preg_split如何在结果中包含拆分分隔符？

I have this simple pattern that splits a text into periods

我有这个简单的模式，将文本分成句点

$text = preg_split("/[\.:!\?]+/", $text);

but i want to include . : or ! at the end of array items

但我想包括。：要么！在数组项的末尾

IE now for "good:news.everyone!" i have:

IE现在用于“好：新闻！每个人！”我有：

array("good","news","everyone","");

but what i want is:

但我想要的是：

array("good:","news.","everyone!","");

2 个解决方案

#1

Here you go:

干得好：

preg_split('/([^.:!?]+[.:!?]+)/', 'good:news.everyone!', -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);

How it works: The pattern actually turns everything into a delimiter. Then, to include these delimiters in the array, you can use the PREG_SPLIT_DELIM_CAPTURE constant. This will return an array like:

工作原理：模式实际上将所有内容都变成了分隔符。然后，要在数组中包含这些分隔符，可以使用PREG_SPLIT_DELIM_CAPTURE常量。这将返回一个数组，如：

array (
    0 => '',
    1 => 'good:',
    2 => '',
    3 => 'news.',
    4 => '',
    5 => 'everyone!',
    6 => '',
);

To get rid of the empty values, use PREG_SPLIT_NO_EMPTY. To combine two or more of these constants, we use the bitwise | operator. The result:

要删除空值，请使用PREG_SPLIT_NO_EMPTY。要组合这些常量中的两个或更多个，我们使用按位|运营商。结果：

array (
    0 => 'good:',
    1 => 'news.',
    2 => 'everyone!'
);

#2

No use for PREG_SPLIT_DELIM_CAPTURE if you use a positive lookbehind in your pattern. The function will keep the delimiters.

如果在模式中使用正向lookbehind，则不能使用PREG_SPLIT_DELIM_CAPTURE。该函数将保留分隔符。

$text = preg_split('/(?<=[.:!?])/', 'good:news.everyone!', 0, PREG_SPLIT_NO_EMPTY);

If you use lookbehind, it will just look for the character without matching it. So, in the case of preg_split(), the function will not discard the character.

如果你使用lookbehind，它只会寻找不匹配它的角色。因此，在preg_split（）的情况下，该函数不会丢弃该字符。

The result without PREG_SPLIT_NO_EMPTY flag:

没有PREG_SPLIT_NO_EMPTY标志的结果：

array (
    0 => 'good:',
    1 => 'news.',
    2 => 'everyone!',
    3 => ''
);

The result with PREG_SPLIT_NO_EMPTY flag:

PREG_SPLIT_NO_EMPTY标志的结果：

array (
    0 => 'good:',
    1 => 'news.',
    2 => 'everyone!'
);

You can test it using this PHP Online Function Tester.

您可以使用此PHP在线函数测试程序对其进行测试。

#1