<?php ini_set('error_reporting', -1); ini_set('display_errors', 'on'); class Foo { private static $a = []; public function generator() { foreach(self::$a as $i){ yield $i; } self::$a = []; } } $foo = new Foo; $generator = $foo->generator(); if ($generator->valid()) { foreach($generator as $i) { echo $i; } } else { echo 'Nothing'; }
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