The example in this article describes how PHP determines the access IP. Share it with everyone for your reference. The details are as follows:
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<?php
function getIP() {
if (! empty ( $_SERVER ["HTTP_CLIENT_IP"] )) {
$cip = $_SERVER ["HTTP_CLIENT_IP"];
} else if (! empty ( $_SERVER ["HTTP_X_FORWARDED_FOR"] )) {
$cip = $_SERVER ["HTTP_X_FORWARDED_FOR"];
} else if (! empty ( $_SERVER ["REMOTE_ADDR"] )) {
$cip = $_SERVER ["REMOTE_ADDR"];
} else {
$cip = ''; }
preg_match ( "/[d.]{7,15}/", $cip, $cips );
$cip = isset ( $cips [0] ) ? $cips [0] : 'unknown';
unset ( $cips );
return $cip;
}
?>
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I hope this article will be helpful to everyone’s PHP programming design.
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http://www.bkjia.com/PHPjc/1018922.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1018922.htmlTechArticleHow PHP determines access IP This article mainly introduces the method PHP determines access IP, involving PHP for the server side Friends who need relevant judgment and usage skills of the predefined variable $_SERVER can...