Create PHP array from MySQL column

Question

mysql_fetch_array will give me an array of a fetched row. What\'s the best way generate an array from the values of all rows in one column?

Answer 1

If you use PDO instead of php-mysql the return value of PDO::query() implements the Traversable interface, meaning you can use it e.g. with foreach() (unlike the mysql result resource you get from mysql_query).

foreach( $pdo->query('SELECT x,y,z FROM foo') as $row ) {

And in case this does not suffice and you really, really need an array (i.e. get_class($x)==='Array'), there's the fetchAll() method.