Question

我有两个多维数组，我试图从第一个数组中的第二个数组中减去所有值。

第一个数组：名为$ arrayREQ2

Array ( 
    [0] => Array ( 
        [id] => 3 
        [subject] => asdasd 
        [from_id] => 3 
        [to_id] => 5 
        [time] => 2014-05-11 10:58:33 
    ) 

    [1] => Array ( 
        [id] => 2 
        [subject] => trolis 
        [from_id] => 4 
        [to_id] => 3 
        [time] => 2014-05-08 16:09:30 
    ) 
    [2] => Array ( 
        [id] => 1 
        [subject] => bandom 
        [from_id] => 3 
        [to_id] => 5 
        [time] => 2014-05-08 11:50:39 
    ) 
)

第二名：名为$arrayREQ1

Array ( 
    [0] => Array ( 
        [id] => 2 
        [subject] => trolis 
        [from_id] => 4 
        [to_id] => 3 
        [time] => 2014-05-08 16:09:30 
    ) 
)

我期待的结果：

Array ( 
    [0] => Array ( 
        [id] => 3 
        [subject] => asdasd 
        [from_id] => 3 
        [to_id] => 5 
        [time] => 2014-05-11 10:58:33 
    )  

    [1] => Array ( 
        [id] => 1 
        [subject] => bandom 
        [from_id] => 3 
        [to_id] => 5 
        [time] => 2014-05-08 11:50:39 
    ) 
)

我尝试使用array_diff，但它不起作用：

$diffff = array_diff($arrayREQ2, $arrayREQ1);

它返回空数组。

Answer 1

如果想要，你可以在这上面使用普通的'foreach'。他们检查是否匹配，如果是，则取消设置该特定密钥。考虑这个例子：

$arrayREQ1 = array(array('id' => 2, 'subject' => 'trollis', 'from_id' => 4, 'to_id' => 3, 'time' => '2014-05-08 16:09:30'));
$arrayREQ2 = array(
    array('id' => 3, 'subject' => 'asdasd', 'from_id' => 3, 'to_id' => 5, 'time' => '2014-05-11 10:58:33'),
    array('id' => 2, 'subject' => 'trollis', 'from_id' => 4, 'to_id' => 3, 'time' => '2014-05-08 16:09:30'),
    array('id' => 1, 'subject' => 'bandom', 'from_id' => 3, 'to_id' => 5, 'time' => '2014-05-08 11:50:39'),
);

foreach($arrayREQ2 as $key => $value) {
    if($arrayREQ1[0] === $value) {
        unset($arrayREQ2[$key]);
    }
}

print_r($arrayREQ2);

示例输出：

Array
(
    [0] => Array
    (
        [id] => 3
        [subject] => asdasd
        [from_id] => 3
        [to_id] => 5
        [time] => 2014-05-11 10:58:33
    )

    [2] => Array
    (
        [id] => 1
        [subject] => bandom
        [from_id] => 3
        [to_id] => 5
        [time] => 2014-05-08 11:50:39
    )

)

将两个数组与array_diff进行比较

1 个答案: