(PHP) Initialize empty multidimensional array and then fill it - php

Question

I want to create an array with 3 types of information: name, id, and work.
First I want to just initialize it, so that I can later fill it with data contained in variables.
I searched how to initialize a multidimensional array, and how to fill it, and that's what I came up with:
$other_matches_info_array = array(array());
$other_matches_name = "carmen";
$other_matches_id = 3;
$other_matches_work = "SON";
array_push($other_matches_info_array['name'], $other_matches_name);
array_push($other_matches_info_array['id'], $other_matches_id);
array_push($other_matches_info_array['work'], $other_matches_work);
This is what I get when I print_r the array:
Array
(
[0] => Array
(
)
[name] =>
)
What did I do wrong?

Answer 1

very short answer:
$other_matches_info_array = array();
// or $other_matches_info_array = []; - it's "common" to init arrays like this in php
$other_matches_name = "carmen";
$other_matches_id = 3;
$other_matches_work = "SON";
$other_matches_info_array[] = [
'id' => $other_matches_id,
'name' => $other_matches_name
];
// so, this means: new element of $other_matches_info_array = new array that is declared like this.

Answer 2

You can simply create it like so:
$arrayMultiDim = [
[
'id' => 3,
'name' => 'Carmen'
],
[
'id' => 4,
'name' => 'Roberto'
]
];
Then later to add to just say:
$arrayMultiDim[] = ['id' => 5, 'name' => 'Juan'];

Answer 3

Try code below:
$other_matches_info_array_main = [];
$other_matches_name = "carmen";
$other_matches_id = 3;
$other_matches_work = "SON";
$other_matches_info_array['name'] = $other_matches_name;
$other_matches_info_array['id'] = $other_matches_id;
$other_matches_info_array['work'] = $other_matches_work;
$other_matches_info_array_main[] = $other_matches_info_array;
Demo