function StatementWrapperIterator::fetchField

Overrides StatementInterface::fetchField

File

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

Class

StatementWrapperIterator

StatementInterface iterator implementation.

Namespace

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;
}