? | PHP | MYTAT"> ? | PHP | MYTAT">
Q
What is the output of the following PHP code?
<?php
function uppercase($str) {
return strtoupper($str);
}
echo uppercase('hello');
?

Answer & Solution

Answer: Option A
Solution:
The output of the code will be HELLO because the uppercase() function accepts a string $str as a parameter and returns its uppercase version using the strtoupper() function. The function is then called with the argument 'hello' and its result is echoed.
Related Questions on Average

Which PHP feature allows specifying default values for function arguments?

A). Default arguments

B). Optional parameters

C). Variable-length argument lists

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

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 keyword is used to define default parameter values in PHP functions?

A). default

B). var

C). const

D). None of the above

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 will be the output of the following PHP code?
<?php
function greet($name = 'Guest') {
return 'Hello, $name!';
}
echo greet('Alice');
?

A). Hello, Guest!

B). Hello, Alice!

C). Hello, $name!

D). Function call will result in an error

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

What will be the output of the following PHP code?
<?php
function greet() {
echo 'Hello, World!';
}
if (function_exists('greet')) {
greet();
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echo 'Function does not exist';
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?

A). Hello, World!

B). Function does not exist

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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 feature allows defining functions with a variable number of arguments?

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