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Ravi Trivedi
2,327 PointsWorking with Functions: Multiple Choice Quiz
What does the following code display?
<?php
$x = 1;
function sum_two_numbers($x,$y) {
$z = $x + $y;
return $z;
}
$y = sum_two_numbers(2,3);
echo $x;
?>
Can someone explain to me how to find the value of $x? I greatly appreciate it.
3 Answers
Thomas Rendleman
Courses Plus Student 9,516 Points$x=1; // This is the first occurance of the variable x being assigned a value of 1. $x is not modified again. The statement echo $x; simply displays the variable x's value which is still the value of 1. I hope this helps...
The function sum_two_numbers uses the $x variable but limited scope. It means that the $x variable inside the function and outside the function are essentially different variables.
Ravi Trivedi
2,327 PointsThanks for the clarification about $x variable with limited scope. This makes sense now. Thank you!
Thomas Rendleman
Courses Plus Student 9,516 PointsNo problem. It kind of messed with me too.