What is the output of the following PHP code?<?php
function multiply(...$args) {
$result = 1;
foreach ($args as $value) {
$result *= $value;
}
return $result;
}
echo multiply(2, 3, 4);
?>
A). 24
B). 9
C). 6
D). 2
What is the output of the following PHP code?<?php
$num = 10;
function testScope() {
global $num;
echo $num;
}
testScope();
?>
A). 10
B). 0
C). Undefined variable: num
D). Variable $num cannot be accessed outside the function
What is the significance of passing functions as arguments in PHP?
A). It allows functions to be called multiple times
B). It simplifies the function definition process
C). It enables dynamic function invocation and behavior
D). It prevents code duplication
Which PHP feature allows passing a function as an argument to another function?
A). Dynamic functions
B). Global functions
C). Static functions
D). Callbacks
What is the significance of default parameter values in PHP functions?
A). Default parameter values are required for all parameters in a function
B). Default parameter values allow specifying multiple default values for a parameter
C). Default parameter values allow parameters to be optional
D). Default parameter values allow specifying the data type of parameters
What will be the output of the following PHP code?<?php
function outer() {
function inner() {
echo 'Inner function';
}
}
inner();
?>
A). Inner function
B). Function does not exist: inner
C). Undefined function: inner
D). Function inner() { echo 'Inner function'; }
Which PHP keyword is used to check if a function exists before calling it?
A). check_function()
B). function_exists()
C). function_check()
D). exists_function()
What keyword is used to define a function in PHP?
A). define
B). function
C). declare
D). method
What is the syntax for calling a function in PHP?
A). callFunction()
B). function callFunction()
C). callFunction
D). callFunction;
What will be the output of the following PHP code?<?php
function uppercase($str) {
return strtoupper($str);
}
echo uppercase('hello');
?>
A). HELLO
B). hello
C). Uppercase
D). Undefined function: uppercase