Online PHP editor | output for dZq7U

<?php function in_array_cmp($needle, array $haystack, callable $cmp) { foreach ($haystack as $value) { if ($cmp($needle, $value)) { return true; } } return false; } $cmpround = function($a, $b) { return round($a, 1) == round($b, 1); }; $array_1 = range(1, 1.9, 0.1); var_dump(in_array_cmp(1.7, $array_1, $cmpround)); $array_2 = range(0, 0.9, 0.1); var_dump(in_array_cmp(0.3, $array_2, $cmpround)); var_dump(in_array_cmp(0.6, $array_2, $cmpround)); var_dump(in_array_cmp(0.7, $array_2, $cmpround)); //=>it return false;