语句很简单
代码如下 | 复制代码 |
$connection=mysql_connect("localhost","root","password"); //连接并选择数据库服务器 |
运行结果提示
Error: Illegal mix of collations (gbk_chinese_ci,IMPLICIT) and (latin1_swedish_ci,COERCIBLE) for operation '='
意思是说:操作符“=”比较的字符集不一致,一个是gbk_chinese_ci,一个是latin1_swedish_ci。
首先、查看mysql的my.cnf,确认为utf8
代码如下 | 复制代码 |
+--------------------------+-------------------------------------+ | Variable_name | Value | +--------------------------+-------------------------------------+ | character_set_client | utf8 | | character_set_connection | utf8 | | character_set_database | latin1 | | character_set_filesystem | binary | | character_set_results | utf8 | | character_set_server | utf8 | | character_set_system | utf8 | | character_sets_dir | D:/MySQL Server 5.0/share/charsets/ | +--------------------------+-------------------------------------+ 8 rows in set (0.00 sec)
mysql> show variables like "%coll%"; +----------------------+-------------------+ | Variable_name | Value | +----------------------+-------------------+ | collation_connection | utf8_general_ci | | collation_database | latin1_swedish_ci | | collation_server | utf8_general_ci | +----------------------+-------------------+ 3 rows in set (0.00 sec) |
然后将数据库中所有编码方式改为统一:
代码如下 | 复制代码 |
Query OK, 0 rows affected (0.00 sec)
mysql> set collation_database= utf8_general_ci |
重新查看字符集及数据表字段编码字符是否一致:
总结
utf8_bin
utf8_general_ci
utf8_unicode_ci
utf8_bin 与 utf8_general_ci 可以
utf8_bin 与 utf8_unicode_ci 可以
utf8_general_ci 与 utf8_unicode_ci 不可以