deleting last array value ? php

Question

1 question type

$transport = array('foot', 'bike', 'car', 'plane');

can i delete the plane ? is there a way ?

2 question type

 $transport = array('', 'bike', 'car', ''); // delate the last line
 $transport = array('', 'bike', 'car', 'ferrari'); // dont the last line
 $transport = array('ship', 'bike', 'car', 'ferrari'); // dont the last line

is there a easy way to delete the last array " if last array value is empty then delete " if not empty then don't delete ? but not to delete the first array ?

Answer 1

if(empty($transport[count($transport)-1])) {
    unset($transport[count($transport)-1]);
}

Answer 2

最简单的方法:array_pop()将弹出数组末尾的元素.

至于第二个问题:

if (end($transport) == "") { 
    array_pop($transport); 
}

应该处理第二个.

编辑:

修改代码以符合更新的信息.这应该适用于基于关联或索引的数组.

修正了array_pop,给出了Scott的评论.谢谢你抓住了!

修复了致命错误,我想空的不能和我一样使用.如果需要,上面的代码将不再捕获null/false,您可以从end函数中分配变量并进行测试,如下所示:

$end_item = end($transport);
if (empty($end_item)) { 
    array_pop($transport); 
}

很抱歉发布错误代码.以上我测试过.

Answer 3

对于#1,

$transport=array_slice($transport,0,count($transport)-1)

Answer 4

您可以通过array_pop()功能简单地做到这一点：

array_pop($transport);