How does the '&' symbol in PHP affect the outcome?

Question

I\'ve written and played around with alot of PHP function and variables where the original author has written the original code and I\'ve had to continue on developing the p

Answer 1

Now if we add &

$a = "hello";   # $a points to a slot in memory that stores "hello"
$b = &$a;   # $b points to the same address in memory as $a

$a = "world";

# prints "world" because it points to the same address in memory as $a.
# Basically it's 2 different variables pointing to the same address in memory
echo $b;        
?>