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PHP Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to PHP. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 2 - Which of the following type of variables are floating-point numbers, like 3.14159 or 49.1?

A - Integers

B - Doubles

C - Booleans

D - Strings

Answer : B

Explanation

Doubles: are floating-point numbers, like 3.14159 or 49.1.

Q 4 - Which of the following array represents an array containing one or more arrays?

A - Numeric Array

B - Associative Array

C - Multidimentional Array

D - None of the above.

Answer : C

Explanation

Multidimensional array − An array containing one or more arrays and values are accessed using multiple indices.

Q 5 - Which of the following variable is used for the PHP script name?

A - $_PHP_SELF

B - $SELF

C - $PHP

D - None of the above.

Answer : A

Explanation

The PHP default variable $_PHP_SELF is used for the PHP script name and when you click "submit" button then same PHP script will be called.

Q 6 - Singly quoted strings are treated almost literally, whereas doubly quoted strings replace variables with their values as well as specially interpreting certain character sequences.

A - true

B - false

Answer : A

Explanation

Singly quoted strings are treated almost literally, whereas doubly quoted strings replace variables with their values as well as specially interpreting certain character sequences.

Q 7 - Which of the following is used to check if session variable is already set or not in PHP?

A - session_start() function

B - $_SESSION[]

C - isset() function

D - session_destroy() function

Answer : C

Explanation

Make use of isset() function to check if session variable is already set or not.

Q 8 - Which of the following provides content type of the uploaded file in PHP?

A - $_FILES['file']['tmp_name']

B - $_FILES['file']['name']

C - $_FILES['file']['size']

D - $_FILES['file']['type']

Answer : D

Explanation

$_FILES['file']['type'] − it provides the content type of the uploaded file in PHP.

Q 10 - Which of the following method acts as a constructor function in a PHP class?

A - class_name()

B - __construct

C - constructor

D - None of the above.

Answer : B

Explanation

PHP provides a special function called __construct() to define a constructor. You can pass as many as arguments you like into the constructor function.

php_questions_answers.htm
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