Folder made depending on userid

1

i’m trying to make this file depending on numid

but it comes up as “can’t open file”


 <?php 
$userid = ("count.txt"); 
$numid = file($userid); 
$numid[0] ++; 
$folder='/'.$numid[0].'/'; 
$fp = fopen($userid , "w"); 
fputs($fp , "$numid[0]"); 
mkdir($folder, 0777); 
$ourFileName = $folder."pet".$numid[0].".txt"; 
$ourFileHandle = fopen($ourFileName, 'w') or die("can't open file"); 
echo "pet ID # $numid[0] was created, please remember this for later or write it down someplace"; 
fclose($ourFileHandle); 
fclose($fp); 
?>