. PHP was designed as a ________ scripting language.

Q. Interface are similar to abstract classes. The difference between interfaces and abstract classes are Interfaces cannot have properties, while abstract classes can have.

Q. To implement an interface, a class must use the______ keyword.