If you have an indexed array of objects, and you want to remove duplicates by comparing a specific property in each object, a function like the remove_duplicate_models() one below can be used.
| <?php | |
| class Car { | |
| private $model; | |
| public function __construct( $model ) { | |
| $this->model = $model; | |
| } | |
| public function get_model() { | |
| return $this->model; | |
| } | |
| } | |
| $cars = [ | |
| new Car('Mustang'), | |
| new Car('F-150'), | |
| new Car('Mustang'), | |
| new Car('Taurus'), | |
| ]; | |
| function remove_duplicate_models( $cars ) { | |
| $models = array_map( function( $car ) { | |
| return $car->get_model(); | |
| }, $cars ); | |
| $unique_models = array_unique( $models ); | |
| return array_values( array_intersect_key( $cars, $unique_models ) ); | |
| } | |
| print_r( remove_duplicate_models( $cars ) ); |
The result is:
| <?php | |
| Array | |
| ( | |
| [0] => Car Object | |
| ( | |
| [model:Car:private] => Mustang | |
| ) | |
| [1] => Car Object | |
| ( | |
| [model:Car:private] => F-150 | |
| ) | |
| [2] => Car Object | |
| ( | |
| [model:Car:private] => Taurus | |
| ) | |
| ) |
Written by Kellen Mace, who lives in Rochester Hills, MI and builds cool stuff on the web. About Kellen // Follow him on Twitter →