首页 \ 问答 \ PHP中的方法是否有相当于var_dump的方法？(Is there an equivalent of var_dump for methods in PHP?)

PHP中的方法是否有相当于var_dump的方法？(Is there an equivalent of var_dump for methods in PHP?)

 我正在研究一些遗留代码，我需要从一个对象中获取一些信息。 例如，价格。 价格可以存储在变量中，也可以通过方法检索。 我还不知道，只是它存在于对象中。  
 我可以在代码中获取一个对象，并通过var_dump获取所有变量，以查看运行时当前可用的内容。 但有时我所需要的不是由  
$item->price
 
 但需要通过检索  
$item->get_price()
 
 在我看来，能够以与我可以从变量转储信息相同的方式转储方法中的信息会非常有帮助。  
 因此，理想情况下，我会在代码中使用此命令，并且它将最低限度返回可在对象上调用的所有方法的列表。 理想情况下，如果这些方法没有输入，那么它也会返回它们的返回值。  
 PHP中是否存在这样的命令？ 在任何语言？ 

I'm working on some legacy code and I need to get some information from an object. The price, for example. The price could be stored in a variable or it could be retrieved via a method. I don't yet know, only that it exists within the object. 
I can grab an object in the code and var_dump all of the variables to have a look-see at what's available at that point in the runtime. But sometimes what I need isn't returned by 
$item->price
 
but instead needs to be retrieved by 
$item->get_price()
 
It seems to me it would be really helpful to be able to dump information from methods in the same way as I can dump information from variables.  
So ideally I'd stick this command in the code, and it would return minimally a list of all methods that can be called on the object. Ideally, if those methods have no inputs, then it would also return their return values too. 
Does such a command exist in PHP? In any language?

原文：https://stackoverflow.com/questions/33550182

更新时间：2022-06-29 22:06

最满意答案

 假设您已访问网格视图：  
final GridView gw = [...];
 
 要设置上面的所有属性，您应该写：  
// This line applies to a GridView that you've just created
gv.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
// The next two lines are for a GridView that you already have displayed
gv.getLayoutParams().width = LayoutParams.FILL_PARENT;
gv.getLayoutParams().height = LayoutParams.FILL_PARENT;

gv.setNumColumns(GridView.AUTO_FIT);
gv.setVerticalSpacing(convertFromDp(10));
gv.setHorizontalSpacing(convertFromDp(10));
gv.setColumnWidth(convertFromDp(90));
gv.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
gv.setGravity(Gravity.CENTER);
 
 要设置LayoutParams ，您必须在上述两种情况之间进行选择。 

say you have the grid view accessed:  
final GridView gw = [...];
 
For setting all the attributes above you should write:  
// This line applies to a GridView that you've just created
gv.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
// The next two lines are for a GridView that you already have displayed
gv.getLayoutParams().width = LayoutParams.FILL_PARENT;
gv.getLayoutParams().height = LayoutParams.FILL_PARENT;

gv.setNumColumns(GridView.AUTO_FIT);
gv.setVerticalSpacing(convertFromDp(10));
gv.setHorizontalSpacing(convertFromDp(10));
gv.setColumnWidth(convertFromDp(90));
gv.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
gv.setGravity(Gravity.CENTER);
 
For setting the LayoutParams, you must choose between the two situations above.

PHP中的方法是否有相当于var_dump的方法？(Is there an equivalent of var_dump for methods in PHP?)

最满意答案

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