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run code in 200+ php & hhvm versions
Bugs & Features
<?php class MyIterator implements Iterator { private static $data; private $var = array(1,2,3); private $current; private $rewind; private $key; public function __construct($array = null) { if (is_array($array)) { $this->var = $array; } } public function __set($name, $value) { return $this->var[$name] = $value; } public function __get($name) { if (isset($this->var[$name])) { return $this->var[$name]; } } public function many() { if($this->rewind){ self::$data['many'] = array(88,99,11); } return self::$data['many'][$this->key]; } public function manys() { if($this->rewind){ self::$data['manys'] = array(55,66,77); } return self::$data['manys'][$this->key]; } public function rewind() { self::$data = null; $this->rewind = true; //echo "rewinding\n"; reset($this->var); } public function current() { $var = current($this->var); $this->current = $var; //echo "current: $var\n"; return $var; } public function key() { $var = key($this->var); $this->key = $var; //echo "key: $var\n"; return $var; } public function next() { $var = next($this->var); //echo "next: $var\n"; $this->rewind = false; return $var; } public function valid() { $key = key($this->var); $var = ($key !== NULL && $key !== FALSE); //echo "valid: $var\n"; return $var; } } class foo extends MyIterator{ public function test(){ return $this->many(); } public function test2(){ return $this->manys(); } } $it = new foo(); echo PHP_EOL . $it->test() . PHP_EOL . PHP_EOL; echo PHP_EOL . $it->test2() . PHP_EOL . PHP_EOL; $it = new foo(); foreach ($it as $a => $b) { echo PHP_EOL . $it->test() . PHP_EOL . PHP_EOL; echo PHP_EOL . $it->test2() . PHP_EOL . PHP_EOL; print "$a: $b\n"; }
Output for 5.6.30, hhvm-3.15.4 - 3.22.0, 7.0.0 - 7.2.9
88 55 0: 1 99 66 1: 2 11 77 2: 3