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<?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 $var = array(); private $count = 0; public function __construct($array) { if (is_array($array)) { $this->var = $array; } } // Required definition of interface IteratorAggregate public function getIterator() { return new MyIterator($this->var); } public function add($value) { $this->items[$this->count++] = $value; } } $coll = new MyCollection(); $coll->add('value 1'); $coll->add('value 2'); $coll->add('value 3'); foreach ($coll as $key => $val) { echo "key/value: [$key -> $val]\n\n"; } ?>
Output for 7.1.0
Fatal error: Uncaught ArgumentCountError: Too few arguments to function MyCollection::__construct(), 0 passed in /in/8LCtC on line 76 and exactly 1 expected in /in/8LCtC:60 Stack trace: #0 /in/8LCtC(76): MyCollection->__construct() #1 {main} thrown in /in/8LCtC on line 60
Process exited with code 255.
Output for 5.1.0 - 5.6.28, 7.0.0 - 7.0.14
Warning: Missing argument 1 for MyCollection::__construct(), called in /in/8LCtC on line 76 and defined in /in/8LCtC on line 60 Notice: Undefined variable: array in /in/8LCtC on line 62 rewinding valid:
Output for hhvm-3.10.0 - 3.13.2
Warning: __construct() expects exactly 1 parameter, 0 given in /in/8LCtC on line 62 Notice: Undefined variable: array in /in/8LCtC on line 62 rewinding valid:
Output for 5.0.0 - 5.0.5
Warning: Missing argument 1 for MyCollection::__construct() in /in/8LCtC on line 60 rewinding valid:
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/8LCtC on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/8LCtC on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/8LCtC on line 2
Process exited with code 255.