1.2.103. Can’t Implement Traversable¶

It is not possible to implement the Traversable interface directly. It is possible to implement it via the Iterator and IteratorAggregate classes, which, in turn, implements Traversable.

Traversable may be useful when used with instanceof, catch or any type specification.

<?php

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

}

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

?>

See also Traversable, Iterator and IteratorAggregate.

1.2.103.2. Connex PHP features¶

interface

throwable

1.2.103.2.1. Suggestions¶

Extend Iterator or IteratorAggregate.

1.2.103.2.2. 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
Note	This issue may lint but will not run
Available in	Entreprise Edition, Community Edition, Exakat Cloud