Unexpected T_PAAMAYIM_NEKUDOTAYIM, expecting T_NS_Separator

Question

I moved an application from an Ubuntu 11.04 (Natty Narwhal) Server to a Red Hat Enterprise Linux (RHEL) server over the weekend. My error log is full of the PHP errors in the subject line referencing the following function:

function wfTalkHereArticleFromTitle( &$title, &$article ) {
    global $wgRequest, $wgTalkHereNamespaces;

    if (isset($title->noTalkHere))
        return true; //Stop recursion

    $action    = $wgRequest->getVal( 'action'    );
    $oldid     = $wgRequest->getVal( 'oldid'     );
    $diff      = $wgRequest->getVal( 'diff'      );

    if ($action == 'purge')
        $action = NULL; //"purge" is not considered an action in this context

    if ($action || $oldid || $diff)
        return true;

    $ns = $title->getNamespace();

    if (!Namespace::isTalk($ns) && Namespace::canTalk($ns) && $title->exists()
        && ( !$wgTalkHereNamespaces || in_array($ns, $wgTalkHereNamespaces) ) ) {

        $tns = Namespace::getTalk($ns);
        $talk = Title::makeTitle($tns, $title->getDBKey());

        if ($talk && $talk->userCan('read')) {
            $t = clone $title;
            $t->noTalkHere = true; //Stop recursion

            $a = MediaWiki::articleFromTitle( $t );
            $article = new TalkHereArticle( $a, $talk );
        }
    }
    return true;
}

The error is thrown in the

If (!Namespace::isTalk($ns)

statement. This error is a new one for me. How might I resolve it?

I changed the offending code to:

if ( !Ns::isTalk($ns) && Ns::canTalk($ns) && $title->exists()
    && ( !$wgTalkHereNamespaces || in_array($ns, $wgTalkHereNamespaces) ) ) {

    $tns = Ns::getTalk($ns);
    $talk = Title::makeTitle($tns, $title->getDBKey());

    if ($talk && $talk->userCan('read')) {
        $t = clone $title;
        $t->noTalkHere = true; //Stop recursion

        $a = MediaWiki::articleFromTitle( $t );
        $article = new TalkHereArticle( $a, $talk );
    }
}
return true;

Would that suffice to fix the error, at least in this file?

Answer 1

It looks like your new server is running PHP 5.3, while your old one was running an earlier version.

In PHP 5.3, namespace is a keyword, thanks to the new namespace feature.

Your existing Namespace class is going to need to be renamed. The parse error is occurring as the code tries to resolve Namespace::isTalk() into a namespace name. (The syntax for doing so would be something akin to namespace Foo; it becomes confused at seeing the :: resolution operator.)

Answer 2

PAAMAYIM_NEKUDOTAYIM is the name for the :: (it is Hebrew for twice colon)

Check all the lines that contain :: and make sure they are all correct calls.