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Asked: 2026-05-25T02:20:10+00:00

I am presently working on building an user referral tracking script in PHP ,

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I am presently working on building an user referral tracking script in PHP , MySql . As per the plan , any user who completes the registration will be given a referral link as well as he can share info about my application on Facebook and Twitter .

Now , untill and unless this user brings at least 5 more users to my site , he won;t be allowed to view the home page .

Now , how can I track the number of referred persons that this user brings ?

1.If I use $_HTTP_REFERRER – In this case I can get the link from where the user has landed onto my page . If this is my referral link then I can update the database entry for this user , and the number of referred persons + 1. But , how reliable is $_HTTP_REFERRER ?

2.If I use to track through cookie : Here I am a bit confused as to whether I have to set the cookies for each and every browser or is there any browser independent cookie setting method ? During setting the cookie , how I should save it , I mean should I use only referral id or should I use a combination of referral id and site_id(or any other rcombination).

Also , I should save the referral info in a database . What should be the ideal table schema for this table . I have planned something like :
(user_id,user_name,no_of_referrals,referred_by).

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  1. Editorial Team

    To get the referer, you want to use $_SERVER['HTTP_REFERER']. Nearly all browsers will send a referer, but it isn’t mandatory that they do. Since this is a client-side thing, it can be easily modified by the user.

    Most sites I’ve seen that use things like this use a variable in the URL to track the originating site. Something like this:

    http://www.yoursite.com/someresource?originaccount=12345678

    Whether or not this works for you is highly dependent on what you intend to do with that information, as obviously someone could change the ID as well.

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