<?php
function multiply(...$args) {
$result = 1;
foreach ($args as $value) {
$result *= $value;
}
return $result;
}
echo multiply(2, 3, 4);
?
Which PHP feature allows defining functions with variable-length argument lists?
A). Dynamic functions
B). Variable arguments
C). Varargs
D). All of the above
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
Which PHP feature allows defining functions within other functions?
A). Inner functions
B). Enclosed functions
C). Nested functions
D). All of the above
Which of the following statements about returning values from PHP functions is true?
A). PHP functions can return multiple values simultaneously
B). PHP functions cannot return values
C). PHP functions must always return a value
D). PHP functions can only return values of type string
Which keyword is used to define default parameter values in PHP functions?
A). default
B). var
C). const
D). None of the above
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 will be the output of the following PHP code?<?php
$greet = function($name) {
return 'Hello, $name!';
};
echo $greet('John');
?
A). Hello, John!
B). Hello, $name!
C). function($name) { return 'Hello, $name!'; }
D). John
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