1.2.1248. Undefined Interfaces

Some typehints or instanceof that are relying on undefined interfaces or classes. They will always return false. Any condition based upon them are dead code.

<?php

class var implements undefinedInterface {
    // If undefinedInterface is undefined, this code lints but doesn't run
}

if ($o instanceof undefinedInterface) {
    // This is silent dead code
}

function foo(undefinedInterface $a) {
    // This is dead code
    // it will probably be discovered at execution
}

?>

See also Object interfaces, Type declarations and Instanceof.

1.2.1248.1. Suggestions

• Implement the missing interfaces

• Remove the code governed by the missing interface : the whole method if it is an typehint, the whole if/then if it is a condition.

1.2.1248.2. Specs

Short name	Interfaces/UndefinedInterfaces
Rulesets	All, Analyze, CE, CI-checks, Changed Behavior, LintButWontExec
Exakat since	0.8.4
PHP Version	All
Severity	Major
Time To Fix	Quick (30 mins)
Precision	High
Features	interface
Examples	xataface
Note	This issue may lint but will not run
Available in	Entreprise Edition, Community Edition, Exakat Cloud