Here is the code I've found on the web:
$array = [1, 2, 3];
echo implode(',', $array), "\n";
foreach ($array as &$value) {} // by reference
echo implode(',', $array), "\n";
foreach ($array as $value) {} // by value (i.e., copy)
echo implode(',', $array), "\n";
I want to understand why this happens. Can someone explain what happens with the reference each step. I know about this "bug" but I want to understand why is this happening.
BTW The output is:
1,2,3
1,2,3
1,2,2
