#array pq\Result::fetchAllCols([int $col = 0])

Fetch all rows of a single column.

Params:#

• Optional int $col# = 0
  The column name or index to fetch.

Returns:#

• array, list of column values.

Throws:#

• pq\Exception\InvalidArgumentException
• pq\Exception\BadMethodCallException
• pq\Exception\RuntimeException

Example:#

<?php

/* Of the following result set:

                id | name
                ---|------
                 1 | ann
                 2 | barb 
                 3 | john 
                 4 | mike 
                
*/

$result->fetchAllCols(0);    /*     this call would fetch:
                                array(4) {
                                    int(1),
                                    int(2),
                                    int(3),
                                    int(4)
                                }
                            */
                            
$result->fetchAllCols("name");    /*     this call would fetch:
                                    array(4) {
                                        string(3) "ann",
                                        string(4) "barb",
                                        string(4) "john",
                                        string(4) "mike"
                                    }
                                */