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<?php $records = [ "Coding", "Web development - Coding", "Meeting", "Coding", "Coding", "Content", "Coding", "Coding" ]; $quantities = [ 3, 8, 1, 4.85, 1, 0.5, 6.01, 7 ]; $result = []; foreach ($records as $index => $label){ $result[$label] = ($result[$label] ?? 0) + $quantities[$index]; } var_export(array_keys($result)); var_export(array_values($result));
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
array ( 0 => 'Coding', 1 => 'Web development - Coding', 2 => 'Meeting', 3 => 'Content', )array ( 0 => 21.86, 1 => 8, 2 => 1, 3 => 0.5, )
Output for 5.6.40
Parse error: syntax error, unexpected '?' in /in/MjcUu on line 26
Process exited with code 255.

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