Converting fread() to int

[brenhein]

Hello.

 

I need help adding a text file content by one and then saving.

 

My current code is

								$myFile = "serving";
$fh = fopen($myFile, 'w+') or die("can't open file");
$conv = fread($fh, 4);
$stringData = $conv++;
fwrite($fh, $stringData);
fclose($fh);

 

I was told this would work, but of course, it doesn't.  It always returns 1.

 

I also tried casting it as an int by using

$stringData = (int) $conv++;

[Pikachu2000]

Does that file contain just one number, and nothing else?

[brenhein]

The text file contains just a number.

[sasa]

change

$stringData = $conv++;

to

$stringData = $conv+1;

or

$stringData = ++$conv;

[Pikachu2000]

Or to simplify it a little bit

$myfile = 'serving';

$num = file($myfile);
$num[0] = $num[0] + 1;
file_put_contents($myfile, $num[0]);