PHP数组我怎么能在我的数组中添加一个额外的项目（while循环）

Question

I have this code, but how can i add an extra item in the array? In this example i want to add an array with a 'slug'-title. This doesn't work.

$interviewresult = $db->query($interviewsql);
$interviewdata = $interviewresult->fetch_assoc();
$interviewdata['slug'] = $slug->create($interviewdata['title']);

while($interviewtrackerlist = $interviewresult->fetch_assoc()) {
    $interviewtracker_list[] = $interviewdata;
}

echo "<pre>".print_r($interviewtracker_list,1)."</pre>";

This gives a repeat of an item:

Array
(
    [0] => Array
        (
            [id] => 4041
            [title] => Interview: Blaat.nl
            [date_posted] => 2014-05-01 10:13:09
            [wanneer] => 01-05
            [slug] => interview-blaat-nl
        )

    [1] => Array
        (
            [id] => 4041
            [title] => Interview: Blaat.nl
            [date_posted] => 2014-05-01 10:13:09
            [wanneer] => 01-05
            [slug] => interview-blaat-nl
        )

    [2] => Array
        (
            [id] => 4041
            [title] => Interview: Blaat.nl
            [date_posted] => 2014-05-01 10:13:09
            [wanneer] => 01-05
            [slug] => interview-blaat-nl
        )

)

But i want to have a array like this:

Array
(
    [0] => Array
        (
            [id] => 4041
            [title] => Interview: Blaat.nl
            [date_posted] => 2016-05-01 10:13:09
            [wanneer] => 01-05
            [slug] => interview-blaat-nl
        )

    [1] => Array
        (
            [id] => 4042
            [title] => Interview: Yaddah Yaddah
            [date_posted] => 2016-05-10 22:53:49
            [wanneer] => 01-05
            [slug] => interview-yaddah-yaddah
        )

    [2] => Array
        (
            [id] => 4043
            [title] => Interview: Pete Puck
            [date_posted] => 2016-10-07 21:13:08
            [wanneer] => 01-05
            [slug] => interview-pete-puck
        )

)

How can i do this?

Answer 1

Look at this line inside your while loop,

$interviewtracker_list[] = $interviewdata;
                                  ^ look here

In each iteration of the loop you're pushing the same data to the array. Your code should be like this:

$interviewresult = $db->query($interviewsql);
$interviewtracker_list = array();
while($interviewdata = $interviewresult->fetch_assoc()){
    $interviewdata['slug'] = $slug->create($interviewdata['title']);
    $interviewtracker_list[] = $interviewdata;
}

// display $interviewtracker_list array
var_dump($interviewtracker_list);

Answer 2

Be simple.

Get result, iterate it, and change or add field inside of loop:

$interviewresult = $db->query($interviewsql);
while($interviewdata = $interviewresult->fetch_assoc()) {
    $interviewdata['slug'] = $slug->create($interviewdata['title']);
    $interviewtracker_list[] = $interviewdata;
}