复制代码 代码如下:

function ($file_name,$pass_type=array('jpg','jpeg','gif','bmp','png')){

$yx_file = $pass_type;

$kzm = substr(strrchr($file_name,"."),1);

$is_img = in_array(strtolower($kzm),$yx_file);

if($is_img){

return true;

}else{

return false;

}

}