--TEST-- Test array_column() function: testing with objects --FILE-- id = $id; $this->first_name = $first_name; $this->last_name = $last_name; } } function newUser($id, $first_name, $last_name) { $o = new stdClass; $o->{0} = $id; $o->{1} = $first_name; $o->{2} = $last_name; return $o; } class Something { public function __isset($name) { return $name == 'first_name'; } public function __get($name) { return new User(4, 'Jack', 'Sparrow'); } } $records = array( newUser(1, 'John', 'Doe'), newUser(2, 'Sally', 'Smith'), newUser(3, 'Jane', 'Jones'), new User(1, 'John', 'Doe'), new User(2, 'Sally', 'Smith'), new User(3, 'Jane', 'Jones'), new Something, ); echo "*** Testing array_column() : object property fetching (numeric property names) ***\n"; echo "-- first_name column from recordset --\n"; var_dump(array_column($records, 1)); echo "-- id column from recordset --\n"; var_dump(array_column($records, 0)); echo "-- last_name column from recordset, keyed by value from id column --\n"; var_dump(array_column($records, 2, 0)); echo "-- last_name column from recordset, keyed by value from first_name column --\n"; var_dump(array_column($records, 2, 1)); echo "*** Testing array_column() : object property fetching (string property names) ***\n"; echo "-- first_name column from recordset --\n"; var_dump(array_column($records, 'first_name')); echo "-- id column from recordset --\n"; var_dump(array_column($records, 'id')); echo "-- last_name column from recordset, keyed by value from id column --\n"; var_dump(array_column($records, 'last_name', 'id')); echo "-- last_name column from recordset, keyed by value from first_name column --\n"; var_dump(array_column($records, 'last_name', 'first_name')); echo "Done\n"; ?> --EXPECTF-- *** Testing array_column() : object property fetching (numeric property names) *** -- first_name column from recordset -- array(3) { [0]=> string(4) "John" [1]=> string(5) "Sally" [2]=> string(4) "Jane" } -- id column from recordset -- array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } -- last_name column from recordset, keyed by value from id column -- array(3) { [1]=> string(3) "Doe" [2]=> string(5) "Smith" [3]=> string(5) "Jones" } -- last_name column from recordset, keyed by value from first_name column -- array(3) { ["John"]=> string(3) "Doe" ["Sally"]=> string(5) "Smith" ["Jane"]=> string(5) "Jones" } *** Testing array_column() : object property fetching (string property names) *** -- first_name column from recordset -- array(4) { [0]=> string(4) "John" [1]=> string(5) "Sally" [2]=> string(4) "Jane" [3]=> object(User)#8 (3) { ["id"]=> int(4) ["first_name"]=> string(4) "Jack" ["last_name"]=> string(7) "Sparrow" } } -- id column from recordset -- array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } -- last_name column from recordset, keyed by value from id column -- array(3) { [1]=> string(3) "Doe" [2]=> string(5) "Smith" [3]=> string(5) "Jones" } -- last_name column from recordset, keyed by value from first_name column -- array(3) { ["John"]=> string(3) "Doe" ["Sally"]=> string(5) "Smith" ["Jane"]=> string(5) "Jones" } Done