有时候需要伪造IP去抓取别的网站内容，最好是国内的IP，网上找了个函数，能随机10个IP段的国内IP，我自己查了些IP数据，手动加了5段IP，一共15个IP段，这样可以随机很多个国内IP了，附代码：
$ip_long = array(
array('607649792', '608174079'), //36.56.0.0-36.63.255.255
array('975044608', '977272831'), //58.30.0.0-58.63.255.255
array('999751680', '999784447'), //59.151.0.0-59.151.127.255
array('1019346944', '1019478015'), //60.194.0.0-60.195.255.255
array('1038614528', '1039007743'), //61.232.0.0-61.237.255.255
array('1783627776', '1784676351'), //106.80.0.0-106.95.255.255
array('1947009024', '1947074559'), //116.13.0.0-116.13.255.255
array('1987051520', '1988034559'), //118.112.0.0-118.126.255.255
array('2035023872', '2035154943'), //121.76.0.0-121.77.255.255
array('2078801920', '2079064063'), //123.232.0.0-123.235.255.255
array('-1950089216', '-1948778497'), //139.196.0.0-139.215.255.255
array('-1425539072', '-1425014785'), //171.8.0.0-171.15.255.255
array('-1236271104', '-1235419137'), //182.80.0.0-182.92.255.255
array('-770113536', '-768606209'), //210.25.0.0-210.47.255.255
array('-569376768', '-564133889'), //222.16.0.0-222.95.255.255
);
$rand_key = mt_rand(0, 14);
$huoduan_ip= long2ip(mt_rand($ip_long[$rand_key][0], $ip_long[$rand_key][1]));
return $huoduan_ip;
}
