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(; <?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, $item) { return array_merge($carry, $item); }));
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: array_merge(): Argument #1 must be of type array, null given in /in/nSUmI:9 Stack trace: #0 /in/nSUmI(9): array_merge(NULL, Array) #1 [internal function]: {closure}(NULL, Array) #2 /in/nSUmI(9): array_reduce(Array, Object(Closure)) #3 {main} thrown in /in/nSUmI on line 9
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
(; Warning: array_merge(): Expected parameter 1 to be an array, null given in /in/nSUmI on line 9 Warning: array_merge(): Expected parameter 1 to be an array, null given in /in/nSUmI on line 9 Warning: array_merge(): Expected parameter 1 to be an array, null given in /in/nSUmI on line 9
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33
(; Warning: array_merge(): Argument #1 is not an array in /in/nSUmI on line 9 Warning: array_merge(): Argument #1 is not an array in /in/nSUmI on line 9 Warning: array_merge(): Argument #1 is not an array in /in/nSUmI on line 9
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/nSUmI 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/nSUmI on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/nSUmI on line 9
Process exited with code 255.

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