Problem with References

[james2010]

For some reason when I run this script I can't $x to point at the same field as &$value. The first part prints 12, but the second part prints 11 when it should print 12.

$x = 11;
function plus_one(&$value)
{
return($value + 1);
}
print(plus_one($x));
print($x);

Have I made any mistakes?

[[deleted]]

"but the second part prints 11 when it should print 12"

And why should it print 12?

Your function takes $x as an argument and creates a reference to it called $value.

From that moment on $value is a direct link to $x. But your function does not do anything with the content of $value, it just returns $value+1. That means $value remains the same, so $x remains the same.

[james2010]

Ok thanks so if I changed
$value + 1 to $value = $value + 1 the result of the second print statement would be 12 right?