PHP-從JSON提取數據

Question

我有一個JSON文件，正在努力獲取數據。 這是JSON。

{"data":[
        {"tag":"operatingrevenue","value":215639000000.0},
        {"tag":"totalrevenue","value":215639000000.0},
        {"tag":"operatingcostofrevenue","value":131376000000.0},
        {"tag":"totalcostofrevenue","value":131376000000.0},
        {"tag":"totalgrossprofit","value":84263000000.0},
        {"tag":"sgaexpense","value":14194000000.0},
        {"tag":"rdexpense","value":10045000000.0},
        {"tag":"totaloperatingexpenses","value":24239000000.0},
        {"tag":"totaloperatingincome","value":60024000000.0},
        {"tag":"otherincome","value":1348000000.0},
        {"tag":"totalotherincome","value":1348000000.0},
        {"tag":"totalpretaxincome","value":61372000000.0},
        {"tag":"incometaxexpense","value":15685000000.0},
        {"tag":"netincomecontinuing","value":45687000000.0},
        {"tag":"netincome","value":45687000000.0},
        {"tag":"netincometocommon","value":45687000000.0},
        {"tag":"weightedavebasicsharesos","value":5470820000.0},
        {"tag":"basiceps","value":8.35},
        {"tag":"weightedavedilutedsharesos","value":5500281000.0},
        {"tag":"dilutedeps","value":8.31},
        {"tag":"weightedavebasicdilutedsharesos","value":5471500000.0},
        {"tag":"basicdilutedeps","value":8.35},
        {"tag":"cashdividendspershare","value":2.18}]

我正在使用將其轉換為數組

$data = json_decode($jsondata, true);

然后，我可以通過以下方式提取數據：

$operatingRevenue = $data['data'][0]['value'];
$totalrevenue = $data['data'][1]['value'];

等等，但是，我想使用標簽名稱，而不僅僅是使用順序，以防JSON中順序發生變化。 就像是

$operatingRevenue = $data['data']['operatingRevenue'];

Answer 1

迭代$data數組，並將數組中新元素的鍵設置為tag元素，並將其值設置為value元素。

foreach($data['data'] as $v)
    $array[$v['tag']] = $v['value'];

$array包含您想要的內容，像這樣訪問： $array['operatingRevenue']

Answer 2

迭代$ data並使用array_push。 在這里閱讀。 https://www.w3schools.com/php/func_array_push.asp

$data = json_decode($jsondata, true);
$datas = [];
foreach($data['data'] as $val){
   array_push($datas,["tag"=>$val['tag'],"value"=>$val['tag']])
}