Issue 1581 - I've added preg_replace (for strings only) and substr to available…

I've added preg_replace (for strings only) and substr to available expressions in workflow

USE CASE: For instance imagine to make a report for contracts needing invoicing every quarter or every semester or every year needing a field to extract from a date field the month, via preg_replace you can.

Status changed to merged

mentioned in commit abbbe0cc

Great news! Thank you @uma.s ! I'm happy to contribute to vTiger code!

@angelo.paglialonga Your welcome! We are very happy to accept more community contibutions and grow together :)

Thank you!

@angelo.paglialonga , about the use case you mention, for that specific scenario you can use recurring invoices via the SalesOrder module. It creates invoices automatically with a given frequency (yearly, monthly, etc...). Of course the regular expressions feature is still useful. I just wanted to rise awareness about the "recurring invoice" feature which is often overlooked.

Cheers!