配列の項目をアンセットし、jsonオブジェクトを更新します

Question

私は以下のようなjsonを持っていますが、それから配列の値を設定解除し、 "pstsg"の配列のようにjsonを更新したいのですが、 json

"g": { 
    "mid": 1478144134757, 
    "gid": "0021600062", 
    "gdte": "2016-11-02", 
    "htm": "2016-11-02T19:00:00", 
    "vtm": "2016-11-02T20:00:00", 
    "etm": "2016-11-02T21:00:00", 
    "gdtutc": "2016-11-03", 
    "utctm": "01:00", 
    "ac": "Salt Lake City", 
    "as": "UT", 
    "gcode": "20161102/DALUTA", 
    "next": "http://abcd.json", 
    "ar": 0, 
    "p": 4, 
    "st": 3, 
    "stt": "Final", 
    "cl": "00:00.0", 
    "lpla": { 
     "evt": 493, 
     "cl": "00:00.0", 
     "de": "End Period", 
     "locX": 0, 
     "locY": -80, 
     "opt1": 0, 
     "opt2": 0, 
     "mtype": 0, 
     "etype": 13, 
     "opid": "", 
     "tid": 0, 
     "pid": 0, 
     "hs": 97, 
     "vs": 81, 
     "epid": "", 
     "oftid": 1610612762 
    }, 
    "vls": { 
     "q1": 14, 
     "s": 81, 
     "ftout": 0, 
     "stout": 1, 
     "ta": "DAL", 
     "tstsg": { 
      "fga": 77, 
      "fgm": 33, 
      "tpa": 26, 
      "tpm": 7, 
      "fta": 10, 
      "ftm": 8, 
      "oreb": 6, 
      "dreb": 30, 
      "reb": 36, 
      "ast": 18, 
      "stl": 4, 
      "blk": 4, 
      "pf": 20, 
      "tov": 12, 
      "fbpts": 0, 
      "fbptsa": 1, 
      "fbptsm": 0, 
      "pip": 28, 
      "pipa": 27, 
      "pipm": 14, 
      "ble": 1, 
      "bpts": 32, 
      "tf": 2, 
      "scp": 0 
     }, 
     "pstsg": [ 
      { 
       "fn": "Harrison", 
       "ln": "Barnes", 
       "num": "40", 
       "pos": "F", 
       "min": 35, 
       "sec": 42, 
       "totsec": 2142, 
       "fga": 13, 
       "fgm": 6, 
       "tpa": 3, 
       "tpm": 0, 
       "fta": 2, 
       "ftm": 2, 
       "oreb": 0, 
       "dreb": 2, 
       "reb": 2, 
       "ast": 1, 
       "stl": 0, 
       "blk": 1, 
       "pf": 1, 
       "pts": 14, 
       "tov": 1, 
       "fbpts": 0, 
       "fbptsa": 0, 
       "fbptsm": 0, 
       "pip": 0, 
       "pipa": 1, 
       "pipm": 0, 
       "court": 0, 
       "pid": 203084, 
       "pm": -13, 
       "blka": 0, 
       "tf": 0, 
       "status": "A" 
      }, 
      { 
       "fn": "Dirk", 
       "ln": "Nowitzki", 
       "num": "41", 
       "pos": "F", 
       "min": 0, 
       "sec": 48, 
       "totsec": 1728, 
       "fga": 14, 
       "fgm": 4, 
       "tpa": 5, 
       "tpm": 0, 
       "fta": 1, 
       "ftm": 1, 
       "oreb": 1, 
       "dreb": 4, 
       "reb": 5, 
       "ast": 0, 
       "stl": 1, 
       "blk": 0, 
       "pf": 3, 
       "pts": 9, 
       "tov": 1, 
       "fbpts": 0, 
       "fbptsa": 0, 
       "fbptsm": 0, 
       "pip": 8, 
       "pipa": 5, 
       "pipm": 4, 
       "court": 0, 
       "pid": 1717, 
       "pm": -20, 
       "blka": 1, 
       "tf": 0, 
       "status": "A" 
      }, 

私がしたいのは、削除されていない配列値と更新jsonオブジェクトです。

foreach ($gdUrl_data as $key => $value) { 
    $vpstgcount = count($value["vls"]["pstsg"]); 
    for ($j = 0; $j <$vpstgcount; $j++) { 
     $minVal = $value["vls"]["pstsg"][$j]["min"]; 
     if ($minVal == 0) 
     { 
      unset($value["vls"]["pstsg"][$j]); 
     } 
    } 
    } 
    $gdUrl_data = json_encode($gdUrl_data); 

これは配列の設定を解除しますが、jsonを更新しません。

Answer 1

function unsetKey($json, $key) { 
    $json = json_decode($json, true); 
    unset($json[$key]); 
    return json_encode($json); 
} 

Answer 2

$valueは配列要素のコピーです。その部分を設定解除すると元の配列には影響しません。実際の配列要素にする場合は、参照変数を使用します。

foreach ($gdUrl_data as &$value) { 
    foreach ($value["vls"]["pstg"] as $j => $el) { 
     if ($el["min"] == 0) { 
      unset($value[$j]); 
     } 
    } 
}