--TEST-- SPL: RegexIterator --FILE-- <?php $ar = array(0, "123", 123, 22 => "abc", "a2b", 22, "a2d" => 7, 42); foreach(new RegexIterator(new ArrayIterator($ar), "/2/") as $k => $v) { echo "$k=>$v\n"; } ?> ===KEY=== <?php foreach(new RegexIterator(new ArrayIterator($ar), "/2/", 0, RegexIterator::USE_KEY) as $k => $v) { echo "$k=>$v\n"; } ?> ===DONE=== <?php exit(0); ?> --EXPECT-- 1=>123 2=>123 23=>a2b 24=>22 25=>42 ===KEY=== 2=>123 22=>abc 23=>a2b 24=>22 a2d=>7 25=>42 ===DONE===