PHP namespaces and use

Question

I am having a little trouble with namespaces and the use statements   I have three files  ShapeInterface php  Shape php and Circle php   I am trying to do this using relative paths so I have put this in all of the classes   namespace Shape     In my circle class I have the following   namespace Shape    use Shape    use ShapeInterface   include  Shape php   include  ShapeInterface php        class Circle extends Shape implements ShapeInterface         If I use the include statements I get no errors  If I try the use statements I get      Fatal error  Class  Shape Shape  not found in    Users shawn Documents work sites workspace shape Circle php on line 8   Could someone please give me a little guidance on the issue

User · Accepted Answer

The use operator is for giving aliases to names of classes  interfaces or other namespaces  Most use statements refer to a namespace or class that you d like to shorten   use My Full Namespace    is equivalent to   use My Full Namespace as Namespace     Namespace Foo is now shorthand for My Full Namespace Foo   If the use operator is used with a class or interface name  it has the following uses      after this   new DifferentName     would instantiate a My Full Classname use My Full Classname as DifferentName      global class - making  new ArrayObject    and  new  ArrayObject    equivalent use ArrayObject    The use operator is not to be confused with autoloading  A class is autoloaded  negating the need for include  by registering an autoloader  e g  with spl autoload register   You might want to read PSR-4 to see a suitable autoloader implementation

User · Answer

If you need to order your code into namespaces  just use the keyword namespace   file1 php  namespace foo bar    In file2 php   obj   new  foo bar myObj      You can also use use  If in file2 you put  use foo bar as mypath   you need to use mypath instead of bar anywhere in the file    obj    new mypath myObj      Using use foo bar  is equal to use foo bar as bar

[php] PHP namespaces and "use"

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