PHP: Remove empty array elements

June 3, 2010

I’ve run across a couple instances where I needed to either remove empty array elements or perform the equivalent of a trim() on PHP arrays. There are two pretty good ways to do this.

The first way involves building a custom function to loop through an array and unset empty elements like so:

function arrayRemoveEmpty($Array) {
	foreach($Array AS $k => $v) {
		if($Array[$k] == '') {
	return $Array;

The second is probably a more preferred, and certainly faster way. PHP has a built in function to handle filtering out empty elements, and it can be extended to do virtually anything you can imagine. Take a look:

$Array = array_filter($Array);
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