Untitled

Build a specific querystring from an array of results
$car[] = array ("id"=>"1", "brand"=>"Audi", "price"=>"7000");
$car[] = array ("id"=>"9", "brand"=>"Merc", "price"=>"9000");

&brand0=Audi&brand1=Merc&id0=1&id1=9&price0=7000&price0=9000

$params = array();
for($i=0;$i<count($car);$i++) {
    $params[] = 'id' . $i . '=' . $car[$i]['id'];
    $params[] = 'brand' . $i . '=' . $car[$i]['brand'];
    $params[] = 'price' . $i . '=' . $car[$i]['price'];
}
$string = implode('&', $params);

$url = http_build_query(array("car" => $car));

&car[0][brand]=Audi&car[1][brand]=Merc&car[0][id]=1&car[1][id]=9&car[0][price]=7000&car[1][price]=9000

$data = array();
$i = 0;
foreach ($car as $k=>$v)
{
   $data[] = $k . '_' . $i .'=' . $v;
   $i++;
}
echo implode('&', $data);

$data = array();
$i = 0;
foreach ($car as $c)
{
   foreach ($c as $k=>$v);
      data[] = $k . '_' . $i . '=' . $v;
   $i++;
}
echo implode ('&', $data);

$str = "";
foreach($car as $key => $val){
    $str .= "$key=$val&";
}
$str = substr($str, 0, strlen($str) - 2);