PHP获取正解的IP和验证IP

PHP获取正解的IP和验证IP已关闭评论
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所属分类：PHP

获取IP:

<span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">getIpAddress</span><span class="hljs-params">()</span> </span>{
    <span class="hljs-keyword">foreach</span> (<span class="hljs-keyword">array</span>(<span class="hljs-string">'HTTP_CLIENT_IP'</span>, <span class="hljs-string">'HTTP_X_FORWARDED_FOR'</span>, <span class="hljs-string">'HTTP_X_FORWARDED'</span>, <span class="hljs-string">'HTTP_X_CLUSTER_CLIENT_IP'</span>, <span class="hljs-string">'HTTP_FORWARDED_FOR'</span>, <span class="hljs-string">'HTTP_FORWARDED'</span>, <span class="hljs-string">'REMOTE_ADDR'</span>) <span class="hljs-keyword">as</span> $key) {
        <span class="hljs-keyword">if</span> (array_key_exists($key, $_SERVER) === <span class="hljs-keyword">true</span>) {
            <span class="hljs-keyword">foreach</span> (explode(<span class="hljs-string">','</span>, $_SERVER[$key]) <span class="hljs-keyword">as</span> $ip) {
                $ip = trim($ip); <span class="hljs-comment">// just to be safe</span>
                <span class="hljs-keyword">if</span> (checkIp($ip) {
                    <span class="hljs-keyword">return</span> $ip;
                }
            }
        }
    }
}

function getIpAddress() {

foreach (array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key) {

if (array_key_exists($key, $_SERVER) === true) {

foreach (explode(',', $_SERVER[$key]) as $ip) {

$ip = trim($ip); // just to be safe

if (checkIp($ip) {

return $ip;

}

验证IP:

<span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">checkIp</span><span class="hljs-params">($ip)</span> </span>{
    <span class="hljs-keyword">if</span> (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === <span class="hljs-keyword">false</span>) {
        <span class="hljs-keyword">return</span> <span class="hljs-keyword">false</span>;
    }

    <span class="hljs-keyword">return</span> <span class="hljs-keyword">true</span>;
}