Php method for determining access IP address _ PHP Tutorial

Php method for determining the access IP address. This article mainly introduces how php judges access IP addresses. it involves php's judgment and usage skills on SERVER-side predefined variable $ _ SERVER, if you need a friend, you can use php to determine how to access the IP address.

This article mainly introduces php's method of determining the IP address to be accessed. it involves php's judgment and usage skills on the SERVER's predefined variable $ _ SERVER. For more information, see

This example describes how to use php to determine the IP address to access. Share it with you for your reference. The details are as follows:

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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; } ?>

I hope this article will help you with php programming.

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This article mainly introduces php's method of judging access IP addresses, involving php's judgment and usage skills on the SERVER's predefined variable $ _ SERVER. if you need a friend, you can...