1.2.133. Class Could Be Final¶
Any class that has no extension should be
finalby default.
As stated by Matthias Noback : If a class is not marked final, it has at least one subclass.
Prevent your classes from being subclassed by making them final. Sometimes, classes are not meant or thought to be derivable.
<?php
class x {} // This class is extended
class y extends x {} // This class is extended
class z extends y {} // This class is not extended
final class z2 extends y {} // This class is not extended
?>
See also Negative architecture, and assumptions about code and When to declare methods final.
1.2.133.1. Suggestions¶
Make the class final
Extends the class
1.2.133.2. Specs¶
Short name |
Classes/CouldBeFinal |
Rulesets |
|
Exakat since |
1.4.3 |
PHP Version |
All |
Severity |
Minor |
Time To Fix |
Quick (30 mins) |
Precision |
Very high |
Features |
final |
Available in |