and let’s assume the following content of Bar.php:
// Bar.phpnamespaceOtherDir;useSomeDir\Foo;// This now conflicts the class OtherDir\Foo
If both files OtherDir/Foo.php and SomeDir/Foo.php are loaded in the
same runtime, you will see a PHP error such as the following:
PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as OtherDir/Foo.php does not necessarily have to be loaded and the
error is only triggered if it is loaded before OtherDir/Bar.php, this problem
might go unnoticed for a while. In order to prevent this error from surfacing,
you must import the namespace with a different alias:
// Bar.phpnamespaceOtherDir;useSomeDir\FooasSomeDirFoo;// There is no conflict anymore.
For interfaces and abstract methods it is generally a good practice to add a @return annotation even if it is just @return void or @return null, so that implementors know what to do in the overridden method.
For interface and abstract methods, it is impossible to infer the return type
from the immediate code. In these cases, it is generally advisible to explicitly
annotate these methods with a @return doc comment to communicate to implementors
of these methods what they are expected to return.
The class yentu\Reversible does not exist. Did you forget a USE statement, or did you not list all dependencies?
This error could be the result of:
1. Missing dependencies
PHP Analyzer uses your composer.json file (if available) to determine the
dependencies of your project and to determine all the available classes and functions.
It expects the composer.json to be in the root folder of your repository.
Are you sure this class is defined by one of your dependencies, or did you maybe
not list a dependency in either the require or require-dev section?
2. Missing use statement
PHP does not complain about undefined classes in ìnstanceof checks. For
example, the following PHP code will work perfectly fine:
if($xinstanceofDoesNotExist){// Do something.}
If you have not tested against this specific condition, such errors might go
unnoticed.
ntentan /
yentu
Loading history...
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: