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run code in 150+ php & hhvm versions
Bugs & Features
<?php class MyIterator implements Iterator { private $var = array(); public function __construct($array) { if (is_array($array)) { $this->var = $array; } } public function rewind() { echo "rewinding\n"; reset($this->var); } public function current() { $var = current($this->var); echo "current: $var\n"; return $var; } public function key() { $var = key($this->var); echo "key: $var\n"; return $var; } public function next() { $var = next($this->var); echo "next: $var\n"; return $var; } public function valid() { $key = key($this->var); $var = ($key !== NULL && $key !== FALSE); echo "valid: $var\n"; return $var; } } $values = array(1,2,3); $it = new MyIterator($values); class MyCollection implements IteratorAggregate { private $items = array(); private $count = 0; // Required definition of interface IteratorAggregate public function getIterator() { return new MyIterator($this->items); } public function add($value) { $this->items[$this->count++] = $value; } } $values = array('value 1','value 2','value 3'); $coll = new MyCollection(); foreach ($coll as $key => $val) { echo "key/value: [$key -> $val]\n\n"; } ?>
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
rewinding valid:
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected T_STRING, expecting '{' in <b>/in/X6B50</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected T_STRING, expecting '{' in <b>/in/X6B50</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `'{'' in <b>/in/X6B50</b> on line <b>2</b><br />
Process exited with code 255.