3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo { function __toString() { return "bar";}} class obj implements ArrayAccess { private $container = array(); public function __construct() { $this->container = array( "one" => 1, "two" => 2, "three" => 3, ); } public function offsetSet($offset, $value) { var_dump('set', $offset, $value); if (is_null($offset)) { $this->container[] = $value; } else { $this->container[$offset] = $value; } } public function offsetExists($offset) { return isset($this->container[$offset]); } public function offsetUnset($offset) { unset($this->container[$offset]); } public function offsetGet($offset) { var_dump('get', $offset); return isset($this->container[$offset]) ? $this->container[$offset] : null; } } $a = new obj; $a[] += 12; var_dump($a);
based on nMqau
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.6 - 7.1.0
string(3) "get" NULL string(3) "set" NULL int(12) object(obj)#1 (1) { ["container":"obj":private]=> array(4) { ["one"]=> int(1) ["two"]=> int(2) ["three"]=> int(3) [0]=> int(12) } }
Output for 7.0.0 - 7.0.5
Notice: Undefined variable: offset in /in/ip8Y6 on line 32 string(3) "get" NULL Notice: Undefined variable: offset in /in/ip8Y6 on line 33 string(3) "set" NULL int(12) object(obj)#1 (1) { ["container":"obj":private]=> array(4) { ["one"]=> int(1) ["two"]=> int(2) ["three"]=> int(3) [0]=> int(12) } }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.1 - 5.2.17
string(3) "get" NULL string(3) "set" NULL int(12) object(obj)#1 (1) { ["container:private"]=> array(4) { ["one"]=> int(1) ["two"]=> int(2) ["three"]=> int(3) [0]=> int(12) } }
Output for 5.0.0

Process exited with code 139.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/ip8Y6 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/ip8Y6 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/ip8Y6 on line 3
Process exited with code 255.