$url = ("http://localhost/webservisler/jsonlar/jsonolustur.php");
$json = file_get_contents($url); 
$ogr = json_decode($json);
var_dump($ogr);

// ön izlemesi
array (size=3)
  0 => 
    object(stdClass)[1]
      public 'mid' => string '80000026' (length=8)
      public 'parti' => string '0500147668' (length=10)
      public 'metre' => string '17.20' (length=5)
  1 => 
    object(stdClass)[2]
      public 'mid' => string '80000026' (length=8)
      public 'parti' => string '0500064675' (length=10)
      public 'metre' => string '8.20' (length=4)
  2 => 
    object(stdClass)[3]
      public 'mid' => string '80000026' (length=8)
      public 'parti' => string '0500064682' (length=10)
      public 'metre' => string '8.00' (length=4)

// veya bunu nasıl listelerim
$ogr = json_decode($json,true);
var_dump($ogr)

array (size=3)
  0 => 
    array (size=3)
      'mid' => string '80000026' (length=8)
      'parti' => string '0500147668' (length=10)
      'metre' => string '17.20' (length=5)
  1 => 
    array (size=3)
      'mid' => string '80000026' (length=8)
      'parti' => string '0500064675' (length=10)
      'metre' => string '8.20' (length=4)
  2 => 
    array (size=3)
      'mid' => string '80000026' (length=8)
      'parti' => string '0500064682' (length=10)
      'metre' => string '8.00' (length=4)