Simple Question

[rhnewfie]

If I have a variable that I populated by cutting apart a string, and I know that the variable is a number, can I do simple math on it?

$Variable = "Number10";
$OtherVar = substr($Variable, 7);
$OtherVar = $OtherVar + 1;

and now $OtherVar = 11?

Is there a way to write to a specific spot in a text file? What I mean is this. If i iterate through a file until I reach the desired line number can I insert a new line in that spot that overwrites the old line?

Also, is string concatenation the same as in most languages?

$String1 = $String1 + $String2 + "characters";

I appreciate your help.


There are 3 Types of People in the World
Those Born to Think Logically
Those that can Learn to Think Logically
Those that Shouldn't Try

 

[PaulTEG]

Your first question should be OK, suck it 'n' see

Concatenation is done using a period .

$String1 = $String1 + $String2 + "characters";

$String1.=$String2."characters";

HTH
--Paul