3v4l.org

run code in 300+ PHP versions simultaneously
<?php class IssetArray extends \ArrayObject { public function &offsetGet($offset) { $var = $this->offsetExists($offset) ? parent::offsetGet($offset) : null; return $var; } } $array = new \IssetArray(); $array['item'] = 123; var_dump($array['item']); var_dump($array['item']['foo']); var_dump($array['something']['noItem']); $array['something']['foo'] = 'bar'; var_dump($array['something']['foo']);
Output for 8.3.0 - 8.3.6
Deprecated: Return type of & IssetArray::offsetGet($offset) should either be compatible with ArrayObject::offsetGet(mixed $key): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/nAi6h on line 5 int(123) Warning: Trying to access array offset on int in /in/nAi6h on line 15 NULL Warning: Trying to access array offset on null in /in/nAi6h on line 16 NULL Warning: Trying to access array offset on null in /in/nAi6h on line 19 NULL
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Deprecated: Return type of & IssetArray::offsetGet($offset) should either be compatible with ArrayObject::offsetGet(mixed $key): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/nAi6h on line 5 int(123) Warning: Trying to access array offset on value of type int in /in/nAi6h on line 15 NULL Warning: Trying to access array offset on value of type null in /in/nAi6h on line 16 NULL Warning: Trying to access array offset on value of type null in /in/nAi6h on line 19 NULL
Output for 8.0.0 - 8.0.30
int(123) Warning: Trying to access array offset on value of type int in /in/nAi6h on line 15 NULL Warning: Trying to access array offset on value of type null in /in/nAi6h on line 16 NULL Warning: Trying to access array offset on value of type null in /in/nAi6h on line 19 NULL
Output for 7.4.0 - 7.4.33
int(123) Notice: Trying to access array offset on value of type int in /in/nAi6h on line 15 NULL Notice: Trying to access array offset on value of type null in /in/nAi6h on line 16 NULL Notice: Trying to access array offset on value of type null in /in/nAi6h on line 19 NULL
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
int(123) NULL NULL NULL
Output for 5.3.4 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
int(123) NULL NULL Notice: Indirect modification of overloaded element of IssetArray has no effect in /in/nAi6h on line 18 NULL
Output for 5.3.0 - 5.3.3
Fatal error: Declaration of IssetArray::offsetGet() must be compatible with that of ArrayAccess::offsetGet() in /in/nAi6h on line 9
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAi6h on line 3 Fatal error: Declaration of IssetArray::offsetGet() must be compatible with that of ArrayAccess::offsetGet() in /in/nAi6h on line 9
Process exited with code 255.
Output for 5.0.4 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAi6h on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAi6h on line 11 int(123) NULL NULL Fatal error: Objects used as arrays in post/pre increment/decrement must return values by reference in /in/nAi6h on line 18
Process exited with code 255.
Output for 5.0.0 - 5.0.3
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAi6h on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAi6h on line 11 int(123) NULL Notice: Undefined index: something in /in/nAi6h on line 16 NULL Notice: Undefined index: something in /in/nAi6h on line 18 Fatal error: Objects used as arrays in post/pre increment/decrement must return values by reference in /in/nAi6h on line 18
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAi6h on line 3 Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/nAi6h on line 5
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
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAi6h on line 3 Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/nAi6h on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAi6h on line 3 Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/nAi6h on line 5
Process exited with code 255.

preferences:
295.8 ms | 402 KiB | 325 Q