问题描述
这个数组包含的项目列表,我希望把它变成一个字符串,但我不知道如何让最后一个项目有一个&安培; /之前它,而不是昏迷
This array holds a list of items, I want to turn it into a string but I don't know how to make the last item have a &/and before it instead of a coma.
1 => coke 2=> sprite 3=> fanta
应成为
coke, sprite and fanta
这是正规破灭功能:
$listString = implode(', ',$listArrau );
什么是简单的方法来做到这一点?
What's an easy way to do it?
推荐答案
一个长期的衬垫与任何数量的项目如下:
A long-liner that works with any number of items:
echo join(' and ', array_filter(array_merge(array(join(', ', array_slice($array, 0, -1))), array_slice($array, -1)), 'strlen'));
或者,如果你的真正的preFER的冗长:
Or, if you really prefer the verboseness:
$last = array_slice($array, -1);
$first = join(', ', array_slice($array, 0, -1));
$both = array_filter(array_merge(array($first), $last), 'strlen');
echo join(' and ', $both);
问题的关键是,这个切片,合并,过滤和连接手柄的所有的情况下,包括0,1和2项,正确无需额外的if..else
语句。而它正好是可折叠成一个班轮。
The point is that this slicing, merging, filtering and joining handles all cases, including 0, 1 and 2 items, correctly without extra if..else
statements. And it happens to be collapsible into a one-liner.
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