myFunction and MyFunction would be considered different functions.
Which PHP keyword is used to declare a variable-length argument list in a function?
A). vararg
B). args
C). params
D). ...$args
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
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()
Which PHP feature allows defining functions within other functions?
A). Nested functions
B). Inner functions
C). Enclosed functions
D). Internal functions
How do you define parameters in a PHP function?
A). Parameters are defined within parentheses after the function name
B). Parameters are defined using the keyword 'param'
C). Parameters are defined using curly braces {}
D). Parameters are defined using square brackets []
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 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 feature allows defining functions without specifying their names?
A). Anonymous functions
B). Dynamic functions
C). Global functions
D). Static functions
What keyword is used to define a function in PHP?
A). define
B). function
C). declare
D). method