Php 如何按第一维度删除重复的多维数组

我有一个二维数组，如下所示：

  Array
(
    [0] => Array
    (
        [0] => talk
        [1] => amount
    )
    [1] => Array
    (
        [0] => base
        [1] => amazing
    )
    [2] => Array
    (
        [0] => talk
        [1] => filter
    )
    [3] => Array
    (
        [0] => label
        [1] => any
    )
    [4] => Array
    (
        [0] => talk
        [1] => amount
    )
    [5] => Array
    (
        [0] => tour
        [1] => any
    )
)

  Array
(
    [0] => Array
    (
        [0] => talk
        [1] => amount
    )
    [1] => Array
    (
        [0] => base
        [1] => amazing
    )
    [2] => Array
    (
        [0] => label
        [1] => any
    )
    [3] => Array
    (
        [0] => tour
        [1] => any
    )
)

如何按第一个维度删除重复值，结果如下：

  Array
(
    [0] => Array
    (
        [0] => talk
        [1] => amount
    )
    [1] => Array
    (
        [0] => base
        [1] => amazing
    )
    [2] => Array
    (
        [0] => talk
        [1] => filter
    )
    [3] => Array
    (
        [0] => label
        [1] => any
    )
    [4] => Array
    (
        [0] => talk
        [1] => amount
    )
    [5] => Array
    (
        [0] => tour
        [1] => any
    )
)

  Array
(
    [0] => Array
    (
        [0] => talk
        [1] => amount
    )
    [1] => Array
    (
        [0] => base
        [1] => amazing
    )
    [2] => Array
    (
        [0] => label
        [1] => any
    )
    [3] => Array
    (
        [0] => tour
        [1] => any
    )
)

关于删除数组中的重复值有很多帮助，但我没有看到任何关于按特定维度删除重复值的示例

感谢您提供的高级

<?php
function uniqueArray($array)
{
  $result = array_map("unserialize", array_unique(array_map("serialize", $array)));

  foreach ($result as $key => $value)
  {
    if ( is_array($value) )
    {
      $result[$key] = uniqueArray($value);
    }
  }

  return $result;
}
?>

这对你有帮助

---

注意：未测试

请阅读此内容，这不仅仅是检查子数组的第一个元素。