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7th Gear (v3.59.3) edition

Rule self_static_accessor

Inside an enum or final/anonymous class, self should be preferred over static.

Examples

Example #1

--- Original
+++ New
 <?php
 final class Sample
 {
     private static $A = 1;

     public function getBar()
     {
-        return static::class.static::test().static::$A;
+        return self::class.self::test().self::$A;
     }

     private static function test()
     {
         return 'test';
     }
 }

Example #2

--- Original
+++ New
 <?php
 final class Foo
 {
     public function bar()
     {
-        return new static();
+        return new self();
     }
 }

Example #3

--- Original
+++ New
 <?php
 final class Foo
 {
     public function isBar()
     {
-        return $foo instanceof static;
+        return $foo instanceof self;
     }
 }

Example #4

--- Original
+++ New
 <?php
 $a = new class() {
     public function getBar()
     {
-        return static::class;
+        return self::class;
     }
 };

Example #5

--- Original
+++ New
 <?php
 enum Foo
 {
     public const A = 123;

     public static function bar(): void
     {
-        echo static::A;
+        echo self::A;
     }
 }

Rule sets

The rule is part of the following rule set:

References

The test class defines officially supported behaviour. Each test case is a part of our backward compatibility promise.