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<?php $all_pages = array( 'home' => 'Home', 'about' => 'About us', 'gallery' => array( 'photo-gallery' => 'Photo Gallery', 'video-gallery' => 'Video Gallery' ), 'contact' => 'Contact us' ); $new = []; array_walk_recursive($all_pages, function($value, $key) use (&$new) { $new[$key] = $value; }); print_r($new);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [home] => Home [about] => About us [photo-gallery] => Photo Gallery [video-gallery] => Video Gallery [contact] => Contact us )

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