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<?php foreach ($data as $key => $row) { $volume[$key] = $row['volume']; $edition[$key] = $row['edition']; } print_r($volume); // Sort the data with volume descending, edition ascending // Add $data as the last parameter, to sort by the common key array_multisort($volume, SORT_DESC, $edition, SORT_ASC, $data); print_r($data);
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
Warning: Undefined variable $data in /in/7J95D on line 2 Warning: foreach() argument must be of type array|object, null given in /in/7J95D on line 2 Warning: Undefined variable $volume in /in/7J95D on line 6 Fatal error: Uncaught TypeError: array_multisort(): Argument #1 ($array) must be an array or a sort flag in /in/7J95D:9 Stack trace: #0 /in/7J95D(9): array_multisort(NULL, 3, NULL, 4, NULL) #1 {main} thrown in /in/7J95D on line 9
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, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: data in /in/7J95D on line 2 Warning: Invalid argument supplied for foreach() in /in/7J95D on line 2 Notice: Undefined variable: volume in /in/7J95D on line 6 Warning: array_multisort(): Argument #1 is expected to be an array or a sort flag in /in/7J95D on line 9
Output for 7.3.32 - 7.3.33, 7.4.26
Warning: Invalid argument supplied for foreach() in /in/7J95D on line 2 Warning: array_multisort(): Argument #1 is expected to be an array or a sort flag in /in/7J95D on line 9
Output for 5.0.4 - 5.0.5
Warning: Invalid argument supplied for foreach() in /in/7J95D on line 2 Notice: Undefined variable: volume in /in/7J95D on line 6 Notice: Undefined variable: volume in /in/7J95D on line 9 Notice: Undefined variable: edition in /in/7J95D on line 9 Warning: array_multisort(): Argument #1 is expected to be an array or a sort flag in /in/7J95D on line 9
Output for 4.3.2 - 4.3.10, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Warning: Invalid argument supplied for foreach() in /in/7J95D on line 2 Notice: Undefined variable: volume in /in/7J95D on line 6 Notice: Undefined variable: volume in /in/7J95D on line 9 Notice: Undefined variable: edition in /in/7J95D on line 9 Warning: array_multisort(): Argument #1 is expected to be an array or a sort flag in /in/7J95D on line 9
Output for 4.3.11
Notice: Undefined variable: volume in /in/7J95D on line 6 Notice: Undefined variable: volume in /in/7J95D on line 9 Notice: Undefined variable: edition in /in/7J95D on line 9 Warning: array_multisort(): Argument #1 is expected to be an array or a sort flag in /in/7J95D on line 9
Output for 4.3.0 - 4.3.1
Warning: Invalid argument supplied for foreach() in /in/7J95D on line 2 Notice: Undefined variable: volume in /in/7J95D on line 6 Notice: Undefined variable: volume in /in/7J95D on line 9 Notice: Undefined variable: edition in /in/7J95D on line 9 Warning: array_multisort() [http://www.php.net/function.array-multisort]: Argument #1 is expected to be an array or a sort flag in /in/7J95D on line 9
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