1.2.476. Forgotten Interface

The following classes have been found implementing an interface’s methods, though it doesn’t explicitly implements this interface. This may have been forgotten.

<?php

interface i {
    function i();
}

// i is not implemented and declared
class foo {
    function i() {}
    function j() {}
}

// i is implemented and declared
class foo implements i {
    function i() {}
    function j() {}
}

?>

See also Could Use Trait.

1.2.476.1. Suggestions

• Mention interfaces explicitly whenever possible

1.2.476.2. Specs

Short name	Interfaces/CouldUseInterface
Rulesets	All, Analyze, Changed Behavior
Exakat since	0.11.7
PHP Version	All
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	High
Features	interface, ducktyping
Available in	Entreprise Edition, Exakat Cloud