Global namespace access in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to access the global variable inside the function.

PHP

<?php
$number = 10;
function showNumber() {
    global [1];
    echo $number;
}
showNumber();
?>

Drag options to blanks, or click blank then click option'

A$number

B$num

C$value

D$count

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different variable name inside the function.

Not declaring the variable as global inside the function.

The global keyword is used to access the global variable $number inside the function.

2fill in blank

medium

Complete the code to access the global variable using the $GLOBALS array.

PHP

<?php
$value = 5;
function printValue() {
    echo [1]['value'];
}
printValue();
?>

Drag options to blanks, or click blank then click option'

A$globals

B$GLOBALS

C$GLOBAL

D$global

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or misspelled versions of $GLOBALS.

Trying to access the variable directly without $GLOBALS.

The $GLOBALS array holds all global variables and can be used to access them inside functions.

3fill in blank

hard

Fix the error in the code to correctly access the global variable inside the function.

PHP

<?php
$count = 3;
function showCount() {
    [1];
    echo $count;
}
showCount();
?>

Drag options to blanks, or click blank then click option'

A$count

Bcount

C$this->count

Dglobal $count

Attempts:

3 left

💡 Hint

Common Mistakes

Not declaring the variable as global inside the function.

Using the variable name without the dollar sign.

Trying to access the variable as an object property.

To access the global variable inside the function, declare it with global $count; before using it.

4fill in blank

hard

Fill both blanks to create a function that modifies a global variable.

PHP

<?php
$score = 0;
function increaseScore() {
    global [1];
    [2]++;
}
increaseScore();
echo $score;
?>

Drag options to blanks, or click blank then click option'

A$score

B$count

D$value

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in the blanks.

Not declaring the variable as global before modifying it.

To modify a global variable inside a function, declare it with global $score; and then increment it with $score++;.

5fill in blank

hard

Fill all three blanks to access and modify a global variable using $GLOBALS.

PHP

<?php
$count = 1;
function addCount() {
    [1]['count'] = [2]['count'] + [3];
}
addCount();
echo $count;
?>

Drag options to blanks, or click blank then click option'

A$GLOBALS

C1

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names instead of $GLOBALS.

Adding a wrong number or forgetting to add.

Use $GLOBALS to access the global variable count and add 1 to it inside the function.