PHP カスタム関数: 多次元配列を 1 次元配列に再帰的に変換する

function array_multi2single($array)
{
 static $result_array=array();
 foreach($array as $value)
 {
 if(is_array($value) ))
 {
 array_multi2single($value);
 }
 else
 $result_array[]=$value;
 }
 return $result_array;
}
//测试
$array= array("1"=>​​array("A","B","C",array("D","E")),"2"=>array("F","G", "H","I"));
$array=array_multi2single($array);
echo "gt;测试结果:";
foreach($array as $value)
{
 echo "$value";
 echo "";
}
?>