php 如果找到，如何删除重复的关联数组

Question

我有这几行。

$rows = [
    ['user' => 1, 'access' => '342'],
    ['user' => 2, 'access' => '765'],
    ['user' => 3, 'access' => '134'],
    ['user' => 1, 'access' => '342']
];

我设法删除了重复项，例如：用户 = 1，

$ids = [];
foreach ($rows as $k => $item) {
    if (in_array($item['user'], $ids)){
         unset($rows[$k]);            
    } else {
         $ids[] = $item['user'];
    }    
}

echo json_encode($rows);

问题是，我希望最终结果完全删除两个重复项。例如：所需的输出（不再有用户 1）

[
 {"user":2,"access":"765"},
 {"user":3,"access":"134"}
]

谢谢

Answer 1

$rows = [
        ['user' => 1, 'access' => '342'],
        ['user' => 2, 'access' => '765'],
        ['user' => 3, 'access' => '134'],
        ['user' => 1, 'access' => '342']
    ];
    $res = [];
    foreach ($rows as $row) {
        if(!empty($res[$row['user']])) {
            unset($res[$row['user']]);
        } else {
            $res[$row['user']] = $row;
        }
    }
    print_r(array_values($res));

php 如果找到，如何删除重复的关联数组

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