About ThinkPHP 5. Some basic operations of database

New

Normal new

$User = M("User"); // 实例化User对象$data['name'] = 'ThinkPHP';$data['email'] = 'ThinkPHP@gmail.com';$User->add($data);

Continuous operation

$User = M("User"); // 实例化User对象$data['name'] = 'ThinkPHP';$data['email'] = 'ThinkPHP@gmail.com';$User->data($data)->add();

Use Create

$User = M("User"); // 实例化User对象
 // 根据表单提交的POST数据创建数据对象$User->create();$User->add(); // 根据条件保存修改的数据

Batch insert data

$User->addAll($data)

Read Take the

select method

$User = M("User"); // 实例化User对象
 // 查找status值为1的用户数据 以创建时间排序 返回10条数据$list = $User->where('status=1')->order('create_time')->limit(10)->select();

array as the query condition

$User = M("User"); // 实例化User对象$condition['name'] = 'thinkphp';$condition['status'] = 1; // 把查询条件传入查询方法$User->where($condition)->select();

Change the logical relationship of multiple conditions

$User = M("User"); // 实例化User对象$condition['name'] = 'thinkphp';$condition['account'] = 'thinkphp';$condition['_logic'] = 'OR'; // 把查询条件传入查询方法$User->where($condition)->select();

Object mode query

$User = M("User"); // 实例化User对象
 // 定义查询条件$condition = new stdClass(); 
$condition->name = 'thinkphp'; 
$condition->status= 1; 
$User->where($condition)->select();

Expression query

$User = M("User"); // 实例化User对象
 // 要修改的数据对象属性赋值$data['name'] = 'ThinkPHP';$data['score'] = array('exp','score+1');// 用户的积分加1$User->where('id=5')->save($data); // 根据条件保存修改的数据

Quick or query

$User = M("User"); // 实例化User对象$map['name|title'] = 'thinkphp'; // 把查询条件传入查询方法$User->where($map)->select();

Quick multi-field and query

$User = M("User"); // 实例化User对象$map['status&title'] =array('1','thinkphp','_multi'=>true); // 把查询条件传入查询方法$User->where($map)->select();

Interval query

$map['id'] = array(array('gt',1),array('lt',10)) ;

find method

$User = M("User"); // 实例化User对象
 // 查找status值为1name值为think的用户数据 $User->where('status=1 AND name="think"')->find();

Limit field

$User = M("User"); // 实例化User对象
 // 获取ID为3的用户的昵称 $nickname = $User->where('id=3')->getField('nickname');

Return an array composed of one field

$this->getField('id',true); // 获取id数组

Multiple fields return an associative array

$User = M("User"); // 实例化User对象
 // 获取所有用户的ID和昵称列表 $list = $User->getField('id,nickname');

Limit the number of returns

$this->getField('id,name',5); // 限制返回5条记录

left join

$Model->join(' work ON artist.id = work.artist_id')->join('card ON artist.card_id = card.id')->select();$Model->join('RIGHT JOIN work ON artist.id = work.artist_id')->select();

More query methods can be found here:
http://doc.thinkphp.cn/manual/query.html

Update

Update after condition selection

$User = M("User"); // 实例化User对象
 // 要修改的数据对象属性赋值$data['name'] = 'ThinkPHP';$data['email'] = 'ThinkPHP@gmail.com';$User->where('id=5')->save($data); // 根据条件保存修改的数据

Continuous operation

$User = M("User"); // 实例化User对象
 // 要修改的数据对象属性赋值$data['name'] = 'ThinkPHP';$data['email'] = 'ThinkPHP@gmail.com';//更新时间字段$data['time']=date("Y-m-d H:i:s", time());$User->where('id=5')->data($data)->save(); // 根据条件保存修改的数据

Update specific fields

$User = M("User"); // 实例化User对象
 // 更改用户的name值$User-> where('id=5')->setField('name','ThinkPHP');

Update multiple fields

$User = M("User"); // 实例化User对象
 // 更改用户的name和email的值$data = array('name'=>'ThinkPHP','email'=>'ThinkPHP@gmail.com');$User-> where('id=5')->setField($data);

Increase and decrease

$User = M("User"); // 实例化User对象$User->where('id=5')->setInc('score',3); // 用户的积分加3$User->where('id=5')->setInc('score'); // 用户的积分加1$User->where('id=5')->setDec('score',5); // 用户的积分减5$User->where('id=5')->setDec('score'); // 用户的积分减1

Delete

Conditional deletion

$User = M("User"); // 实例化User对象$User->where('id=5')->delete(); // 删除id为5的用户数据$User->where('status=0')->delete(); // 删除所有状态为0的用户数据

Limit the number of deletions

$User->where('status=0')->order('create_time')->limit('5')->delete();

Transaction

启动事务：$User->startTrans(); 
 提交事务：$User->commit();
 事务回滚：$User->rollback();

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