the line [in this] that is:

my ($temp, $needed_data_0) = split(/data_here(.+)/, $_);

There is no such line nor any split function call in this. If you update or alter a post (e.g., this), it is Considered Polite to cite the change(s) you have made with a  <strike>this</strike> (this) or  <del>this</del><ins>that</ins> (thisthat) or an "Update..." paragraph. Please see How do I post a question effectively?, Writeup Formatting Tips, Markup in the Monastery.