php CodeIgniter 中的公共函数与函数
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/9849984/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Public functions vs Functions in CodeIgniter
提问by Derfder
In PHP, What is the difference between declaring methods inside class like
在 PHP 中，在类中声明方法有什么区别
public functionVS function
public functionVS function
For example:
例如：
public function contact()
{
$data['header'] = "Contact";
$this->load->view('admin/admin_contact', $data);
}
VS
VS
function contact()
{
$data['header'] = "Contact";
$this->load->view('admin/admin_contact', $data);
}
Is it better practice to use public functionor functionand why?
使用公共函数或函数是更好的做法，为什么？
采纳答案by sas
Methods declared with any explicit visibility keyword is best practice. It looks and feels better and it doesn't confuse people.
使用任何显式可见性关键字声明的方法是最佳实践。它看起来和感觉更好，并且不会混淆人们。
- Most PHP5 coding conventions (e.g. Zend, Symfony...) require the public keyword, so it's familiar.
- It means that variable and method declarations use the same syntax.
- It's more explicit and forces developers to consider their method visibility.
- 大多数 PHP5 编码约定（例如 Zend、Symfony...）都需要 public 关键字，所以它很熟悉。
- 这意味着变量和方法声明使用相同的语法。
- 它更加明确并迫使开发人员考虑他们的方法可见性。
回答by Joseph
According to PHP.net
根据PHP.net
Class methods may be defined as public, private, or protected. Methods declared without any explicit visibility keyword are defined as public.
类方法可以定义为 public、private 或 protected。没有任何显式可见性关键字声明的方法被定义为 public。
for best practice, i suggest using visibility keywords (esp when using higher versions of PHP). it prevents confusion (like the one you are in now) and promotes standard practice in coding.
对于最佳实践，我建议使用可见性关键字（尤其是在使用更高版本的 PHP 时）。它可以防止混淆（就像你现在所处的那样）并促进编码的标准实践。
回答by romoti
There is no difference between these two.
Both are the same.
In codeigniter both have same meaning
and can be called by using standard URI tags unless you give a '_' in front of your function name
_fname()will not be called
这两者没有区别。两者都是一样的。在 codeigniter 中，两者具有相同的含义，可以使用标准 URI 标签调用，除非您在函数名称前提供“_”，
_fname()否则不会被调用
回答by Manse
回答by Bananenspin
If you really want best practice you will always use public. But for the codeigniter Framework it doesn't mather if you declare it public or not. Note that if you want a controller to be private you dont use private but you will use the underscore (_) in front of your controller name so it wont be visible.
如果您真的想要最佳实践，您将始终使用 public。但是对于 codeigniter 框架，无论您是否将其声明为 public 都无关紧要。请注意，如果您希望控制器是私有的，则不要使用私有，而是在控制器名称前使用下划线 (_)，这样它就不会可见。
回答by jerrytom
- Both declarations are same and both functions will be available by URI request in codeigniter
- To prevent a method from being called by user use private or protected access specifiers.
- 两个声明是相同的，两个函数都可以通过 codeigniter 中的 URI 请求使用
- 要防止用户调用方法，请使用私有或受保护的访问说明符。
