Quiz PHP Core

Which of the following is correct about PHP?

• PHP is a recursive acronym for "PHP: Hypertext Preprocessor".

• PHP is a server side scripting language that is embedded in HTML.

• It is used to manage dynamic content, databases, session tracking, even build entire e-commerce sites.

• All of the above.

Which of the following is correct about determine the "truth" of any value not already of the Boolean type?

• If the value is a number, it is false if exactly equal to zero and true otherwise.

• If the value is a string, it is false if the string is empty (has zero characters) or is the string "0", and is true otherwise.

• Values of type NULL are always false.

• All of the above.

Which of the following is correct about NULL?

• NULL is a special type that only has one value: NULL.

• The special constant NULL is capitalized by convention, but actually it is case insensitive.

• Both of the above.

• None of the above.

Which of the following magic constant of PHP returns class name?

• LINE

• FILE

• FUNCTION

• CLASS

Which of the following function is used to get environment variables in PHP?

• search()

• environment()

• env()

• getenv()

If there is any problem in loading a file then the require() function generates a warning but the script will continue execution.

• true

• false

Which of the following is used to access session variables in PHP?

• session_start() function

• $_SESSION[]

• isset() function

• session_destroy() function

Which of the following is used to destroy the session?

• session_start() function

• $_SESSION[]

• isset() function

• session_destroy() function

Which of the following method of Exception class returns source filename?

• getMessage()

• getCode()

• getFile()

• getLine()

Which of the following method can be used to close a MySql database using PHP?

• mysql_connect()

• mysql_query()

• mysql_close()

• None of the above