How to loop inside an array inside a loop in PHP

Question

Basically, what I'm trying to do is loop inside a loop and in arrays. I have no idea how to do it (that's why I'm here) and I've been testing many things.

As it sounds very confused I write down the code how it would be, but clearly that's not correct.

This below is what I've tried.

$whatever->insertOne(
    ['name' => 'whatever',
    'data' => array(
        for ($i = 0 ; $i < 50 ; $i++) { // <-first loop
            'something' => array(
                for ($j = 0 ; $j < 50 ; $j++) { // <-second loop
                    'somevalue' => array(
                        'date' => $date,
                        'value' => mt_rand(0,200)
                    ) 
                }
            )
        }
    )

    ]);

Answer 1

Try this out:

$data = array();
for ($j = 0 ; $j < 50 ; $j++) {
    for ($i = 0 ; $i < 50 ; $i++) {
        $data[$j]['something'][$i]['date'] => $date;
        $data[$j]['something'][$i]['value'] => mt_rand(0,200);
    }          
}
$whatever->insertOne(['name' => 'whatever','data' => $data]);

Answer 2

Loop need to be outside to create final array. Don't add loop inside an array.

You probably need something like below:-

$data = ['name' => 'whatever'];

for ($i = 0 ; $i < 50 ; $i++) {
  for ($j = 0 ; $j < 50 ; $j++) {
    $data[$i]['something'][$j]=['somevalue' => array('date' => $date,'value' => mt_rand(0,200));
  }
}

$whatever->insertOne($data);

Note: - you can print your array before insertOne() to check that you are getting array of correct format or some more manipulation needed.Thanks