1.2.100. Can’t Implement Traversable

It is not possible to implement the Traversable interface. The alternative is to implement Iterator or IteratorAggregate, which also implements Traversable.

Traversable may be useful when used with instanceof.

<?php

// This lints, but doesn't run
class x implements Traversable {

}

if( $argument instanceof Traversable ) {
    // doSomething
}

?>

See also Traversable, Iterator and IteratorAggregate.

1.2.100.1. Suggestions

• Implement Iterator or IteratorAggregate

1.2.100.2. Specs

Short name	Interfaces/CantImplementTraversable
Rulesets	All, Analyze, CE, CI-checks, Changed Behavior, LintButWontExec
Exakat since	1.9.8
PHP Version	All
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	Very high
Features	interface
Note	This issue may lint but will not run
Available in	Entreprise Edition, Community Edition, Exakat Cloud