google 在国内打不开了很多朋友会想办法设置一个hosts指定ｉｐ了，这样还是可以正常访问的，下面我们给各位介绍一个php抓取google hosts的程序代码，希望对各位有用．
无聊中居然又找到个php版本的抓取google hosts的文件,试了下还可以用,ping了下ip,延迟也不是很高,网页打开测试了下速度也很快,大家有兴趣的话可以试试.
php文件:
/**
 * 免翻墙上google
 * @author 自娱自乐自逍遥
 * date: 2015/2/6
 * time: 11:42
*/
define('start_tag','#google-hosts-2015');
define('end_tag','#google-hosts-2015-end');
if(!empty($argv[1])){
 $params = array();
 parse_str($argv[1], $params);
if(isset($params['url'])){
 define('google_host_url', $params['url']);
}
if(isset($params['del'])){
define('delete_google_host',true);
}
}
defined('google_host_url') || define('google_host_url', 'http://www.360kb.com/kb/2_150.html');
if(php_os == 'winnt'){
 define('hosts_file_path', 'c:windowssystem32driversetchosts');
}else if(in_array(php_os, array('linux','darwin','freebsd','openbsd','win32','windows','unix'))){
 define('hosts_file_path', '/etc/hosts');
}else{
 die('unsupported system!'.php_eol);
}
if(!is_writable(hosts_file_path)){
 die('without permission, please use the root user to perform!'.php_eol);
}
$hosts = file_get_contents(hosts_file_path);
$startpos = strpos($hosts, start_tag);
if(!defined('delete_google_host')){
 $gs = get_google_hosts();
 echo google_host_url.php_eol;
 echo $gs.php_eol;
}else{
 $gs = '';
 echo 'reset hosts'.php_eol;
}
if($startpos){
 $_tmp = substr($hosts, $startpos, strpos($hosts, end_tag) - $startpos + strlen(end_tag));
 $hosts = str_replace($_tmp,$gs,$hosts);
}else{
 $hosts.= php_eol.$gs;
}
$old_file_size = filesize(hosts_file_path);
if(file_put_contents(hosts_file_path, $hosts)){
 die('success. '.php_eol);
}else{
die('fail'.php_eol);
}
function get_google_hosts(){
 $html = file_get_contents(google_host_url);
 $html = strip_tags($html);
 $startpos = strpos($html, start_tag);
 $html = substr($html, $startpos, strpos($html,end_tag) - $startpos);
 $html = str_replace(' ',' ',$html);
 return $html.php_eol.end_tag;
}