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<?php function getPairs(array $data) { if(!($end=count($data))) { return null; } shuffle($data); $result = [[$data[0], $data[$end-1]]]; for($i=0; $i<$end-1; $i++) { $result[] = [$data[$i], $data[$i+1]]; } return $result; } $data = ['First', 'Second', 'Third', 'Fourth', 'Fifth', 'Sixth']; var_dump(getPairs([]));
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
NULL
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/LnqdD on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/LnqdD on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/LnqdD 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_ARRAY, expecting ')' in /in/LnqdD on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/LnqdD on line 2
Process exited with code 255.
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203.06 ms | 401 KiB | 325 Q