Indefinite variable PHP error

The issue is caused by an undefined variable in your PHP code. Here’s how to fix it.

Initialize Variables: Ensure variables are defined before use. Modify the PHP code to check if a variable is set:

$variable = isset($variable) ? $variable : 'default_value';

Check Theme or Plugin Code: Go to the specific theme or plugin file causing the issue (often in functions.php or a custom template) and make sure all variables are initialized properly.

Enable Debugging: To log errors and pinpoint the exact issue, add this to wp-config.php:

define( 'WP_DEBUG', true ); define( 'WP_DEBUG_LOG', true ); define( 'WP_DEBUG_DISPLAY', false ); @ini_set( 'display_errors', 0 );

Update Plugins/Themes: Ensure your theme and plugins are updated to avoid compatibility issues.

• This reply was modified 1 week, 6 days ago by imfaizan.

If the $terms variable is not an array, it falls into the else part where $term_name8 is set to an empty string, and $term_name8_str is assigned a default translation. However, if those variables are later used without checking their definitions, it could lead to undefined variable warnings. Also get_the_terms() can return different values like an array of WP_Term objects, false, or a WP_Error object. I updated the code a little bit:

$lang = substr(get_locale(), 0, 2);
$terms = get_the_terms(get_the_ID(), 'postoauto');
$trans = __('No parking place', 'sacconicase') . '.';

$term_name8 = '';
$term_name8_str = $trans;

// Check if $terms is not a WP_Error and is an array
if (!is_wp_error($terms) && is_array($terms) && !empty($terms)) {
    $term = $terms[0];
    if ($lang == 'it') {
        $term_name8 = $term->name;
        $term_name8_str = empty($term_name8) ? '' : "$term_name8. ";
    } else {
        $term_name8 = get_term_meta($term->term_id, 'postoauto_' . $lang, true);
        $term_name8_str = empty($term_name8) ? '' : "$term_name8. ";
    }
}

I still get an error message ??

ok, probably I forgot to delete a variable in the return ( $nopostoauto ) that had no longer reason to stay there, I’ll do some tests, sorry for the confusion

• This reply was modified 1 week, 6 days ago by sacconi.