http_referer question
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jaymoore_299
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http_referer question
How dependable is this variable? If I get 1,000 visits, then what percentage of the browsers would not send me this information? Anyone know which particular browsers do not send this information, or other reasons why it wouldn't be sent?
Re: http_referer question
http://en.wikipedia.org/wiki/Referer says..jaymoore_299 wrote:How dependable is this variable?
In other words, its almost completely not dependable.As referer information can violate privacy, some browsers have the option of disabling this functionality. Some proxy and firewall software will also block referers, to avoid leaking the location of non-public websites.
In practice, I've seen it around the 30% mark - 30% won't send it. Of course, your mileage may vary.jaymoore_299 wrote:If I get 1,000 visits, then what percentage of the browsers would not send me this information?
There are a shopping list of reasons why it wouldnt be sent:jaymoore_299 wrote:Anyone know which particular browsers do not send this information, or other reasons why it wouldn't be sent?
- The user can disable it in Firefox, Opera, and even in some IE-based browsers
- The proxies or firewalls that the user goes through may strip it, forge it, replace it
- The user may forge it
In short, its really unreliable.
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jaymoore_299
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