精简一个if语句

Question

if(in_array($file_ext,$ext_arr['image']))$file_path='uploads/image/'.$new_file_name;if(in_array($file_ext,$ext_arr['media']))$file_path='uploads/media/'.$new_file_name;if(in_array($file_ext,$ext_arr['file']))$file_path='uploads/file/'.$new_file_name;大家看看上面的代码如何精简一下。

Answer 1

把$ext_arr给取缔了，改成
$types_of_extensions=array(
'jpg'=>'image',
'png'=>'image',
'gif'=>'image',
'rmvb'=>'media',
'mp3'=>'media',
'doc'=>'file',
'pptx'=>'file'
/*...andmanymore,whateveruwant*/
);
$file_path='uploads/'.$types_of_extensions[$file_ext].'/'.$new_file_name;
                            

Answer 2

foreach(array('image','media','file')as$type)
foreach($ext_arr[$type]as$t)@$ext[$t]=$type;
$file_path="uploads/{$ext[$file_ext]}/$new_file_name";
只是讨论精简的话，这个成功精简三行的样子而且字数上也少很多，两行的样子比较难看我就不缩了~