[Resolved] should be easy

[jazappi]

if I want to name a varible from part of a file name, which function should I use? For example:

$filename = "
RCL1_HYDY_3SCS_102403_2_200710_01_Blank_N_500_B.pdf";

//some code in here that matchs the fourth set of numbers from the above file name.

$newFolder ="Needs to equal the 4th set in the above file name";

mkdir("$newFolder, 0700");

Thanks in advance for the help, you guys are always life savers!!!

[jazappi]

Figured it out.

$newFolder = substr("RCL1_HYDY_3SCS_102403_2_200710_01_Blank_N_500_B", 15, -26);