Can't use function return value in write context 使用empty遇到报错
Note: empty() only checks variables as anything else will result in a parse error. In other words, the following will not work: empty(trim($name)).
empty() 只检测变量，检测任何非变量的东西都将导致解析错误!
Note: empty() only checks variables as anything else will result in a parse error. In other words, the following will not work: empty(trim($name)).
empty() 只检测变量，检测任何非变量的东西都将导致解析错误!
