mongodb php cant push to end of array - php

Question

Hello i tried (permutated actually) every single way of inserting to in array in mongodb, nothing is working how im expecting it.
this is the structure of the document that i want to push into
["test123"]=>
array(6) {
["_id"]=>
string(7) "test123"
["products"]=>
array(1) {
[0]=>
array(9) {
["task_description"]=>
string(0) ""
["priority"]=>
string(4) "high"
["done"]=>
string(4) "true"
["extended_price"]=>
string(1) "0"
["unit_price"]=>
string(1) "0"
["qty"]=>
string(1) "0"
["description"]=>
string(18) "sample description"
["item"]=>
string(7) "Service"
["date_done"]=>
string(10) "2013-06-03"
}
}
["total"]=>
string(1) "0"
["tax"]=>
string(1) "0"
["discount"]=>
string(1) "0"
["currency"]=>
string(3) "EUR"
}
}
I want to push another array in the format of products[0] to products.
Here is the code that i try to do it with.
$collection->update(
array("_id" => $id),
// THIS REPLACES [0] ELEMENT IN ARRAY 'PRODUCTS' BUT I DONT WANT THAT
// array('$push' => array("products"=>array(0=>$data)))
// THIS IS NOT WORKING AT ALL
array('$push' => array('products' => $data))
);

Answer 1

What is the exact error you're seeing? Given the example document you shared, I can't reproduce either of your issues (products[0] being overwritten or the vague "this isn't working at all" comment).
I achieved the desired outcome with the following, which happens to match your code above:
$m = new MongoClient();
$c = $m->test->foo;
$c->drop();
// Create a document with a "p" array containing one embedded object
$c->insert(['p' => [['a' => 1, 'b' => 1]]]);
// This would add a second element to the "p" array, which would be
// a single-element array containing our embedded object
$c->update([], ['$push' => ['p' => [0 => ['a' => 2, 'b' => 2]]]]);
// This appends an embedded object to the "p" array
$c->update([], ['$push' => ['p' => ['a' => 2, 'b' => 2]]]);
// Debugging
var_export(iterator_to_array($c->find()));