function StatementPrefetch::fetchCol

Same name in other branches
  1. 8.9.x core/lib/Drupal/Core/Database/StatementPrefetch.php \Drupal\Core\Database\StatementPrefetch::fetchCol()
  2. 10 core/lib/Drupal/Core/Database/StatementPrefetch.php \Drupal\Core\Database\StatementPrefetch::fetchCol()

Overrides StatementInterface::fetchCol

File

core/lib/Drupal/Core/Database/StatementPrefetch.php, line 551

Class

StatementPrefetch
An implementation of StatementInterface that prefetches all data.

Namespace

Drupal\Core\Database

Code

public function fetchCol($index = 0) {
    if (isset($this->columnNames[$index])) {
        $result = [];
        // Traverse the array as PHP would have done.
        while (isset($this->currentRow)) {
            $result[] = $this->currentRow[$this->columnNames[$index]];
            $this->next();
        }
        return $result;
    }
    else {
        return [];
    }
}

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