如何从对象数组中获取json字符串

Question

下面的代码给出了一个带有json对象的数组。但是我需要该数组的json字符串，以便以后可以使用json_decode。怎么做？

for($i=0;$i<5;$i++) 
{ foreach($allGames as $game) 
    { if($game['desc']==$sortGames[$i]) 
     { $text[$i]=array('Game_name'=>$game['desc'],'GameId'=>$game['gameId'],'order'=>$goalids,'length'=>$game['length']); 
      break; 
     } 
    } 
} 
$json_string=json_encode($text); 

$ json_string的值如下：

[{"Game_name":"a","GameId":"1697","order":["11022","11021","11020","11024","11023"],"length":"2.08783938975344"},{"Game_name":"b","GameId":"1800","order":["12196","12197","12194","12195","12193","12198"],"length":"1.16970835124072"}] 

Answer 1

for($i=0;$i<5;$i++) 
{ foreach($allGames as $game) 
    { if($game['desc']==$sortGames[$i]) 
     { $text[$i]=(array('Game_name'=>$game['desc'],'GameId'=>$game['gameId'],'order'=>json_decode($goalids),'length'=>$game['length'])); 
      break; 
     } 
    } 
} 
$json_string=json_encode($text);