php字符串截取解决方法

$handle = opendir('../upload/');
$arr = array();
$file_arr=array();
while($file = readdir($handle)){
$newpath="../upload/".$file;
if(is_dir($newpath)){
    $arr[] = $newpath ;
    $file_arr[]=$file;
}
}
foreach($file_arr as $key=>$val){
    echo $val.'
';    
}