var_dump(isset($v2));
// still set, even though passed in by reference and unset
var_dump($v2);
echo "---------- unsetting inside a function (static) ------------\n";
function g4()
{
static $count = 0;
++$count;
echo "count = {$count}\n";
var_dump(isset($count));
unset($count);
// unsets local "version" in current scope
var_dump(isset($count));
}
g4();
g4();
echo "---------- unsetting a property ------------\n";
class C
{
const CON1 = 123;
public $prop = 10;
public static $sprop = -5;
}
$c1 = new C();
var_dump($c1);
var_dump(isset($c1->prop));
unset($c1->prop);
// remove it from this instance
var_dump(isset($c1->prop));
//unset(C::$sprop); // Attempt to unset static property
var_dump($c1);
<?php
function g4()
{
$arr = array(0, 1, 2, 3);
$b = true;
foreach ($arr as &$v) {
(yield null);
echo "val={$v}\n";
if ($b && $v == 1) {
$b = false;
array_push($arr, 4);
}
}
}
foreach (g4() as $_) {
}