是否可以在PHP类中从一个静态变量引用到另一个静态变量?是否有可能从一个静态变量引用到另一个(在类中)?
class EmployeeDAO
{
private static $FIND_ALL = 'SELECT * FROM employee';
private static $FIND_BY_NAME = self::$FIND_ALL . // This is not allowed!
' WHERE employee.name LIKE :name';
}
我看,把它变成私有从7.1开始的唯一途径? – LowLevel
http://stackoverflow.com/questions/6770407/php-private-const – LowLevel
@LowLevel是的,https://secure.php.net/ChangeLog-7.php#7.1.0 –