Online PHP editor | refs for MNIG5

@ 2017-07-12T21:34:35Z

<?php
$str = "1 -4 5 6 -2";
$e = "";
$m = "-";
for($i = 0, $len = strlen($str); $i < $len; $i++) {
        if($m == $str[$i]) {
            $e = $m;
        }
        else {
            $e = "";
        }
        
        if(is_numeric($str[$i])) {
            $result[] = $e . $str[$i];
        }
    }

echo $result;