PHP 8.1 issue with preg_match()

Patch to add null coalescing operator. Casting to string would also work.

abhishek_gupta1 → made their first commit to this issue’s fork.

@colan, fixed the issue and created. please kindly review the MR

If $reference_value is empty, then it won't match the regex anyway so might as well avoid the call.

regarding #8

Based on #8 made changes.

Regarding ?? vs !=NULL see following code test example: https://3v4l.org/McavC

See most recent comments.

prem suthar → made their first commit to this issue’s fork.

Try To Addressed the #8 point .

The best thing might just to be cast to string; see merge request. The problem with empt() is that 0 is empty.