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<?php class DoctorFilter extends FilterIterator { public function accept(): bool { $obj = $this->getInnerIterator()->current(); return is_string($obj) && str_starts_with($obj, 'Dr.'); } } $people = [ 'Dr. Jekyll', 'Mr. Hyde', // This item will be removed 'Dr. Frankenstein', ]; foreach (new DoctorFilter(new ArrayIterator($people)) as $item) { echo $item.PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
Dr. Jekyll Dr. Frankenstein

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