Question

Table stores

id  name  date
1   foo   2011-06-15 15:10:34
2   bar   2011-07-02 16:45:18

Table locations

storeid  zipcode  latitude  longitude
1        90001    xxxxx     xxxxx
1        45802    xxxxx     xxxxx
2        32843    xxxxx     xxxxx

How can i produce an associative array that contains a key called locations which is an array of all locations of a store?

My current SQL ( which separate each location in a record ):

SELECT stores.*, locations.* FROM locations INNER JOIN stores ON stores.id = locations.storeid

Example of what i want:

array(
 [0] => array(
           "id" => 1,
           "name" => "foo",
           "locations" => array(
                           [0] => array(
                                    "zipcode" => 90001,
                                    "latitude" => -45.48513,
                                    "longitude" => 82.12432
                                   )
                           [1] => array(
                                    "zipcode" => 42802,
                                    "latitude" => -31.48513,
                                    "longitude" => 77.12432
                                   )
                          ) 
         )
)

and so on for other stores…

Thanks

Answer 1

So you can’t extract the data in one query because SQL normally works per row and hasn’t got data structure like PHP arrays. You can’t nest the records using JOIN. That’s why you’ll have to do it with with separate queries in a PHP loop. Like so:

$query = "SELECT s.id,s.name FROM stores AS s";

$result = mysql_query($query);
$data = array();
while($row = mysql_fetch_assoc( $result )) {
    $data[] = $row['id'];
    $data[] = $row['name'];

    $query2 = "SELECT l.zipcode, l.latitude, l.longitude FROM locations AS l WHERE storeid=".$row['id'];

    $result2 = mysql_query($query2);
    while($row2 = mysql_fetch_assoc( $result )) {
        $data['locations']['zipcode'] = $row2['zipcode'];
        $data['locations']['latitude'] = $row2['latitude'];
        $data['locations']['longitude'] = $row2['longitude'];
    }
}

Otherwise you can grab all results with JOIN and do as follows:

$query = "SELECT * FROM stores AS s 
LEFT JOIN locations AS l
ON s.id = l.storesid";

$result = mysql_query($query);
$data = array();
while($row = mysql_fetch_assoc( $result )) {
    $data[$row[id]]['id'] = $row['id'];
    $data[$row[id]]['name'] = $row['name'];
    $data[$row[id]]['locations'][] = array($row['zipcode'], $row['latitude'], $row['longitude']);
}

But this will make the main array’s index to be set not sequential starting from 0 but each index will be equal to the ID of the “store” item