php 二维数组去掉重复值

unique_array_more.php

<? php

/**
     * 对二维数组去重
     * @param $array2D
     * @return array
     */
    function unique_array_more($array2D)
    {
        foreach ($array2D[0] as $key => $value) {
            $keys[] = $key;
        }
        foreach ($array2D as $key => $value) {
            $str = join(",", $value);  //降维,也可以用implode,将一维数组转换为用逗号连接的字符串
            $array1D[] = $str;
        }
        $array1D = array_unique($array1D);    //去掉重复的字符串,也就是重复的一维数组
        foreach ($array1D as $key => $value) {
            $new = explode(",", $value);   //再将拆开的数组重新组装
            $uniqueArray2D[$key]=array_combine($keys,$new);
        }
        return $uniqueArray2D;
    }

update