这条线可能有什么问题:
'$query = "SELECT * FROM messages WHERE (rlat => '".$latmin."' AND rlat <= '".$latmax."') AND (rlon >= '".$lonmin."' AND rlon <= '".$lonmax."')";'
错误:查询错误:SELECT * FROM messages WHERE (r_lat => '55.4655951769' AND r_lat <= '55.496987423') AND (r_lon >= '25.5338700398' AND r_lon <= '25.5989507602')。您的 SQL 语法有错误;检查与您的 MySQL 服务器版本相对应的手册,以在第 1 行的 '=> '55.4655951769' AND r_lat <= '55.496987423') AND (r_lon >= '25.5338700398' AN' 附近使用正确的语法...
谢谢!