How can i create better urls using .htacces modrewrite - php

This are my urls right nowm for my products
http://www.example.com/product.php?product=32723
I want to achieve this
http://www.example.com/product/32723-brand-model-productname
I have been modifying my .htaccess but really with no clue on how to achieve this.

You must match your URL with a RewriteRule pattern and rewrite it to the target URL
RewriteRule ^/product/(\d+)- /product.php?product=$1
This pattern matches any URL starting with /product/ and captures the following digits (\d+) followed by a dash -. The substitution URL will be /product.php?product= with the captured digits $1 appended.
To capture some part of the match, you enclose it in parenthesis (...). Read more on regular expressions used in mod_rewrite at Apache mod_rewrite Introduction - Regular Expressions.

This question is so common I just put up the whole answer with code here:
http://www.prescia.net/bb/coding/5-141018-simple_friendly-url

Related

htaccess Rewrite rule to accept Hindi characters

I have a link like this
www.example.com/profile.php?name=sagar123
I used this rule:
RewriteRule ^profile/([a-zA-Z0-9_-]+)$ profile.php?name=$1 [L]
and now I can chang my URL to like this:
www.example.com/profile/sagar123
everything is fine but, now I want to use Hindi language characters also like this
www.example.com/profile.php?name=सागर (It's working fine)
www.example.com/profile/सागर (It is not working and showing Server error)
Please help me to write a rule or regex to accept all ([a-zA-Z0-9_-]+) and also Hindi Character.
Thanks and regards,
Hindi chars falls between \u0900-\u097F range. So you can use this inside character class.
To answer your question, most regexes(PCRE) do not support \u notation and support format of \x{900}
([\x{900}-\x{97F}a-zA-Z0-9_-]+)$
In python \u is supported, so :
([\u0900-\u097Fa-zA-Z0-9_-]+)$
see this for regex matching demonstrating both English and Hindi chars getting matched.
Also, see this for reading literal hindi char mapped to their hex values.
Use the (.*) regex class to match any type of character.
Also, you don't need the + operator at the end in your capturing ( and ) parens, as you're using ^ to indicate the beginning of the URL line, and $ to indicate its end, so a + greedy operator doesn't get you anything extra.
It should look like...
RewriteRule ^profile/(.*)$ profile.php?name=$1 [L]
If you need further info, I recommend taking a look at Apache.org: Apache mod_rewrite Introduction. They cover most of the characters I've discussed in this post up to this point: ., (, ), +, etc..

Delimiters and multiple parameters

I'm trying to use the mod_rewrite module to create smooth URLs. So for example my example.com/pages/group/index.php?id=1&slug=example-keyword would become example.com/group/1-example-keyword.
The problem I'm having is with the second parameter and how it is split. As the second parameter uses dashes how could I fix this as at the moment it throws 404 errors.
.htaccess rule
RewriteRule ^group/([^-]*)-([^-]*)$ /pages/group/index.php?id=$1&slug=$2 [L]
Your regular expression explicitly prohibits dashes in the first and second groups.
Try this using . (any character) instead of [^-] (any character except -) in your second group:
RewriteRule ^group/([^-]*)-(.*)$ /pages/group/index.php?id=$1&slug=$2 [L]
In this expression, everything after group/ but before the first - will be captured in group 1, and everything after the first - will be captured in group 2.

HTACCESS | Adding a second rewrite rule?

I'm trying to write my .htaccess to support two vanity url's, the code will speak for itself as I'm not very good with .htaccess.
RewriteRule ^([a-zA-Z0-9-]+)/?$ index.php?p=$1&s=$2 [L,QSA]
Upon going to for example http://website.com/home/test
I get a 404, but $_GET["p"] still returns back home if I go to just website.com/home.
Why am I getting a 404 when adding in my second variable in the url?
You get a 404 because /home/test does not match the expression ^[a-zA-Z0-9]+/?$. The second group after the first / exists beyond your $ string terminator. You need to add a second () group, which is optional. I have replaced the a-zA-Z0-9 character classes with [^/]+ which matches everything up to the next slash.
The (?:) indicates a non-capturing group encompasing the first /, with a capturing group () inside it to retrieve the $2 component. The entire construct is made optional with ? before the final $ terminator.
RewriteEngine On
RewriteRule ^([^/]+)(?:/([^/]+)/?)?$ index.php?p=$1&s=$2 [L,QSA]

PHP url routing regex

I am using a regular expression to route my application, this is the regex I am using:
#/users/([a-zA-Z0-9\-\_]+)/posts#
But unfortunately it matches against these these urls too:
/users/:uid/posts/:pid
/users/:uid/posts/:pid/comment/:cid
But it shouldn't, it should match exact the same url so only:
/users/:uid/posts
What should I change in the regex to make it match the exact same string?
Thanks for help
You should include anchors for the beginning (^) and end ($) of the string:
#^/users/([a-zA-Z0-9\-\_]+)/posts/?$#
I also allowed for an optional / at the end of the URL.

How can I make this URL validation regular expression less greedy?

So I have the following regular expression:
https?://(www\.)?flickr\.com/photos/(.+)/?
To match against the following URL:
http://www.flickr.com/photos/username/
How can I stop the final forward slash (/) from being included in the username sub-pattern (.+)?
I have tried:
https?://(www\.)?flickr\.com/photos/(.+?)/?
But then it only matches the first letter of the username.
https?://(?:www\.)?flickr\.com/photos/([^/]+)/?
I added ?: to the first group so it's not capturing, then used [^/] instead of the dot in the last match. This assures you that everything between "photos/" and the very next "/" is captured.
If you need to capture the first www just use this:
https?://(www\.)?flickr\.com/photos/([^/]+)/?
You need to make sure it doesn't match the forward slash:
https?://(?:www\.)?flickr\.com/photos/([^/]+)/?
You could also make the regex lazy (which is what I guess you were doing with the (.+?) syntax), but the above will work just fine
Change (.+) to ([^/]+). This will match until it encounters a /, so you might want to throw some other stuff in the class too.
There are generally two ways to do this:
Append a question mark, to make the matching non-greedy. .* will match as much as possible, .*? will match as little as possible.
Exclude the character you want to match next. If you want to stop on /, use [^/]*.
If you know there will be a trailing slash, take out the final ?.

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