Question

We have a registration form for a service on our website. For that form we want a unique reference number which should keep on incrementing. For example FM00001 , FM00002 and so on.

How can this be achieved in PHP. Is there a way to save a Global variable that can be incremented on a successful submission and then retrieved later for new form.

Answer 1

I would store the number in a database and then increment it. Or simpler use a textfile.

Textfile could be performed by:

//read
$f = @fopen("count.txt","r");
if(!$f) die ("File could not be opened");
$count = fgets($f,9);
fclose($f);

$count++;

//write
$f = @fopen("count.txt","w");
if(!$f) die ("File could not be written");
fwrite($f,$count);
fclose($f);