1, there must be a Member data, have the same client are online as well as latitude and longitude of the field (do not have to get to the latitude and longitude, default is empty), the positioning of the mobile client, update the latitude and longitude coordinates of the members as well as online client state 3 by the above SQL code can achieve data list, as long as the output JSON/XML to parse mobile client can

LBS位置服务的SQL实现原理以及SQL代码（包括周边搜索以及位置交友）.txt

• We are an exchange download platform that only provides communication channels. The downloaded content comes from the internet. Except for download issues, please Google on your own.
• The downloaded content is provided for members to upload. If it unintentionally infringes on your copyright, please contact us.
• Please use Winrar for decompression tools
• If download fail, Try it againg or Feedback to us.
• If downloaded content did not match the introduction, Feedback to us，Confirm and will be refund.
• Before downloading, you can inquire through the uploaded person information

Nothing．