foreach(glob('Library/*.doc') as $file)  
{  
//берём первые 10 букв от имени файла
$file_name =substr($file, 0, 10);
//echo $file_name;
if ($file_name ='Library/Ko')
{$file_KoAP_RF =$file;}
elseif ($file_name ='Library/Po') 
{$file_Postanovlenie_RF_1002 =$file;}
elseif ($file_name ='Library/Pr') 
{$file_PDD_RF =$file;}
elseif ($file_name ='Library/UI') 
{$file_UIK_RF =$file;}
elseif ($file_name ='Library/UK') 
{$file_UK_RF =$file;}
elseif ($file_name ='Library/UP') 
{$file_UPK_RF =$file;};
}
var_dump ($file_KoAP_RF . " ". $file_Postanovlenie_RF_1002 . " ". $file_PDD_RF . " ". $file_UIK_RF . " ". $file_UK_RF . " ". $file_UPK_RF);
echo $file_KoAP_RF . " ". $file_Postanovlenie_RF_1002 . " ". $file_PDD_RF . " ". $file_UIK_RF . " ". $file_UK_RF . " ". $file_UPK_RF;