array_slice两个关联索引 - array_slice by two associative indexes

array_slice by two associative indexes

本文关键字：两个关联索引 slice array | 更新日期: 2023-09-27

在

PHP 中获取两个关联键之间的数组切片的最简单方法是什么？

例如，对于数组

$arr = array('2012-02-01'=> 'bla blah',
'2012-02-02'=> 'bla blah',
'2013-02-03'=> 'bla blah',
'2012-02-04'=> 'bla blah',
'2012-02-05'=> 'bla blah',
'2010-03-06'=> 'bla blah',
'2012-04-07'=> 'bla blah',
'2012-01-08'=> 'bla blah',
'2012-02-09'=> 'bla blah',
'2012-10-10'=> 'bla blah',
'2012-12-03'=> 'bla blah');

如何才能在键"2012-02-04"和键"2012-04-07"之间分一杯羹这将是：

array('2012-02-04'=> 'bla blah',
'2012-02-05'=> 'bla blah',
'2010-03-06'=> 'bla blah',
'2012-04-07'=> 'bla blah')

只要您确定两个键都在数组中：

$arr = array(
    '2012-02-01'=> 'bla blah',
    '2012-02-02'=> 'bla blah',
    '2013-02-03'=> 'bla blah',
    '2012-02-04'=> 'bla blah',
    '2012-02-05'=> 'bla blah',
    '2010-03-06'=> 'bla blah',
    '2012-04-07'=> 'bla blah',
    '2012-01-08'=> 'bla blah',
    '2012-02-09'=> 'bla blah',
    '2012-10-10'=> 'bla blah',
    '2012-12-03'=> 'bla blah'
);
$startKey = '2012-02-04';
$endKey = '2012-02-07';
$new = array_slice(
    $arr,
    array_search($startKey, array_keys($arr)),
    array_search($endKey, array_keys($arr)) - 
        array_search($startKey, array_keys($arr)) + 1
);
var_dump($new);

否则，在执行 array_slice（）之前，您需要对 array_search（）调用的返回进行一些验证