Created
August 29, 2012 11:04
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Do Not Track (DNT) detect with PHP code
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| function get_smc_dnt() { | |
| /* | |
| * Do Not Track for privacy. | |
| * When this feature is enabled, webpage should exclude all tracking tools, | |
| * like Google Analytic and advertising networks | |
| */ | |
| // returns TRUE if DNT is on and is equal to 1, | |
| // returns FALSE if DNT is unset OR not equal to 1 | |
| return (isset($_SERVER['HTTP_DNT']) && $_SERVER['HTTP_DNT'] == 1); | |
| } |
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Or,
$_SERVER['HTTP_DNT'] === "1"to avoid type coercion.