var_export($array) of an array gives me this:
array
(
0 => array ( 'id_20200514222532' => '4', ),
1 => array ( 'id_20200521123813' => '5', ),
2 => array ( 'id_20200521125410' => '8', ),
3 => array ( 'id_20200523003107' => '3', ),
4 => array ( 'id_20200523214047' => '2', ),
)
It should be sorted in descending order based on the numbers, so first 8, second 5 and so on...
You can use usort() for this, a sorter function that accepts a callback for comparing two values
usort($array, function ($a, $b) {
return reset($b) - reset($a);
});
That callback function we gave usort() will get two "random" items of the array.
I used reset($a) and reset($b) to get the first values out of the child arrays, then I compared them with a simple subtraction.