如何用另一个数组中的值替换数组中的值？

问题描述：

I'm fetching an array:

$sql = SELECT id, name, state FROM table ORDER BY name
$result = mysqli_query($conn, $sql);
$rows = array();
$dict = ["A","B","C"];
while ($row = mysqli_fetch_array($result)) {
//replace state value here before next line
  $rows[] =  $row;
}

Values in the state field can be 0,1,2. I want to replace the value in key=state of $row with the value from $dict so 0=>A, 1=>B, 2=>C. Value in state field equals position of $dict array.
ex. if $row=["id"=>"1","name"=>"john", "state"=>"1"]
new $row=["id"=>"1","name"=>"john", "state"=>"B"]

答

You can use like that:

$dict = array("A","B","C");
$i = 0;
while ($row = mysqli_fetch_array($result)) {
   $rows[$i]['id'] =  $row['id'];
   $rows[$i]['name'] =  $row['name'];
   $rows[$i]['state'] =  $dict[$value['state']];
   $i++;
}

If your $dict index is fixed into three index than it will work perfectly.

Explanation:

$dict[$value['state']] this will get the value as per index value.

Like if $value['state'] == 1 than it will get the "B" from $dict array.

For the safe hand you can also use like that:

$rows[$i]['state'] =  (isset($dict[$value['state']]) ? $dict[$value['state']] : ''); // if not set than empty anything else that you want.

如何用另一个数组中的值替换数组中的值？

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