How to evaluate an integer value as an integer in a string value?

[magneto]

Hi,

The title is not very clear but I have a string attribute where I want to modify its values by using basic arithmetic. The string attribute looks like this:

attribute name = mypath
attribute value = "C:/Textures/bump"
[/CODE]

I want to replace "bump" with "disp", and add 1, 2, 3 to it as a suffix with ".jpg":

[CODE]
"C:/Textures/disp1.jpg"
"C:/Textures/disp2.jpg" (next attribute)
"C:/Textures/disp3.jpg" (next attribute)
[/CODE]

I tried this but the number 1 is added as a string, and I don't know how to force it to be evaulated as an integer:

[CODE]`strreplace($MYPATH, "bump", "disp" + ($PT % 3) + 1 + ".jpg")`[/CODE]

The modulo returns, 0, 1, and 2 so I need to add 1 to it, but it ends up as 01, 11, 21 due to string concatenation.

Any idea how to evaluate this as an integer?

Thanks

Edited June 16, 2013 by magneto

[Guest mantragora]

For example you can add () around ($PT % 3) + 1

`strreplace($MYPATH, "bump", "disp" + (($PT % 3) + 1) + ".jpg")`

so it gets evaluated as one expression first.

[magneto]

Thanks that worked. I am getting weird modulo results for some reason though. 0, 0, 2, 0, 2, 1, 1, for 0-6. Not sure why that is.