嵌套的where条件允许我们在查询中使用多个where子句,并通过逻辑运算符(如AND和OR)将它们组合起来。 以下是使用CodeIgniter的嵌套where条件的示例代码: 代码语言:txt 复制 $this->db->select('*'); $this->db->from('my_table'); $this->db->where('column1', 'value1'); $this->db->group_start();...
->or_group_start() ->like('username','zhang','all') ->like('username','zhang','all') ->group_end() ->join('user_cate','ci_user_cate.id=ci_user.cate_id','left') ->get_compiled_select(); var_dump($res);// "SELECT * FROM `ci_user` LEFT JOIN `ci_user_cate` ON `ci...
group_start() Returns: CI_DB_query_builder instance (method chaining) Return type: CI_DB_query_builder Starts a group expression, using ANDs for the conditions inside it. or_group_start() Returns: CI_DB_query_builder instance (method chaining) Return type: CI_DB_query_builder Starts a gro...
主要涉及三个文件,数据库配置文件(数据库能否连接成功的关键),Db.php实例化数据库类(里面有连接到数据库是否成功的逻辑判断),DB.driver.php里面这是连接数据库的相关操作;重连,关闭连接等等如果涉及到自动连接还可以加一个文件 application/config/autoload.php。具体见:源码或者相关网站http://codeigniter.org.cn/use...
orGroupStart() Returns: BaseBuilder instance (method chaining) Return type: BaseBuilder Starts a group expression, using OR for the conditions inside it. notGroupStart() Returns: BaseBuilder instance (method chaining) Return type: BaseBuilder Starts a group expression, using AND NOT...
$DB2 = $this->load->database('group_two', TRUE); 则数据库操作对象为: $DB1 和 $DB2 查询: 1. 无条件查询 $query = $this->db->get('数据表名'[,每页纪录数,偏移]); //遍历查询到的记录 foreach ($query->result() as $row) ...
在CodeIgniter的配置文件(通常是config/database.php)中,你需要设置好数据库的相关信息,包括主机名、用户名、密码、数据库名等。 在需要进行事务处理的方法中,你可以使用CodeIgniter提供的数据库类(通常是$this->db)来执行查询操作。在执行查询之前,你需要开启事务,可以使用$this->db->trans_start()方法来开始一个...
groupStart() refactorization #2270 (michalsn) testMode() method for BaseBuilder #2269 (michalsn) Validation session use only if exists #2268 (jim-parry) Tests setUp and tearDown: void #2267 (MGatner) RC.2 release prep #2266 (jim-parry) Fix a validation issue on multiple file upload #...
application/views/welcome_message.php The corresponding controller for this page is found at: application/controllers/Welcome.php If you are exploring CodeIgniter for the very first time, you should start by reading theUser Guide.
查看group信息/etc/group里面没有nobody组 修改nginx的配置文件conf,第一行就有user设置为www-data,重启nginx,浏览器重新访问 路径配置错误2023/05/30 15:59:29 [error] 24294#0: *226 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: xxx, server: ...