Question

我有一个多维数组，如下所示：

<% if @user.items.offset(0).last.issue_date + 2.years > Date.today %>

任何关于什么是最快和最有效的方法只返回非空PHONE值的数组的想法，即我希望得到的数组是：

$array =    [    

    0 => [  
        "id"    =>  1,  
        "name"  => "Sammy",
        "phone" => "2348055643322",
        "email" => "sammy@abc.com"
    ],  
    1 => [  
        "id"    => 2,  
        "name"  => "Saheed",  
        "phone" => "",
        "email" => "saay@aol.com"
    ], 
    2 => [  
        "id"    => 3,  
        "name"  => "Edwin",  
        "phone" => "2348099993322",
        "email" => "eddy@gmail.com"
    ],
    3 => [  
        "id"    => 3,  
        "name"  => "Jonadab",  
        "phone" => "2348066773322",
        "email" => "jonadab@gmail.com"
    ],
    4 => [  
        "id"    => 3,  
        "name"  => "Mercy",  
        "phone" => "",
        "email" => "mercy@sysnet.com"
    ]

   ];

Answer 1

您可以使用array_filter

$array =                     //Your array
$column = 'phone';           //column to filter

$result = array_filter($array, function($o) use($column) {
    return trim( $o[$column] ) !== '' && $o[$column] !== null;
});

print_r( $result );

这将导致：

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => Sammy
            [phone] => 2348055643322
            [email] => sammy@abc.com
        )

    [2] => Array
        (
            [id] => 3
            [name] => Edwin
            [phone] => 2348099993322
            [email] => eddy@gmail.com
        )

    [3] => Array
        (
            [id] => 3
            [name] => Jonadab
            [phone] => 2348066773322
            [email] => jonadab@gmail.com
        )

)

Doc：array_filter()

Answer 2

这对我有用：

$resulting_array = array_filter($array, function ($entry) {
                     return !empty($entry['phone']);
                  });

Answer 3

简单的方法，我认为最快的方式：

$response = [];

foreach ($array as $index => $row) {

    if (strlen($row['phone'])) {
        // keep the original index
        $response [$index]= $row;
    }
}

var_dump($response);

Answer 4

另一种选择是使用array_column，array_filter和array_intersect_key。

Array_column和array_filter过滤掉非空的电话列 Array_intersect_key将从$ phone获取密钥并匹配$ array。

$phone = array_filter(array_column($array, "phone"));

$filtered = array_intersect_key($array, $phone);

Var_dump($filtered);

https://3v4l.org/R3Tcq

由于问题是“最快的方法”，请参见此处：https://3v4l.org/nafbq

如何返回多维数组中特定列包含非空值的数组？

4 个答案: