Question

which function is used to check if a cookie is set or not.

Answer 1

Cookies allow web applications to identify their users and track their activity. To set cookies, PHP setcookie() is used. To see whether cookies are set, use PHP isset() function.

Answer 2

Answer:

isset()

Explanation:

• The isset() is used to set up the cookies for any websites.
• The isset() function used to check the variable is set for the session or not.
• The this function returns true it means the variable for the session is set.
• If the function returns false it means the variable is not set for the session.
• The return type of this function is boolean.
• It can only returns the true or false according to the provided conditions.
• Is also determines that the programmer has ever make the use of that variable in the code or not.
• It also make sure the variable did not have the null values in the script.

Example:

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