基础题，通过递归正则匹配数字元素

digui函数程序功能为通过递归正则匹配数字

如果是数字就保存到新数组中保存，最后返回所有包含数字的元素的数组


$array=array(
"22",
"1234",
array("a",
   array("aab","00000","aaa","222000","3333000"),
   "aa","999","aaaa"),
"d",
"567",
"33",
"dsf");
$fl_array=array();
function digui($arr)
{ 
    global $fl_array;
foreach($arr as $key=>$value)
{
    if (is_array($value))
    {
   digui($value);
    }
}

$fl_array = preg_grep("/\d+/", $arr);   

return $fl_array;

}

print_r(digui($array));
?>

回复讨论(解决方案)

$array=array(  "22",  "1234",  array(    "a",    array("aab","00000","aaa","222000","3333000"),    "aa","999","aaaa"),  "d",  "567",  "33",  "dsf");function digui($arr) {   $fl_array = array();  foreach($arr as $key=>$value) {    if(is_array($value)) {      $fl_array = array_merge($fl_array, digui($value));    }  }  $fl_array = array_merge($fl_array, @preg_grep("/\d+/", $arr));     return $fl_array;}print_r(digui($array));

Array
(
    [0] => 00000
    [1] => 222000
    [2] => 3333000
    [3] => 999
    [4] => 22
    [5] => 1234
    [6] => 567
    [7] => 33
)

$result=array();global $result;function getNum($arr){ 	global $result;	foreach ($arr as $value) {		if(is_array($value)){			getNum($value);		}		if(is_numeric($value)){			array_push($result, $value);		}	}	return $result;}print_r(getNum($array));

这样好像也可以