<?php
function add($a, $b) {
return $a + $b;
}
$result = add(5, 3);
echo $result;
?
Which keyword is used to define default parameter values in PHP functions?
A). default
B). var
C). const
D). None of the above
What will be the output of the following PHP code?<?php
function sum($a, $b = 5) {
return $a + $b;
}
echo sum(3);
?
A). 3
B). 8
C). 5
D). Function call will result in an error
What is the output of the following PHP code?<?php
function multiply(...$args) {
$result = 1;
foreach ($args as $value) {
$result *= $value;
}
return $result;
}
echo multiply(2, 3, 4);
?
A). 24
B). 9
C). 6
D). 2
Which PHP keyword is used to pass a function as an argument to another function?
A). Dynamic functions
B). Anonymous functions
C). Callbacks
D). All of the above
Which PHP keyword is used to define functions without specifying their names?
A). Dynamic functions
B). Anonymous functions
C). Inner functions
D). Nested functions
What is the purpose of passing arguments to a function in PHP?
A). To specify the return value of the function
B). To allow the function to accept input data
C). To define the function name
D). To terminate the execution of the function
Which PHP function is used to return a value from a function and terminate its execution?
A). return
B). exit
C). break
D). continue
What is the purpose of the return statement in PHP functions?
A). To output a value from the function and terminate its execution
B). To specify the return type of the function
C). To declare a variable within the function
D). To terminate the function execution
What is 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 function is used to check if a function exists before calling it?
A). function_exists()
B). is_function()
C). function_defined()
D). None of the above