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PHP: What's the best way to check equality of $_SERVER['HTTP_REFERER']?


PHP: What's the best way to check equality of $_SERVER['HTTP_REFERER']?

By : tejpratap27
Date : November 22 2020, 07:01 PM
fixed the issue. Will look into that further parse_url() combined with a bit of string juggling should do what you want. Try this:
code :


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$_SERVER['HTTP_REFERER'] vs Request.ServerVariables("HTTP_REFERER")

$_SERVER['HTTP_REFERER'] vs Request.ServerVariables("HTTP_REFERER")


By : Parveen Goyal
Date : March 29 2020, 07:55 AM
Any of those help According to RFC 2616, characters not in ISO- 8859-1 should be specially encoded. Therefore it seems that whoever is sending you the headers is breaking the spec. See field-content and TEXT.
4.2 Message Headers
code :
message-header = field-name ":" [ field-value ]
field-name     = token
field-value    = *( field-content | LWS )
field-content  = <the OCTETs making up the field-value
                 and consisting of either *TEXT or combinations
                 of token, separators, and quoted-string>
TEXT           = <any OCTET except CTLs,
                 but including LWS>
Sanitize $_SERVER['HTTP_USER_AGENT'] & $_SERVER['HTTP_REFERER'] before saving to DB?

Sanitize $_SERVER['HTTP_USER_AGENT'] & $_SERVER['HTTP_REFERER'] before saving to DB?


By : akaba
Date : March 29 2020, 07:55 AM
I wish this help you simple answer: validate/sanitize/escape everything (like client-side data, for example) because everything could be modified and evil or contain unexpected characters that could break your query (like Col. Shrapnel explanained).
to minimize risk you should also about using prepared statements instead of building sql-strings on your own (note: this doesn't mean you can leave out the checks).
implementing Js widget: Relying on $_SERVER['HTTP_REFERER'] variable to check on the host domain is safe?

implementing Js widget: Relying on $_SERVER['HTTP_REFERER'] variable to check on the host domain is safe?


By : shikha sharma
Date : March 29 2020, 07:55 AM
should help you out no, its not safe, the referer can be tampered at will.
see referer-control
How to check where a user opened a url in PHP without $_SERVER['HTTP_REFERER']

How to check where a user opened a url in PHP without $_SERVER['HTTP_REFERER']


By : Megafauna
Date : March 29 2020, 07:55 AM
I wish this helpful for you I'm trying to check whether the user has moved from a specific site. But this site doesn't send $_SERVER['HTTP_REFERER'], so I can't use it. , I answer IT.
I will use API on referring site.
What is the difference between $_SERVER['HTTP_REFERER'] and $HTTP_REFERER?

What is the difference between $_SERVER['HTTP_REFERER'] and $HTTP_REFERER?


By : Jess Crossno
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , ereg() and $HTTP_REFERER are both deprecated and shouldn't be used anymore. Instead you may use:
code :
preg_match("%$self_name%", $_SERVER['HTTP_REFERER'])
if(isset($_SERVER['HTTP_REFERER']))
preg_match("%$self_name%", $HTTP_REFERER)
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