htaccess rewrite rule with regular expression

Question

I have a hard time to create rewrite rule for a redirect using part of an old URL. Example:

Old URL: http://www.example.com/news/index.php/2014/11/07/my-blog-post-from-old-site or http://www.example.com/news/index.php/2014/11/07/my_blog_post_from_old_site

New URL: http://www.example.com/2014/11/07/my-blog-post

New URL should to have only dates and first three elements of a permalink after stripping from dashes. Even I'm not sure if can be done using .htaccess rule but for sure can be done using PHP.

Here are my .httaccess rules

RewriteCond %{HTTP_HOST} ^example.com [NC,OR]
RewriteCond %{HTTP_HOST} ^www.example.com [NC]
RewriteRule ^(/?news/index.php/.*/[^/]*?)_([^/]*?_[^/]*)$ $1-$2 [N]
RewriteRule ^(/?news/index.php/.*/[^/]*?)_([^/_]*)$ $1-$2 [R=301]
RewriteRule ^news/index.php/([^/]+)-([^/]+)-(.*)$ http://www.example.com/$1-$2-$3 [L,R=301,NC]

What part of the URI is the same on the new link that is the same on the old link? — Panama Jack, Sep 29 '15 at 19:40

score 2 · Accepted Answer · answered Sep 29 '15 at 19:40

2

Just match for the blocks until hyphen (-) is encountered:

RewriteRule ^news/index\.php/([^-]+-[^-]+-[^-]+).* /$1 [R=301,L,NC]

answered Sep 29 '15 at 19:40

hjpotter92

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It should to have 3 blocks from dashes part - as return URI should to be something like `2014/11/07/my-blog-post` – JackTheKnife Sep 29 '15 at 19:42
2

@JackTheKnife It does. Try it first – hjpotter92 Sep 29 '15 at 19:43
1

Wow. I didn't expected that :) Learning something new on each step. – JackTheKnife Sep 29 '15 at 19:46
What I need to add to get `/2014/11/07/my_blog_post_from_old_site` rewrite with `2014/11/07/my-blog-post`? Looks like some URLs have underscore instead of dashes. – JackTheKnife Sep 29 '15 at 20:58
Replace `[^-]` with `[^_-]` – hjpotter92 Sep 29 '15 at 21:00
But it will put `014/11/07/my_blog_post` at the end not `014/11/07/my-blog-post` as is searching for a block which contains `-` or `_` just after index.php – JackTheKnife Sep 29 '15 at 21:07
@JackTheKnife You could follow this thread then: http://stackoverflow.com/a/1279758/1190388 – hjpotter92 Sep 29 '15 at 21:11
I have added rewrite rule based on a suggestion but it puts a site into infinite redirect loop when there are underscores. Check the OP for my changes. – JackTheKnife Sep 30 '15 at 15:34
1

@JackTheKnife I'd suggest asking a new question referring to this question in that post. – hjpotter92 Sep 30 '15 at 15:44

htaccess rewrite rule with regular expression

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