[redhead]

hmmmm.... What happens for the very first time..

$newcount = 

$file="count.txt"; 

$fh1=fopen($file,"r"); 
$count=fscanf($fh1,"%d"); 
fclose($fh1); 

$fh=fopen($file,"w+"); 
$count[0]=$count[0]+$newcount;

Assuming the count.txt is empty, and since your newcount is empty, theres nothing written to the file, on next read we have the same problem..
If your file contains a number (say 1) then on your $count[0]=$count[0]+$newcount; you have the same problem, the counter isn't incremented, since $newcount isn't holding anything..
On another note, I doubt this code will even run..
$newcount= is an undisclosed statement, which usualy causes an error.