Description:
------------
reset() work much slower than foreach() under PHP7

Looks like developers optimized foreach(), but forgot about reset(). Under PHP5 speeds are similar.

Test script:
---------------
$arr = array_fill(0, 10000, "a");

$ts = microtime(true);
$first_key = -1;
foreach ($arr as $k => $v)
{
	$arr2 = $arr;
	reset($arr2);
	$first_key = key($arr2);
}
echo microtime(true)-$ts, "<br />\n";
echo $first_key, "<br />\n";

$ts = microtime(true);
$first_key = -1;
foreach ($arr as $k => $v)
{
	$arr2 = $arr;
	foreach ($arr2 as $k2 => $v2) break;
	$first_key = $k2;
}
echo microtime(true)-$ts, "<br />\n";
echo $first_key, "<br />\n";



Expected result:
----------------
0.0011060237884521
0
0.0011060237884521
0

Actual result:
--------------
0.64054489135742
0
0.0011060237884521
0