About database operations of thinkphp5

1.Database configuration

query executeOriginal ecologysqlStatement addition, deletion, modification and query

$result = Db::execute('insert into log(user_id, ip) values(1, 11231)'); dump($result); $result = Db::query('select * from log'); echo '
'; var_dump($result);
         

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Parameter bindingNamed placeholder binding

$str = 'insert into log(user_id, ip) values(?, ?)'; $result = Db::execute($str, [1, '12312']); $result = Db::query('select * from log where id = ?', [4]); //占位符 Db::execute('insert into log(user_id, ip) values(:user_id, :ip)', ['user_id'=>12, 'ip'=>'5555']);

Copy after login

Query Constructor

//添加： Db::table('log')->insert(['user_id'=>1, 'ip'=>'654321']); //更新 Db::table('log') ->where('id', 12) ->update(['user_id'=>123]); //查询数据 $list = Db::table('log') ->where('id', 12) ->select(); //删除数据 Db::table('log') ->where('id', 10) ->delete();

How to query the table without adding a prefix:

Db::name('log')->insert(['user_id'=>44, 'ip'=>5555]);

##5.

Chain operation

//自动控制事物 Db::transaction(function (){ Db::table('log')->delete(2); Db::table('log')->insert(['user_id'=>123]); }); //手动控制事物的提交 //启动事物 Db::startTrans(); try { Db::table('log') ->where(2); Db::table('log') ->insert(['user_id' => 213]); Db::commit(); } catch (Exception $e){ Db::rollback(); }

##How to link the database through ThinkPHP

How to connect multiple databases through thinkphp

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