用json_encode替換帶有自定義名稱的列namne

Question

我從db中引入json_encode數據。

foreach ($rslt as $val){ 
    $data[] = $val; 
} 
echo json_encode($data); 

輸出[{"column name":"dbData1"},{"column name":"dbData2"}]

代替列名我可以更換到自定義的名字？

預期輸出：

[{"rec":"dbData1"},{"rec":"dbData2"}] 

Answer 1

像這樣：

foreach ($rslt as $val){ 
    $data[] = array('rec'=>$val['column name']); 
} 
echo json_encode($data); 

Answer 2

<?php 
$arr = array('rec' => $val["col_name"], 'rec' => $val["col_name2"]); 

echo json_encode($arr); 
?>