php - 将键更改为列并将值更改为值 php

Question

数组是:

Array ( [0] => Array ( [dnu] => 121428 [d1] => 43 [d3] => 27 [d7] => 20 [d15] => 15 [d30] => 12 ) )

我想要这样的东西:

[{"col":"dnu","value":121428},{"col":"d1","value":"43"},{"col":"d7","value":"20"}]

Answer 1

试试这个。

$result = [];
foreach($array as $col => $value) {
    $result[] = [
         'col' => $col,
         'value' => $value
    ];
}

$json = json_encode($result);