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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) { $carry += $item; }));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: Unsupported operand types: null + array in /in/EbpDl:9 Stack trace: #0 [internal function]: {closure}(NULL, Array) #1 /in/EbpDl(9): array_reduce(Array, Object(Closure)) #2 {main} thrown in /in/EbpDl on line 9
Process exited with code 255.

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