false are considered as empty
values.
arrSort($array, $sort)
$array: array to be sorted
$sort : true sorts the array
vdump(arrSort([0 => 'foo', 1 => '', 2 => 'bar'])); //[0=>'foo', '2'=>'bar']
vdump(arrSort([0 => 'foo', 1 => '', 2 => 'bar'], true)); //[0=>'foo', '1'=>'bar']
vdump(arrSort([0 => 'foo', 1 => false])); //[0 => 'foo']
vdump(arrSort([0 => 0, 1 => 'bar'])); //[0=>0, '1'=>'bar']
vdump(arrSort([0 => [], 1 => 'bar'])); //[0=>[], '1'=>'bar']