php - How can I retrieve array of db results and make all possible combination of pairs? -

can me please:

this code:

 <?php  //...db connection code ...   function icecream($flavs, $size, $combinations = array()) {     if (empty($combinations))     {        $combinations = $flavs;     }      if ($size == 1)     {        return $combinations;     }      $new_combinations = array();      foreach ($combinations $combination)     {        foreach ($flavs $flav)        {           $new_combinations[] = $combination .' - '. $flav;        }     }      return icecream($flavs, $size - 1, $new_combinations);  }   $sql = ("select name eissorten");  $result = mysqli_query($conn, $sql);   while ($row = mysqli_fetch_array($result))  {     $ice_all[] = $row['name'];  }  $ice_all = implode(', ',$ice_all);   $flavs = array('vanilla', 'strawberry', 'chocolate', 'stracciatella');  $output = icecream($flavs, 2);   foreach($output $outputs)  {     echo $outputs.'<br>';  }   ?> 

it giving me possible flavour combinations with:

 $flavs = array('vanilla', 'strawberry', 'chocolate', 'stracciatella'); 

but need populate array $row['name'] database, when do:

 $flavs = array($ice_all); 

then gives me complete string of flavours. do wrong?