2016-08-22 15:20:13浏览(4540)作者:itnoob 来源:本站原创
//间接判断是否为空 $a = null;//$a = ''; $b = explode(',',$a); var_dump($b[0]);
//合并数组并去除重复项 <?php $a = ['css','bug','hack']; $b = ['ghost','大写','小心','hack','css']; $c = array_unique(array_merge($a,$b)); ?>
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//修改mysql root 密码 SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpassword'); update mysql.user set authentication_string=password('123456') where user='root' and Host = 'localhost'; //mysql8.0 ALTER USER 'root'@'localhost' IDENTIFIED BY 'your-password'; //mysql 允许远程登录 需要手动增加可以远程访问数据库的用户。 方法一、本地登入mysql,更改 "mysql" 数据库里的 "user" 表里的 "host" 项,将"localhost"改为"%" #mysql -u root -proot mysql>use mysql; mysql>update user set host = '%' where user = 'root'; mysql>select host, user from user; 方法二、直接授权(推荐) 从任何主机上使用root用户,密码:youpassword(你的root密码)连接到mysql服务器: # mysql -u root -proot mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'yourpassword' WITH GRANT OPTION; 操作完后切记执行以下命令刷新权限 FLUSH PRIVILEGES
TP5模型查询 Charge为模型类 //获取满足条件的数据 Charge::where($condition)->column('*'); //'*'代表所有列 数组 Charge::where($condition)->select(); // 对象数组 //获取满足条件的一条数据 Charge::where($condition)->find(); // 单个对象 Charge::where($condition)->find()->toArray(); // 单个数组 时间戳转换 Charge::where($condition)->find()->getData(); // 单个数组 原始数据 //动态查询 根据某字段查询某条记录 Charge::getById(1); Charge::getById(1)->toArray(); Charge::getById(1)->getData(); //获取某一字段的值 Charge::where($condition)->value('status'); Charge::getFieldById($id,'status');
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