ordered_interfaces.rst

Rule ordered_interfaces

Orders the interfaces in an implements or interface extends clause.

Warning

Using this rule is risky

Risky for implements when specifying both an interface and its parent interface, because PHP doesn't break on parent, child but does on child, parent.

Configuration

order

How the interfaces should be ordered

Allowed values: 'alpha', 'length'

Default value: 'alpha'

direction

Which direction the interfaces should be ordered

Allowed values: 'ascend', 'descend'

Default value: 'ascend'

Examples

Example #1

Default configuration.

--- Original
+++ New
 <?php

-final class ExampleA implements Gamma, Alpha, Beta {}
+final class ExampleA implements Alpha, Beta, Gamma {}

-interface ExampleB extends Gamma, Alpha, Beta {}
+interface ExampleB extends Alpha, Beta, Gamma {}

Example #2

With configuration: ['direction' => 'descend'].

--- Original
+++ New
 <?php

-final class ExampleA implements Gamma, Alpha, Beta {}
+final class ExampleA implements Gamma, Beta, Alpha {}

-interface ExampleB extends Gamma, Alpha, Beta {}
+interface ExampleB extends Gamma, Beta, Alpha {}

Example #3

With configuration: ['order' => 'length'].

--- Original
+++ New
 <?php

-final class ExampleA implements MuchLonger, Short, Longer {}
+final class ExampleA implements Short, Longer, MuchLonger {}

-interface ExampleB extends MuchLonger, Short, Longer {}
+interface ExampleB extends Short, Longer, MuchLonger {}

Example #4

With configuration: ['order' => 'length', 'direction' => 'descend'].

--- Original
+++ New
 <?php

-final class ExampleA implements MuchLonger, Short, Longer {}
+final class ExampleA implements MuchLonger, Longer, Short {}

-interface ExampleB extends MuchLonger, Short, Longer {}
+interface ExampleB extends MuchLonger, Longer, Short {}