I want to apply a function to each element/prop of an object but it seems array_walk_recursive() does not work on object. i.e:
if( $re = $con->query("SELECT id, created_date, contents FROM " . POST_DATA . " WHERE type = 'news' ORDER BY ". "created_date DESC LIMIT $amount") ) { if( $re->num_rows != 0 ) { while( $ob = $re->fetch_object() ) { $ob = array_walk_recursive( $ob, "_output" ); print_r($ob); die(); } } } would simply return '1'.
How might I resolve this?
It's actually returning a value of True for array_walk_recursive. If you look at the function's documentation, you'll see that what this method is doing is calling the function _output for each item and key in the object.
You should also have some code that looks similar to this, I would imagine, to get it to work correctly:
function _output($data, $key) { echo "For the key $key, I got the data: "; print_r($data); } Where _output is called because that is the stringified name that you gave in the array_walk_recursive function. That should print your values to the screen.
Edit:
It seems that I'm not actually answering what you were originally wanting to do, though. If you're wanting to apply a function to every element of an array, I would suggest that you look at array_map. You can use array_map like this:
function double($item) { return 2 * $item; } array_map('double', $item); Ultimately, if the recursion is something that you desire, you could probably do something like this:
function callback($key, $value) { // do some stuff } function array_map_recursive($callback, $array) { $new_array = array() foreach($array as $key => $value) { if (is_array($value)) { $new_array[$key] = array_map_recursive($callback, $value); } else { $new_array[$key] = call_user_func($callback, $key, $value); } } return $new_array; } array_map_recursive('callback', $obj); That would return another array like $obj, but with whatever the callback was supposed to do.
