正则表达式帮助 - Wordpress (search-regex) [英] Help with Regex - Wordpress (search-regex)

问题描述

我第一次尝试使用 RE 就卡住了.我通过 Search-Regex Plugin 在 Wordpress 网站上使用 Regex 并且需要匹配在一个特定的埋在一堆 html 代码中.HTML 示例:

My first attempt using RE has me stuck. I'm using Regex on a Wordpress website via the Search-Regex Plugin and need to match on a specific " buried within a bunch of html code. HTML example:

provide brand-strengthening efforts for the 10-school conference.&#0160; </p>
<p>
   <a href="http://www.learfield.com/oldblog/.a/6a00d8345233fa69e201157155a6fc970c-pi">
   <img alt="MOvalleyConf500" 
        border="0" 
        class="at-xid-6a00d8345233fa69e201157155a6fc970c"
        src="http://www.learfield.com/oldblog/.a/6a00d8345233fa69e201157155a6fc970c-800wi" 
        style="border: 1px solid black; margin: 0px; width: 502px; height: 384px;"             
        title="MOvalleyConf500" />
   </a>
</p>
<p>The photo above

在上面的例子中，有三个目标

In the above example, there are three targets

6a00d8345233fa69e201157155a6fc970c-pi"
6a00d8345233fa69e201157155a6fc970c"
6a00d8345233fa69e201157155a6fc970c-800wi"

我使用的正则表达式是 /6a00d834.*?"/ 它定位它们，但是我只想匹配结尾的 " 而不是整个字符串.这些是缺少文件扩展名的图像，所以我需要用 .jpg 替换结尾我理解表达式的替换部分，这是我遇到问题的初始匹配.

The Regex I'm using is /6a00d834.*?"/ it locates them, however I only want to match on the ending " and not the entire string. These are images that are missing their file extension, so I need to replace the ending " with .jpg" I understand the replacement part of the expression, it's the initial matching I'm having trouble with.

我有一堆这样的 (221)，所有目标都以 6a00d834 开头，然后是一些以 "

I have a bunch of these (221), all the targets all begin with 6a00d834 then some random alphanumeric ending with a "

感谢任何见解.谢谢.

从 OP 的评论中添加的编辑:实际上它是在 Wordpress 站点上使用插件 (REGEX) 来查询和替换 SQL 中的数据.我可以使用任何 Perl 兼容的正则表达式.(编辑器注意 - 根据插件，这很可能实际上不是使用 Perl，而是 PHP 的 PCRE 实现.)

Edit added from OP's comment: Actually it's on a Wordpress site using a plugin (REGEX) to query and replace data within SQL. I can use any Perl compatible regex. (Note from editor - depending on the plugin, this is most likely not actually using Perl but PHP's implementation of PCRE.)

推荐答案

字符串替换可以与匹配一起完成.由于您使用的是 PHP，请使用 preg_replace

String replacement can be done along with the matching. Since you're using PHP, use preg_replace

$newstring = preg_replace("/(6a00d834.*?)(\")/", "\\1.jpg\\2", $oldstring)

这将匹配分为两组，然后在它们之间插入.jpg".

This breaks the match into two groups, and then inserts '.jpg' between them.

对于 wordpress 正则表达式插件，请使用/(6a00d834.*?)(")/作为匹配字符串，然后使用 \1.jpg\2 作为替换字符串.

For the wordpress regex plugin, use /(6a00d834.*?)(")/ for the match string, and then use \1.jpg\2 for the replacement string.

这篇关于正则表达式帮助 - Wordpress (search-regex)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！