php - JSON Response Multidimensional Array -

hello got json response looks 1 below. want count posts younger 24 hours , check unique user urls:

{      "meta":{         "network":"all",       "query_type":"realtime"    },    "posts":[         {            "network":"facebook",          "posted":"2014-08-16 08:31:31 +00000",          "sentiment":"neutral",          "url":"someurl",          "user":{               "name":"terance podolski",             "url":"someurl",             "image":"someurl"          }       },       {            "network":"facebook",          "posted":"2014-08-16 08:30:44 +00000",          "sentiment":"neutral",          "url":"someurl",          "user":{               "name":"Łukasz podolski",             "url":"someurl",             "image":"someurl"          }       },       {            "network":"facebook",          "posted":"2014-08-16 08:25:39 +00000",          "sentiment":"neutral",          "url":"someurl",          "user":{               "name":"marcin podolski",             "url":"someurl",             "image":"someurl"          }       } ] } 

thanks in advance.

with of @elias van ootegem got problem solved. code looks that:

// json reponse decodieren $jsonarray = json_decode($jsondata);    function getmentionsfromlast24h($myarray){     // set variable 1 day ago     $since = new datetime('-1 day');      // array store timestamps in     $recent = array();      foreach ( $myarray -> posts $post ) {          try {             $post -> posted = new datetime (substr ( $post->posted,0,19 ) );//create datetime instance             if ( $post -> posted >= $since )                 $recent[] = $post;//add array         } catch ( exception $e ) {             echo $e -> getmessage();             exit(1);         }      }      return $recent;  }  $mentions24h = count(getmentionsfromlast24h($jsonarray));  print_r($mentions24h); 

it's pretty simple, really: decode json data, compare posted values time - 24 hours, if value great time-24 hours, add array. that's it, you'll end array containing posts added in last 24 hours:

$data = json_decode($jsondata);//creates object $since = new datetime('yesterday'); $recent = array();//this array we'll constructing foreach ($data->posts $post) {     $post->posted = new datetime($post->posted);//create datetime instance     if ($post->posted > $since)         $recent[] = $post;//add array } var_dump($recent);//this array you're after 

that there it.