array(100-10, -50,200-20, 300-30, -30）求一个匹配到这个数组所有成员的正则
------解决方案--------------------
$arr = array('100-10', '-50','200-20', '300-30', '-30');
$b = array();
foreach ($arr as $value) {
if(preg_match("/[\d-]+/", $value,$match)){
array_push($b, $match);
}
}
var_dump($b);