*
reIndex
For an array of assoc rays, return a new array of assoc rays using a certain field for keys
| public static reIndex ( ) |
function test_4_null()
{
DB::query("UPDATE accounts SET password = NULL WHERE username=%s", 'Bart');
$all = DB::query("SELECT * FROM accounts ORDER BY id ASC");
$ages = DBHelper::verticalSlice($all, 'age', 'password');
$this->assert(count($ages) === 5);
$this->assert($ages[''] === '15');
$passwords = DBHelper::reIndex($all, 'password');
$this->assert(count($passwords) === 5);
$this->assert($passwords['']['username'] === 'Bart');
$this->assert($passwords['']['password'] === NULL);
}
