3v4l.org

run code in 300+ PHP versions simultaneously
; <?php $arrays = array( 0 => array( 0 => 'one', 1 => 'two', 2 => 'three' ), 1 => array( 0 => 'four', 1 => 'five', 2 => 'six' ), 2 => array( 0 => 'seven', 1 => 'eight', 2 => 'nine' ) ); print_r(array_reduce($arrays, function($carry, $item) { $carry += $item; return $carry; }));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
; Fatal error: Uncaught TypeError: Unsupported operand types: null + array in /in/RouHp:9 Stack trace: #0 [internal function]: {closure}(NULL, Array) #1 /in/RouHp(9): array_reduce(Array, Object(Closure)) #2 {main} thrown in /in/RouHp on line 9
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
; Fatal error: Uncaught Error: Unsupported operand types in /in/RouHp:9 Stack trace: #0 [internal function]: {closure}(0, Array) #1 /in/RouHp(9): array_reduce(Array, Object(Closure)) #2 {main} thrown in /in/RouHp on line 9
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
; Fatal error: Unsupported operand types in /in/RouHp on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/RouHp on line 9
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/RouHp on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/RouHp on line 9
Process exited with code 255.

preferences:
289.75 ms | 401 KiB | 459 Q