GetSerNo

Syntax

GetSerNo(filename, str_key);

filename	A string specifying the path and filename of the file containing the number sequence.
str_key	A string specifying the key.

Description

Calculates the next counter value in a number sequence according to a specified key. Returns the next counter value and amends the value to the number sequence.

Returns

A number specifying the next value in a number sequence.

Example

$a="C:\stream\serve\sernofile";
$b="test";
$c=getserno($a,$b);

Contents of the file sernofile:

test0    0

test     10 50

test1    57 50 100

Result:      $c=11

Each line in the file can contain 2, 3, or 4 columns.

2 columns:	column1 = key column2 = current counter value (incremented after call)
3 columns:	column1 = key column2 = current counter value (incremented after call) column3 = maximum counter value (When this number is reached, the counter will be set to zero)
4 columns:	column1 = key column2 = current counter value (incremented. after call) column3 = minimum counter value column4 = maximum counter value (when this number is reached, the counter will be set to the minimum counter value)