[英]Find value from key in JSON Array
如何檢查JSON數組中存在哪個JSON值? 這是我的解決方案:
var jsonArr = "[{"F_1":"c4024087","F_2":"9a565962","F_3":"23026","F_4":"John","F_5":"Doe"},{"F_1":"dbb88908","F_2":"bc6fd3bb","F_3":"19727","F_4":"Mike","F_5":"Long"}]"
查找值:
var toFind = "9a565962";
var checkObj = jsonArr.find(o => o.F_2 == toFind );
if (typeof checkObj === "undefined") {
console.log("Value " + toFind + " not exists in Array. Do something!");
} else (Object.keys(checkObj).length > 0) {
console.log("Value " + toFind + " exists in Array. Do something else");
}
這是在數組中查找值的最佳方法嗎?
$jsondata = file_get_contents("/json/API.php");
$array = json_decode($jsondata,true);
foreach($array as $k=>$val):
if($id =! $val){
echo '<b>id: '.$k.'</b></br>';
$keys = array_keys($val);
foreach($keys as $key):
echo ' '.ucfirst($key).' = '.$val[$key].'</br>';
endforeach;
endforeach;
}
可能會解決您的問題
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