Returns an entire single column of a result set as an indexed array.

Note that this method will run the result set to the end.

Parameters

$index: The index of the column number to fetch.

Return value

array An indexed array, or an empty array if there is no result set.

Overrides StatementInterface::fetchCol

File

core/lib/Drupal/Core/Database/StatementWrapperIterator.php, line 159

Class

StatementWrapperIterator

StatementInterface iterator implementation.

Namespace

Drupal\Core\Database

Code

public function fetchCol($index = 0) {
    return $this->fetchAll(\PDO::FETCH_COLUMN, $index);
}

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