在这种情况下如何找到PHP中函数的实现位置？

Question

I was just traversing the workflow of zend framework and cant really find where the function "findByUri()" is located, I found the class it belongs , simply dumping it, but going through the hierarchy of that class(parents , interfaces and so forth) I cant really find it. I found where it is called from

....
 call_user_func_array(
            array($this->getContainer(), $method),
            $arguments);
    ...

but it is not in there (the class that GetContainer() returns)

any Idea, I know u can assign a variable to class simple by $class->someVar =...; But never had done it with class functions... Thanks

Answer 1

There is no method by this name in the entire ZF. It's probably a magic accessor done within a __call method of $this->container. I take the snippet you provided is from Zend_View_Helper_Navigation_HelperAbstract, so it should be any of the classes belonging to the Zend_Navigation package.

EDIT
From the ZF Reference Manual on Zend_Navigation containers:

Containers have finder methods for retrieving pages. They are findOneBy($property, $value), findAllBy($property, $value), and findBy($property, $value, $all = false). Those methods will recursively search the container for pages matching the given $page->$property == $value. The first method, findOneBy(), will return a single page matching the property with the given value, or NULL if it cannot be found. The second method will return all pages with a property matching the given value. The third method will call one of the two former methods depending on the $all flag.

The finder methods can also be used magically by appending the property name to findBy, findOneBy, or findAllBy, e.g. findOneByLabel('Home') to return the first matching page with label Home. Other combinations are findByLabel(...), findOnyByTitle(...), findAllByController(...), etc. Finder methods also work on custom properties, such as findByFoo('bar').