note 115774 added to function.array-sum

If you want to check if there are for example only strings in an array, you can use a combination of array_sum and array_map like this: <?php function only_strings_in_array($arr) { return array_sum(array_map('is_string', $arr)) == count($arr); } $arr1 = array('one', 'two', 'three'); $arr2 = array('foo', 'bar', array()); $arr3 = array('foo', array(), 'bar'); $arr4 = array(array(), 'foo', 'bar'); var_dump( only_strings_in_array($arr1), only_strings_in_array($arr2), only_strings_in_array($arr3), only_strings_in_array($arr4) ); ?> This will give you the following result: bool(true) bool(false) bool(false) bool(false) ---- Server IP: 212.124.37.9 Probable Submitter: 5.146.27.132 ---- Manual Page -- http://php.net/manual/en/function.array-sum.php Edit -- https://master.php.net/note/edit/115774 Del: integrated -- https://master.php.net/note/delete/115774/integrated Del: useless -- https://master.php.net/note/delete/115774/useless Del: bad code -- https://master.php.net/note/delete/115774/bad+code Del: spam -- https://master.php.net/note/delete/115774/spam Del: non-english -- https://master.php.net/note/delete/115774/non-english Del: in docs -- https://master.php.net/note/delete/115774/in+docs Del: other reasons-- https://master.php.net/note/delete/115774 Reject -- https://master.php.net/note/reject/115774 Search -- https://master.php.net/manage/user-notes.php