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    • Undefined array key _filter in Tiki30

    Posted by Bernard Sfez / Tiki Specialist

    In my php error log I see several:

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    [09-Jul-2026 10:04:49 Asia/Jerusalem] PHP Warning:  Undefined array key "_filter" in /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php on line 121
[09-Jul-2026 10:04:49 Asia/Jerusalem] PHP Warning:  Undefined array key "_filter" in /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php on line 119
[09-Jul-2026 09:23:45 Asia/Jerusalem] PHP Warning:  Undefined array key "_filter" in /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php on line 123
[09-Jul-2026 09:23:45 Asia/Jerusalem] PHP Warning:  Undefined array key "_filter" in /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php on line 121
[09-Jul-2026 09:23:45 Asia/Jerusalem] PHP Warning:  Undefined array key "_filter" in /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php on line 119
[09-Jul-2026 09:08:44 Asia/Jerusalem] PHP Warning:  Undefined array key "_filter" in /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php on line 123
[09-Jul-2026 09:08:44 Asia/Jerusalem] PHP Warning:  Undefined array key "_filter" in /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php on line 121
[09-Jul-2026 09:08:44 Asia/Jerusalem] PHP Warning:  Undefined array key "_filter" in /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php on line 119


    This seems to be PHP8.x being strict.

    At /home/domain/public_html/lib/core/Services/Search/CustomSearchController.php I added a temporary variable to avoid the warning. From line 117 to 137 I changed to:

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    $filter = 'content'; //default
if (isset($config['_filter']) || $name == 'categories' || $name == 'daterange' || $name == 'distance') {
    // Safely extract _filter value to avoid PHP 8+ undefined key warnings
    $configFilterVal = $config['_filter'] ?? null;

    if ($configFilterVal === 'language') {
        $filter = 'language';
    } elseif ($configFilterVal === 'type') {
        $filter = 'type';
    } elseif ($configFilterVal === 'categories' || $name == 'categories') {
        $filter = 'categories';
    } elseif ($name == 'daterange') {
        $filter = 'daterange';
    } elseif ($configFilterVal === 'multivalue') {
        $filter = 'multivalue';
    } elseif ($configFilterVal === 'exact') {
        $filter = 'exact';
    } elseif ($name == 'distance') {
        $filter = 'distance';
        if (! $input->sort_mode->text()) {
            $config['sort'] = true;
        }
    }
}


    Reads: 626
    Posted by Jonny Bradley

    Hi Bernard

    Did you try searching for "_filter" in your wiki pages (and smarty tpls if you have them). Presumably it's in there somewhere?

    jb