intellij-idea - phpstorm does not display the method and attribute list, and does not automatically prompt the parent class method?

I am using phpstorm 10, and the following problems occurred:
1. Unable to display the list of methods and attributes defined in the class

2. $this is not prompted
3. Parent class methods and attributes are not prompted
4. In the method If the capitalization of function or class names is incorrect, no prompt will appear. For example, I have a method called sayHello, but if I enter sayh, it will not prompt me

Already tried many times

Baidu Google multi-page~~~

I hope you can give me some advice, thank you

Reply content:

I am using phpstorm 10, and the following problems occurred:
1. Unable to display the list of methods and attributes defined in the class

2. $this is not prompted
3. Parent class methods and attributes are not prompted
4. In the method When inputting incorrect capitalization for function and class names, no prompt will appear. For example, I have a method called sayHello, but when I enter sayh, it will not prompt me

Already tried many times

Baidu Google multi-page~~~

I hope you can give me some advice, thank you