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1. HTTP_REFERER
ÀÌÀü °æ·ÎÀÇ °ªÀ» °¡Áö´Â º¯¼öÀÔ´Ï´Ù.
$_SERVER['HTTP_REFERER']
$HTTP_SERVER_VARS['HTTP_REFERER']
$HTTP_REFERER
ó·³ »ç¿ëÇÏ½Ã¸é µË´Ï´Ù.
2. parse_url() ÇÔ¼ö
ÇØ´ç URL À» ½ºÅ°¸¶,È£½ºÆ®,Æнº,Äõ¸® µîÀÇ ¿¬°ü¹è¿ ÇüÅ·Π¹ÝȯÇÕ´Ï´Ù.
3. gethostbyname() ÇÔ¼ö
ÇØ´ç È£½ºÆ®ÀÇ IP¸¦ °¡Á®¿É´Ï´Ù.
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$referer = parse_url($_SERVER['HTTP_REFERER']);
$ip = gethostbyname($referer[host]);
echo "$referer[host]"; // µµ¸ÞÀÎ Ãâ·Â
echo "$ip"; // ip Ãâ·Â
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