Online PHP editor | refs for fSpWm

<?php $books_sorted = array( 0 => array( "title" => "In Search of Lost Time" ), 1 => array( "title" => "Don Quixote" ), 2 => array( "title" => "The Great Gatsby" ) ); $books_available = array( 0 => array( "title" => "Moby Dick" ), 1 => array( "title" => "In Search of Lost Time" ), 2 => array( "title" => "The Great Gatsby" ), 3 => array( "title" => "War and Peace" ) ); $sorted_titles = array_column($books_sorted, 'title'); $available_titles = array_column($books_available, 'title'); $third_array = array_merge( array_filter($books_sorted, function($e) use ($available_titles) { return in_array($e['title'], $available_titles); }), array_filter($books_available, function($e) use ($sorted_titles) { return !in_array($e['title'], $sorted_titles); }) ); print_r($third_array);