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run code in 150+ php & hhvm versions
Bugs & Features
<?php class Widget //implements Serializable { public $references = array(); public function serialize() { $vars = get_object_vars($this); $serialized = serialize($vars); return $serialized; } public function unserialize($serialized) { $array = unserialize($serialized); foreach($array as $k => $v) $this->$k = $v; } } class Placeholder { public $id; public function __construct($id) { $this->id = $id; } } $placeholder1 = new Placeholder(1); $placeholder2 = new Placeholder(2); $widgets = array(new Widget, new Widget, new Widget, new Widget); $widgets[0]->references[] = $placeholder1; $widgets[1]->references[] = $placeholder2; $widgets[2]->references[] = $placeholder1; $widgets[3]->references[] = $placeholder1; var_dump(unserialize(serialize($widgets)));
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(4) { [0]=> object(Widget)#7 (1) { ["references"]=> array(1) { [0]=> object(Placeholder)#8 (1) { ["id"]=> int(1) } } } [1]=> object(Widget)#9 (1) { ["references"]=> array(1) { [0]=> object(Placeholder)#10 (1) { ["id"]=> int(2) } } } [2]=> object(Widget)#11 (1) { ["references"]=> array(1) { [0]=> object(Placeholder)#8 (1) { ["id"]=> int(1) } } } [3]=> object(Widget)#12 (1) { ["references"]=> array(1) { [0]=> object(Placeholder)#8 (1) { ["id"]=> int(1) } } } }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/HZCX5 on line 4
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 T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/HZCX5 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/HZCX5 on line 4
Process exited with code 255.