How to get the part of string coming after first word and underscore from the given string in PHP?

Question

Following is one variable that contains the string:

 $msg ='file_fafe9add9c26415689ffcfbc000d7751.docx';

I don't want initial part(i.e. file_) from the file name below. It should come as follows :

$msg ='fafe9add9c26415689ffcfbc000d7751.docx';

How could I achieve it in PHP in an efficient and best way?

Thanks in advance.

Answer 1

str_replace('file_', '', $msg)