正则表达式：匹配网址的最后一部分吗？

Question

I have a lot lines like this:

<b>http://www.mywebsite.com/video/xvxkxf_article1_something</b>
<b>http://www.mywebsite.com/video/xvxkxi_article2_something</b>

How to match "article1_something" and "article2_something" ? Thank you !

Answer 1

.*?_(.*)</b>$

Try this.Grab the capture.See demo.

http://regex101.com/r/yP3iB0/4

or

^.*?_|</b>

Try this.Replace with empty string .See demo.

http://regex101.com/r/yP3iB0/5

Answer 2

This (entire) regex matches your target

(?<=_)\w*

See live demo

The entire match is your target - no need to sully yourself with groups.

Answer 3

Here's a regex free version:

<?php
$str = "<b>http://www.mywebsite.com/video/xvxkxf_article1_something</b>";
$str = substr($str, 0, strlen($str) - 4); // removing </b>
$ar = explode("/", $str); // break url into array with / as delimiter
$ending_path = end($ar); // xvxkxf_article1_something
$ending_path_ar = explode("_", $ending_path); // break xvxkxf_article1_something with _ as delimiter
array_shift($ending_path_ar); // remove xvxkxf

$res = implode("_", $ending_path_ar); // join together pieces with _ as glue.

echo $res; // article1_something
?>

Answer 4

这是您的正则表达式：

/article\d_something/