isnullorempty

I've been looking a lot of answers, but none of them are working for me. This is the data assigned to my $quantities array: Array( [10] => Array([25.00] => 1) [9] => Array([30.00] => 3) [8] => Array([30.00] => 4) [12] => Array([35.00] => ) [1] => Array([30.00] => ) [2] => Array([30.00] => ) ) I'm looking for a way to remove the subarrays with empty values like [12] [1] and [2] while keeping everything else. The desired result: Array( [10] => Array([25.00] => 1) [9] => Array([30.00] => 3) [8] => Array([30.00] => 4) ) I tried a lot of the functions on the official php docs and none of them

Is there a JavaScript equivalent to .NET's String.IsNullOrWhitespace so that I can check if a textbox on the client-side has any visible text in it? I'd rather do this on the client-side first than post back the textbox value and rely only on server-side validation, even though I will do that as well. It's easy enough to roll your own : function isNullOrWhitespace( input ) { if (typeof input === 'undefined' || input == null) return true; return input.replace(/\s/g, '').length < 1; } For a succinct modern cross-browser implementation, just do: function isNullOrWhitespace( input ) { return