正则表达式用于句子中的特定单词集

Question

我想帮助创建一个可以在句子中找到一组特定单词的正则表达式。在我们搜索句子之前，已知具体的单词或单词集。这些词总是存在于句子中。随着时间的推移，这套装置将会不断扩大。以下示例，

一组单词：“的房子”，“时间”，“这是如何”，“来< / strong>“，”主页“

应该返回匹配的句子：

1）“我出来了的房子” - ＆gt;匹配“的房子”

2）“我记得我曾经是个孩子的时间” - ＆gt;匹配“时间”

3）“好吧，我不确定你做了什么，但是这就是我解决问题的方式” - ＆gt;匹配“这是如何”

4）“你什么时候来回家？” - ＆GT;匹配“主页”

更新：实施语言将在PHP中

Answer 1

描述

此表达式将与您的短语匹配，并确保它们不会嵌入另一个较大的单词中。

^.*?(?:\s|^)(of\sthe\shouse|time|this\sis\show|home)(?=\W|$).*

PHP代码示例：

你没有指定一种语言，所以我只是提供这个php示例来简单地说明它是如何工作的。

示例文字

1) "I was coming out of the house"
2) "I remember the time when I used to be a baby"
3) "Well, I am not sure what you did, but this is how I fix my problems"
4) "When are you coming home?"
5) "This is howard Timey said of the houseboat"
6) "The last word in this line is home

<强>代码

<?php
$sourcestring="your source string";
preg_match_all('/^.*?(?:\s|^)(of\sthe\shouse|time|this\sis\show|home)(?=\W|$).*/imx',$sourcestring,$matches);
echo "<pre>".print_r($matches,true);
?>

<强>匹配

[0] => Array
    (
        [0] => 1) "I was coming out of the house"
        [1] => 2) "I remember the time when I used to be a baby"
        [2] => 3) "Well, I am not sure what you did, but this is how I fix my problems"
        [3] => 4) "When are you coming home?"
        [4] => 6) "The last word in this line is home
    )

[1] => Array
    (
        [0] => of the house
        [1] => time
        [2] => this is how
        [3] => home
        [4] => home
    )