Functions — Part 2 MCQs with Explanations

$var is not global and hence is not available for one().

Argument is 0.

z is a variable present within the $GLOBALS array, it is also accessible from outside the function!

Function cannot begin with a number.

Function Begining with “_” is valid)

Function Is case Insensitive.

Simple arithmetic operation.

Simple use of arrays.

The strtr() function translates certain characters in a string.

By default constants are case sensitive. Hence an error will arise.

By default constants are case sensitive. But the third parameter in define(), if set to true, makes constants case insensitive.

Function returns 40. this is greater than 20, hence the output.

The strstr() function searches for the first occurrence of a string inside another string.

111 is the ASCII value of o.

function fumctionName(parameters) { function body } is the correct answer to “Which one of the following is the right way of defining a function in PHP”. This question is standard in competitive examination syllabi for Functions.

array_flip() is the correct answer to “. . . . . converts the keys of an array into values and the values into keys.”. This question is standard in competitive examination syllabi for Functions.

1 second is the correct answer to “Above usleep() function pauses PHP for . usleep(1000000);”. This question is standard in competitive examination syllabi for Functions.

Array ( [0] => NEW [1] => NEW [2] => NEW [3] => 0 [4] => 1 [5] => 2 ) is the correct answer to “Output will be: $array = array ( 0, 1, 2 ) ; $array = array_pad ( $array, -6, ‘NEW’ ) ;”. This question is standard in competitive examination syllabi for Functions.

All the Above is the correct answer to “phpinfo() will display about? 1. OS version information 2. PHP installation 3. Variables 4. HTTP headers”. This question is standard in competitive examination syllabi for Functions.

date_create() is the correct answer to “. . . . returns a new DateTime object.”. This question is standard in competitive examination syllabi for Functions.

False is the correct answer to “It is always necessary to use parentheses with the print function.”. This question is standard in competitive examination syllabi for Functions.

returns "c" is the correct answer to “The below statement will return. $Var = substr ( ""abcdef"", -4, 1 ) ;”. This question is standard in competitive examination syllabi for Functions.

Both A & B is the correct answer to “Returning values from functions may include .....”. This question is standard in competitive examination syllabi for Functions.

left to right is the correct answer to “The arguments in a function are evaluated from .....”. This question is standard in competitive examination syllabi for Functions.

0 is the correct answer to “strlen() returns the length of the string on success and . . . . if the string is empty.”. This question is standard in competitive examination syllabi for Functions.