在php中消除二维数组中的重复值

<?php
$originalArray = array(
    array('id' => 1, 'name' => 'John'),
    array('id' => 2, 'name' => 'Jane'),
    array('id' => 3, 'name' => 'John'),
    array('id' => 4, 'name' => 'Jane')
);

$uniqueArray = array_map("unserialize", array_unique(array_map("serialize", $originalArray)));

print_r($uniqueArray);
?>

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => John
        )

    [1] => Array
        (
            [id] => 2
            [name] => Jane
        )

)