Home  >  Article  >  Backend Development  >  PHP gets IP information

PHP gets IP information

WBOY
WBOYOriginal
2016-08-08 09:28:00992browse

<?<span>php
</span><span>/*</span><span>*
 * 获取客户端IP
 * @param  integer $type 返回类型 0:string,1:long
 * @return string|long
 </span><span>*/</span>
<span>function</span> getClientIp(<span>$type</span> = 0<span>) {
    </span><span>$ip</span> = <span>NULL</span><span>;
    </span><span>if</span> (<span>isset</span>(<span>$_SERVER</span>['HTTP_X_FORWARDED_FOR'<span>])) {
        </span><span>$arr</span> = <span>explode</span>(',', <span>$_SERVER</span>['HTTP_X_FORWARDED_FOR'<span>]);
        </span><span>$pos</span> = <span>array_search</span>('unknown',<span>$arr</span><span>);
        </span><span>if</span>(<span>false</span> !== <span>$pos</span>) <span>unset</span>(<span>$arr</span>[<span>$pos</span><span>]);
        </span><span>$ip</span>  = <span>trim</span>(<span>$arr</span>[0<span>]);
    }</span><span>elseif</span> (<span>isset</span>(<span>$_SERVER</span>['HTTP_CLIENT_IP'<span>])) {
        </span><span>$ip</span> = <span>$_SERVER</span>['HTTP_CLIENT_IP'<span>];
    }</span><span>elseif</span> (<span>isset</span>(<span>$_SERVER</span>['REMOTE_ADDR'<span>])) {
        </span><span>$ip</span> = <span>$_SERVER</span>['REMOTE_ADDR'<span>];
    }
    </span><span>$long</span> = <span>sprintf</span>("%u", <span>ip2long</span>(<span>$ip</span><span>));
    </span><span>$ip</span>   = <span>$long</span> ? <span>array</span>(<span>$ip</span>, <span>$long</span>) : <span>array</span>('0.0.0.0', 0<span>);
    </span><span>return</span> <span>$ip</span>[<span>$type</span><span>];
}
</span><span>/*</span><span>*
 * 获取IP信息
 * @param  string|long $ip  IP地址
 * @return array
 </span><span>*/</span>
<span>function</span> getIpInfo(<span>$ip</span><span>)
{
    </span><span>if</span> (<span>is_long</span>(<span>$ip</span><span>)) {
        </span><span>$ip</span> = <span>long2ip</span>(<span>$ip</span><span>);
    }
    </span><span>$api</span> = 'http://ip.taobao.com/service/getIpInfo.php'<span>;
    </span><span>$ret</span> = <span>file_get_contents</span>(<span>$api</span> . '?ip=' . <span>$ip</span><span>);
    </span><span>$ret</span> = json_decode(<span>$ret</span>, <span>true</span><span>);
    </span><span>if</span> (<span>$ret</span>['code'] == 0<span>) {
        </span><span>return</span> <span>$ret</span>['data'<span>];
    } 
    </span><span>return</span> <span>array</span><span>();
}</span>

The above introduces PHP to obtain IP information, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn