--TEST--
Bug #31213 (Sideeffects caused by bug #29493)
--FILE--
<?php
function test($use_extract) {
	$a = 1;
	$b = 1;

	$arr = array(
		'_a' => $a,
		'_b' => &$b
	);

	var_dump($a, $b);

	if ($use_extract) {
		extract($arr, EXTR_REFS);
	} else {
		$_a = &$arr['_a'];
		$_b = &$arr['_b'];
	}

	$_a++;
	$_b++;

	var_dump($a, $b, $_a, $_b, $arr);
}

test(false);
test(true);
--EXPECT--
int(1)
int(1)
int(1)
int(2)
int(2)
int(2)
array(2) {
  ["_a"]=>
  &int(2)
  ["_b"]=>
  &int(2)
}
int(1)
int(1)
int(1)
int(2)
int(2)
int(2)
array(2) {
  ["_a"]=>
  &int(2)
  ["_b"]=>
  &int(2)
}
