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run code in 300+ PHP versions simultaneously
<?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, $value) { var_dump($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($offset); return isset($this->container[$offset]) ? $this->container[$offset] : null; } } $a = new obj; $a[] += 12; var_dump($a);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of obj::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/nMqau on line 23 Deprecated: Return type of obj::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/nMqau on line 31 Deprecated: Return type of obj::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/nMqau on line 14 Deprecated: Return type of obj::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/nMqau on line 27 NULL 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 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.6 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
NULL 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/nMqau on line 32 NULL Notice: Undefined variable: offset in /in/nMqau on line 33 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 5.0.1 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
NULL 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/nMqau on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/nMqau on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/nMqau on line 3
Process exited with code 255.
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