Support » Installing WordPress » dashboard and site warning after upgrading to 2.9

  • Resolved ronaldb73


    I just had WP automatically updated to 2.9 and now, both dashboard and site itself (homepage) show this warning:

    Warning: array_reverse() [function.array-reverse]: The argument should be an array in /home/creatief/domains/ on line 790

    What’s wrong?

Viewing 5 replies - 1 through 5 (of 5 total)
  • esmi


    Forum Moderator

    Have you tried:

    – deactivating all plugins to see if this resolves the problem? If this works, re-activate the plugins one by one until you find the problematic plugin(s).

    – switching to the default theme to rule out any theme-related problems?

    switching to default or any other theme gives the same problems, with classic and default even an extra error:
    Warning: Cannot modify header information – headers already sent by (output started at /home/creatief/domains/ in /home/creatief/domains/ on line 868

    i’ll now try the plugins and upgrading on another site.

    got it. the plugin job manager makes trouble. After deactivating it, no more errors/warnings.

    wp-includes/rewrite.php line 788:
    $posts = get_page_hierarchy($wpdb->get_results(“SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = ‘page'”));

    either “get_page_hierarchy” or “$wpdb->get_results” can be null or empty if the blog have no page at all.
    so, i think its wise if we check $posts before feed it to array_reverse.

    line 795:
    if ( !$posts )
    return array( array(), array() );

    for short solution, i think we can move line 95-96 in the ealier lines before array_reverse.

    I implemented this solution and it was successful.

Viewing 5 replies - 1 through 5 (of 5 total)
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