在需要限制的页面中加入：

forbid_ip();  //限制ip功能

forbid_ip 函数：
function forbid_ip(){
    global $onlineip;
   
      $ForbidIp="192.168.1.10\r\n
                          192.168.2.11\r\n
                          144.552.221.1\r\n
                          116.21.22.236";
                         
      $detail = explode( "\r\n", $ForbidIp );
      foreach ( $detail as $key => $value )
      {
        $value = trim( $value );
          if ( !$value )
          {
            continue;
          }
          if ( ereg( "^{$value}", $onlineip ) )
          {
            exit( "限制的IP!" );
          }
      }
}