Returns a single field from the next record of a result set.

Parameters

$index: The numeric index of the field to return. Defaults to the first field.

Return value

mixed A single field from the next record, or FALSE if there is no next record.

Overrides StatementInterface::fetchField

File

core/lib/Drupal/Core/Database/StatementWrapperIterator.php, line 215

Class

StatementWrapperIterator

StatementInterface iterator implementation.

Namespace

Drupal\Core\Database

Code

public function fetchField($index = 0) {
    // Call \PDOStatement::fetchColumn to fetch the field.
    $column = $this->clientStatement
        ->fetchColumn($index);
    if ($column === FALSE) {
        $this->markResultsetFetchingComplete();
        return FALSE;
    }
    $this->setResultsetCurrentRow($column);
    return $column;
}

---