Check for multidimensional array

This snippet will return true is the parameter is a multidimensional array, else it will return false. It will also return false if the parameter is not a array.

Example of use:

if (is_multi_array($a))
      echo 'Multi!';
else
    echo 'Not multi!';

function is_multi_array($arr)
{
	if (!is_array($arr)) return false;
	$multi = array_filter($arr, 'is_array');
	return count($multi) > 0 ? true : false;
}

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