Update or Rewrite a WordPress Plugin

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Bids
2
Avg Bid (USD)
$150
Project Budget (USD)
$30 - $250

Project Description:
Hello,

I'm currently using WordPress and ClickBank to sell my products.
Basically, affiliates will send traffic to a URL like
http://www.mydomain.com?hop=affiliateid&tid=trackingid

I'd like to create a plugin to capture variables contained in the URL for any page/post, save the data (cookie & php session & maybe another mechanism you can suggest). (The goal is to track the visitor accross several visits of our website. From what I understand, cookie are saved on the client and php sessions are saved on the server. So php sessions should be used as a fallback when cookies are disabled.) Then I should be able to retrieve those saved variables later.

Let's go into deeper details

---
Part A of the plugin will read and save tracking variables for at least 60 days.
If there is nothing wrong against making it a one year cookie/session, let's do this instead.
Default variables names to capture are 'hop', 'tid', 'vtid' but I'd like to be able to add more easily through the plugin settings.


---
Part B of the plugin will allow me to reinject those variables manually with a shortcode in my page/post content to craft new URLs.

For instance, a visitor comes to my site with the following link :
http://www.mydomain.com/page3/?hop=myAffiliate&tid=myTracking

I should be able to write in my page content :
<a href="http://[shortcodeName hop].vendor.hop.clickbank.net&tid=[shortcodeName tid]">Click Here !</a>

Final output should be :
<a href="http://myAffiliate.vendor.hop.clickbank.net&tid=myTracking">Click Here </a>

Shortcode should be able to handle both default variables (hop,tid,vtid) and the one added through the plugin settings.

---
Part C of the plugin will automatically analyze content of the page/post with add_filter('the_content','our_function').

Everytime a href URL points to my domain name (mydomain.com), our_function should append at the end of this URL every variables saved.

For instance, if a visitor comes to my site with the following link :
http://www.mydomain.com/page4/?hop=myAffiliate&tid=myTracking

And my page content is
<a href="http://www.google.com">Click Here !</a>
<a href="http://www.mydomain.com/gotopage5/">Or Here !</a>

Final output should be :
<a href="http://www.google.com">Click Here !</a>
<a href="http://www.mydomain.com/gotopage5/?hop=myAffiliate&tid=myTracking">Or Here !</a>

Keep in mind that href URLs may already have variables appended so you need to check if the ? is needed or not when crafting the new URL.

I've attached a plugin draft you can update or just read as a reference.

Regarding my needs, this current plugin lacks :
- Default variable names to capture : 'hop', 'tid', 'vtid' (not set in install()function)
- No shortcodes implemented
- Should store and restore data through php session too (fallback if cookie disabled)
- Regarding Part C, output is wrong when URL contains folders (http://www.mydomain.com/?hop=myAffiliate&tid=myTracking/gotopage5/ instead of http://www.mydomain.com/gotopage5/?hop=myAffiliate&tid=myTracking)

Let me know how much it would cost for a first quick&dirty version
including code ownership.

Let me know if you have questions, I'd be glad to explain with more
details so that we understand each other.

Regards,
Allan

Skills required:
PHP, Software Architecture, Wordpress
Additional Files: keeper.zip
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