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<?php function getCombinedSum($digits, $sum) { if(!is_int($digits) || !is_int($sum) || $digits<1 || $sum<0) { throw new InvalidArgumentException('Invalid numeric format'); } if($sum>9*$digits) { throw new LogicException('Sum out of range'); } if($digits==1) { return [$sum]; } $result = []; $digit = 0; while($digit<10 && $sum>0) { $sum = $sum - $digit; $result[] = array_merge([$digit], getCombinedSum($digits-1, $sum-$digit)); $digit++; } return $result; } var_dump(getCombinedSum(3, 4));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 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 InvalidArgumentException: Invalid numeric format in /in/UWSDo:7 Stack trace: #0 /in/UWSDo(22): getCombinedSum(1, -1) #1 /in/UWSDo(22): getCombinedSum(2, 1) #2 /in/UWSDo(29): getCombinedSum(3, 4) #3 {main} thrown in /in/UWSDo on line 7
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Fatal error: Uncaught exception 'InvalidArgumentException' with message 'Invalid numeric format' in /in/UWSDo:7 Stack trace: #0 /in/UWSDo(22): getCombinedSum(1, -1) #1 /in/UWSDo(22): getCombinedSum(2, 4) #2 /in/UWSDo(29): getCombinedSum(3, 4) #3 {main} thrown in /in/UWSDo on line 7
Process exited with code 255.
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/UWSDo on line 15
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/UWSDo on line 15
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_NEW in /in/UWSDo on line 7
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_NEW in /in/UWSDo on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/UWSDo on line 7
Process exited with code 255.
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