Pass javascript array to php array

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Javascript

PHP

Hi guys... i would like to ask how do i pass my javascript array to php?
I have an array that got the result from a json_encode array like so

$.ajax({
type : "POST",
url : "includes/Filter.php",
datatype: 'json',
success: function(data){	

var obj = jQuery.parseJSON(data);
		
myArrayID= obj.ids;
}
});

now it retrieves the array just fine... but now i need to pass this array back to php and i want to retrieve it... how do i do that? by the way my array is an Associative array