如何使用一个变量在 PHP 中过滤这样的数组？ [复制]答案

【问题标题】：How to filter such array in PHP using one variable? [duplicate]如何使用一个变量在 PHP 中过滤这样的数组？ [复制]
【发布时间】：2013-02-06 10:35:54
【问题描述】：

我正在尝试过滤 PHP 中的数组。请看我的数组：

Array
(
    [0] => Array
        (
            [date_start_month_name] => January
            [approved] => Accepted: yes
        )

    [1] => Array
        (
            [date_start_month_name] => March
            [approved] => Accepted: yes
        )

    [2] => Array
        (
            [date_start_month_name] => March
            [approved] => Accepted: yes
        )

    [3] => Array
        (
            [date_start_month_name] => April
            [approved] => Accepted: yes
        )
)

我想使用月份名称过滤数组，例如：March 并得到如下内容：

Array
(
    [0] => Array
        (
            [date_start_month_name] => March
            [approved] => Accepted: yes
        )

    [1] => Array
        (
            [date_start_month_name] => March
            [approved] => Accepted: yes
        )
)

我该怎么做？提前感谢您的帮助。最好的！

【问题讨论】：

几分钟前是我还是你问了同样的问题？
那么你看过array_filter()吗？
重复的重复...

标签： php arrays variables filter

【解决方案1】：

$march = array_filter($my_arr, function($value) { 
   return $value['date_start_month_name'] == "March"; 
});

【讨论】：

【解决方案2】：

试试array_filter:

$array=array(array("month"=>"January","foo"=>"bar"),array("month"=>"January","foo"=>"bar"),array("month"=>"March","foo"=>"bar"),array("month"=>"March","foo"=>"bar"));
print_r($array);
$result=array_filter($array,function($o){return $o["month"]=="March";});
print_r($result);

输出：

Array
(
    [0] => Array
        (
            [month] => January
            [foo] => bar
        )

    [1] => Array
        (
            [month] => January
            [foo] => bar
        )

    [2] => Array
        (
            [month] => March
            [foo] => bar
        )

    [3] => Array
        (
            [month] => March
            [foo] => bar
        )

)
Array
(
    [2] => Array
        (
            [month] => March
            [foo] => bar
        )

    [3] => Array
        (
            [month] => March
            [foo] => bar
        )

)

【讨论】：