Viewing file:  unset_global_global.php (960 B) -rw-rw-r--
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<?php
/*
* What happens when we unset($GLOBALS)? To set of tests, once where we unset
* $GLOBALS from the global scope, and once where we unset it in every local
* scope (in unset_local_global.php).
*/
function show_global_x1()
{
global $x1;
echo "x1: $x1\n";
}
function show_global_x2()
{
echo "x2: $GLOBALS[x2]\n";
}
function set_global_y1()
{
global $y1;
$y1 = 30;
}
function set_global_y2()
{
$GLOBALS["y2"] = 40;
}
// First test; everything works as expected
$x1 = 10;
$x2 = 20;
unset($y1);
unset($y2);
show_global_x1();
show_global_x2();
set_global_y1();
set_global_y2();
echo "y1: $y1\n";
echo "y2: $y2\n";
// Second test, after unset($GLOBALS) in the global scope
// $x2 and $y2 now disappear, but $x1 and $y1 still work
unset($GLOBALS);
$x1 = 10;
$x2 = 20;
unset($y1);
unset($y2);
show_global_x1();
show_global_x2();
set_global_y1();
set_global_y2();
echo "y1: $y1\n";
echo "y2: $y2\n";
?>
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