PHP Warning: preg_match(): Compilation failed: missing ) at offset

[raamdev]

The following was reported in the community forum:

mod_fcgid: stderr: PHP Warning: preg_match(): Compilation failed: missing ) at offset 309 in /AppBuzzinga.com/httpdocs/wp-content/plugins/s2member/src/includes/classes/custom-reg-fields.inc.php on line 696, referer: https://appbuzzinga.com/?s2member_profile=1

Here's that line in the source code:
https://github.com/websharks/s2member/blob/161129/src/includes/classes/custom-reg-fields.inc.php#L696

It looks like this is what's causing the problem:

preg_match($non_personal_email_users, $input[$_field_var])

The "Compilation failed: missing ) at offset" warning is likely being thrown because of special characters in $input[$_field_var] that are not being escaped properly. I think we should be using preg_quote() there.

@jaswsinc Can you confirm?

[jaswrks]

Referencing: https://github.com/websharks/s2member/blob/161129/src/includes/classes/custom-reg-fields.inc.php#L576

[jaswrks]

I thought we fixed this here already.
https://forums.wpsharks.com/t/bugfix-file-custom-reg-fields-inc-php-missing-bracket/1195/3

[jaswrks]

Yeah. It's been fixed in the dev branch at least.
https://github.com/websharks/s2member/blob/dev/src/includes/classes/custom-reg-fields.inc.php#L576

[raamdev]

@jaswsinc Ah, cool. Thank you. I didn't realize that was the same issue. I'll update the changelog for the next release to mention this issue and mark this as closed.