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<?php function doSetPixels($cookie, $ssid, $fetchPixels, $sson_ssid, $loggedIn) { $isCookieMissing = $loggedIn && $cookie===null && $ssid; $isExplicitRequest = !is_null($fetchPixels); $sapSessionDiffers = !$sson_ssid || $sson_ssid !== $ssid; $setPixels = ( $isExplicitRequest || $isCookieMissing ) && $sapSessionDiffers; return $setPixels; } function simpler($c,$s,$f) { return doSetPixels($c,$s,null,$f,false); } var_dump(simpler(12,13,15)); var_dump(simpler(12,12,12)); var_dump(simpler(12,12,15)); var_dump(simpler(12,13,12)); var_dump(simpler(12,15,15)); var_dump(simpler(null,null,null)); var_dump(simpler(12,null,null)); var_dump(simpler(null,13,null)); var_dump(simpler(null,13,15)); var_dump(simpler(12,13,null)); var_dump(simpler(null,13,15)); var_dump(simpler(12,null,13));

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