wpsnoop Function wvsso_check_illegal_chars() conflicts found in 2 plugins

A php function called wvsso_check_illegal_chars() is used in 2 wordpress plugins/themes and could produce a potential conflict if the wrong combination of themes and plugins is used on your site.

To prevent this from happening developers are encouraged to use namespaces and scopes that isolate their functions from colliding with other functions but this is not always done correctly.

We hope this reference helps you to find PHP Fatal error: Cannot redeclare wvsso_check_illegal_chars()

The following 2 plugins register a function called wvsso_check_illegal_chars():

Plugin
SSO vBulletin
WP vBulletin SSO