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run code in 300+ PHP versions simultaneously
<?php class obj implements arrayaccess { private $container = array(); public function __construct() { $this->container = array( "one" => 1, "two" => 2, "three" => 3, ); } public function offsetSet($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; } } $obj = new obj; $obj["6"]["7"] = 7; var_dump($obj["two"]["2"]); var_dump($obj["6"]["7"]);
Output for 8.3.0 - 8.3.6
Deprecated: Return type of obj::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Tf4F6 on line 18 Deprecated: Return type of obj::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Tf4F6 on line 24 Deprecated: Return type of obj::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Tf4F6 on line 11 Deprecated: Return type of obj::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Tf4F6 on line 21 string(1) "6" Notice: Indirect modification of overloaded element of obj has no effect in /in/Tf4F6 on line 31 string(3) "two" Warning: Trying to access array offset on int in /in/Tf4F6 on line 33 NULL string(1) "6" Warning: Trying to access array offset on null in /in/Tf4F6 on line 34 NULL
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Deprecated: Return type of obj::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Tf4F6 on line 18 Deprecated: Return type of obj::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Tf4F6 on line 24 Deprecated: Return type of obj::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Tf4F6 on line 11 Deprecated: Return type of obj::offsetUnset($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/Tf4F6 on line 21 string(1) "6" Notice: Indirect modification of overloaded element of obj has no effect in /in/Tf4F6 on line 31 string(3) "two" Warning: Trying to access array offset on value of type int in /in/Tf4F6 on line 33 NULL string(1) "6" Warning: Trying to access array offset on value of type null in /in/Tf4F6 on line 34 NULL
Output for 8.0.0 - 8.0.30
string(1) "6" Notice: Indirect modification of overloaded element of obj has no effect in /in/Tf4F6 on line 31 string(3) "two" Warning: Trying to access array offset on value of type int in /in/Tf4F6 on line 33 NULL string(1) "6" Warning: Trying to access array offset on value of type null in /in/Tf4F6 on line 34 NULL
Output for 7.4.0 - 7.4.33
string(1) "6" Notice: Indirect modification of overloaded element of obj has no effect in /in/Tf4F6 on line 31 string(3) "two" Notice: Trying to access array offset on value of type int in /in/Tf4F6 on line 33 NULL string(1) "6" Notice: Trying to access array offset on value of type null in /in/Tf4F6 on line 34 NULL
Output for 7.3.32 - 7.3.33
string(1) "6" string(3) "two" NULL string(1) "6" NULL
Output for 5.2.1 - 5.2.17, 5.3.0 - 5.3.29, 7.3.0 - 7.3.31
string(1) "6" Notice: Indirect modification of overloaded element of obj has no effect in /in/Tf4F6 on line 31 string(3) "two" NULL string(1) "6" NULL
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33
int(6) Notice: Indirect modification of overloaded element of obj has no effect in /in/Tf4F6 on line 31 string(3) "two" NULL int(6) NULL
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
string(1) "6" Fatal error: Objects used as arrays in post/pre increment/decrement must return values by reference in /in/Tf4F6 on line 31
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/Tf4F6 on line 2
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/Tf4F6 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/Tf4F6 on line 2
Process exited with code 255.
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