Answer & Solution
Answer: Option C
Solution:
Parameters in PHP functions are used to specify values that are passed to the function when it is called, allowing the function to work with different data.
Q
What is the purpose of parameters in PHP functions?
Related Questions on Average
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 $num cannot be accessed outside the function
How do you define parameters in a PHP function?
A). Parameters are defined within parentheses after the function name
B). Parameters are defined using the keyword 'param'
C). Parameters are defined using curly braces {}
D). Parameters are defined using square brackets []
What is the syntax for calling a function in PHP?
A). callFunction()
B). function callFunction()
C). callFunction
D). callFunction;
What keyword is used to define a function in PHP?
A). define
B). function
C). declare
D). method
Which of the following statements about return types in PHP functions is true?
A). PHP functions must always have a return type
B). PHP functions can have a return type specified using the 'returns' keyword
C). PHP functions can have a return type specified using the 'return' keyword
D). PHP functions can have a return type declared using type declarations
What will be the output of the following PHP code?<?php
function outer() {
function inner() {
echo 'Inner function';
}
}
inner();
?>
A). Inner function
B). Function does not exist: inner
C). Undefined function: inner
D). Function inner() { echo 'Inner function'; }
Which PHP keyword is used to check if a function exists before calling it?
A). check_function()
B). function_exists()
C). function_check()
D). exists_function()
What is the significance of default parameter values in PHP functions?
A). Default parameter values are required for all parameters in a function
B). Default parameter values allow specifying multiple default values for a parameter
C). Default parameter values allow parameters to be optional
D). Default parameter values allow specifying the data type of parameters
Which of the following statements is true about function names in PHP?
A). Function names are case-sensitive
B). Function names must start with a dollar sign ($)
C). Function names cannot contain numbers
D). Function names can contain spaces
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