public function DatabaseStatementPrefetch::fetchCol

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

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

Overrides DatabaseStatementInterface::fetchCol

File

core/includes/database/prefetch.inc, line 448

Database interface code for engines that need complete control over their result sets.

Class

DatabaseStatementPrefetch

An implementation of DatabaseStatementInterface that prefetches all data.

Code

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