php preg_替换非字母数字字符并选择连词,然后拆分

我想在这个字符串中替换:

This is my Store, it has an amazing design; its creator says it was losing money and he doesn't want to maintain it

所有非字母数字字符,除了 ' (没有)和所有选择的连词:

is, it, its, the, this, if, so, and

到目前为止,我已经设法获得了这个结果:

Array
(
    [1] => This
    [2] => my
    [3] => Store
    [4] => has
    [5] => an
    [6] => amazing
    [7] => design
    [8] => s
    [9] => creator
    [10] => says
    [11] => was
    [12] => losing
    [13] => money
    [14] => and
    [15] => he
    [16] => doesn
    [17] => t
    [18] => want
    [19] => maintain
)

代码如下:

$string = "This is my Store, it has an amazing design; its creator says it was losing money and he doesn't want to maintain it";
$words = array_filter(preg_split('/\s+/', preg_replace('/\W|\b(it|the|its|is|to)|\b/i', ' ', $string)));

print_r($words);

https://3v4l.org/cLrM4

但正如你所看到的,它正在取代 it 何时更换 its 它也在取代 ’ 在里面 doesn't .

有人能帮我理解我哪里做错了什么吗?XYX

另外,我也需要它 不区分大小写 那个 /i 非常滑稽的工作:(

谢谢您!