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run code in 150+ php & hhvm versions
Bugs & Features
<?php class Maps implements Iterator { protected $key, $data; public function __construct() { $key = new stdClass; $value = new stdClass; $key->long = 1.1; $key->lat = 42.0; $value = "New York, NY"; $this->data[] = array($key, $value); $key->long = 2.2; $key->lat = 24.0; $value = "Rochester, NY"; $this->data[] = array($key, $value); } public function key() { return $this->data[0]; } public function current() { return $this->data[1]; } public function next() { next($this->data); } public function valid() { return key($this->data) !== null; } public function rewind() { reset($this->data); } } $maps = new Maps; foreach($maps as $keyMap => $locationMap) { var_dump($keyMap, $locationMap); }
based on 0tfSW
Output for 5.5.24 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> object(stdClass)#2 (2) { ["long"]=> float(2.2) ["lat"]=> float(24) } [1]=> string(12) "New York, NY" } array(2) { [0]=> object(stdClass)#2 (2) { ["long"]=> float(2.2) ["lat"]=> float(24) } [1]=> string(13) "Rochester, NY" } array(2) { [0]=> object(stdClass)#2 (2) { ["long"]=> float(2.2) ["lat"]=> float(24) } [1]=> string(12) "New York, NY" } array(2) { [0]=> object(stdClass)#2 (2) { ["long"]=> float(2.2) ["lat"]=> float(24) } [1]=> string(13) "Rochester, NY" }
Output for hhvm-3.10.0

Process exited with code 137.
Output for 5.0.0 - 5.4.45
Warning: Illegal type returned from Maps::key() in /in/5oYNB on line 57 int(0) array(2) { [0]=> object(stdClass)#2 (2) { ["long"]=> float(2.2) ["lat"]=> float(24) } [1]=> string(13) "Rochester, NY" } Warning: Illegal type returned from Maps::key() in /in/5oYNB on line 57 int(0) array(2) { [0]=> object(stdClass)#2 (2) { ["long"]=> float(2.2) ["lat"]=> float(24) } [1]=> string(13) "Rochester, NY" }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/5oYNB on line 3
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/5oYNB on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/5oYNB on line 3
Process exited with code 255.