判断内网ip

function is_internal_id($ip_address){$get_ip_number = function($ip){$ip_segment = explode('.', $ip);if(!is_array($ip_segment) || count($ip_segment) != 4)return -1;$ip_num = $ip_segment[0] * 256 * 256 * 256 + $ip_segment[1] * 256 * 256 + $ip_segment[2] * 256 + $ip_segment[3];return $ip_num;};$process_ip = $get_ip_number($ip_address);/*** 私有IP：A类  10.0.0.0    -10.255.255.255*       B类  172.16.0.0  -172.31.255.255*       C类  192.168.0.0 -192.168.255.255*       D类   127.0.0.0   -127.255.255.255(环回地址)*/$a_begin = $get_ip_number("10.0.0.0");$a_end = $get_ip_number("10.255.255.255");if($process_ip >= $a_begin && $process_ip <= $a_end)return true;$b_begin = $get_ip_number("172.16.0.0");$b_end = $get_ip_number("172.31.255.255");if($process_ip >= $b_begin && $process_ip <= $b_end)return true;$c_begin = $get_ip_number("192.168.0.0");$c_end = $get_ip_number("192.168.255.255");if($process_ip >= $c_begin && $process_ip <= $c_end)return true;$d_begin = $get_ip_number("127.0.0.0");$d_end = $get_ip_number("127.255.255.255");if($process_ip >= $d_begin && $process_ip <= $d_end)return true;return false;}

PHP 自带判断私有ip 方法

function is_private_ip($ip) { return !filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE);
} 

判断Mobile,还是pc

function ismobile() {$is_mobile = '0';if(preg_match('/(android|up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone)/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {$is_mobile=1;}if((strpos(strtolower($_SERVER['HTTP_ACCEPT']),'application/vnd.wap.xhtml+xml')>0) or ((isset($_SERVER['HTTP_X_WAP_PROFILE']) or isset($_SERVER['HTTP_PROFILE'])))) {$is_mobile=1;}$mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'],0,4));$mobile_agents = array('w3c ','acs-','alav','alca','amoi','andr','audi','avan','benq','bird','blac','blaz','brew','cell','cldc','cmd-','dang','doco','eric','hipt','inno','ipaq','java','jigs','kddi','keji','leno','lg-c','lg-d','lg-g','lge-','maui','maxo','midp','mits','mmef','mobi','mot-','moto','mwbp','nec-','newt','noki','oper','palm','pana','pant','phil','play','port','prox','qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar','sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-','tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp','wapr','webc','winw','winw','xda','xda-');if(in_array($mobile_ua,$mobile_agents)) {$is_mobile=1;}if (isset($_SERVER['ALL_HTTP'])) {if (strpos(strtolower($_SERVER['ALL_HTTP']),'OperaMini')>0) {$is_mobile=1;}}if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'windows')>0) {$is_mobile=0;}return $is_mobile;
}var_dump(ismobile());