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<?php function calculateMemoryUsage($largeArray, $operation = 'sort') { $startMemory = memory_get_peak_usage(); switch ($operation) { case 'sort': sort($largeArray); break; default: throw new InvalidArgumentException("Unsupported operation: $operation"); } $endMemory = memory_get_peak_usage(); return $endMemory - $startMemory; } $largeArray = range(1, 100000); try { $memoryDiff = calculateMemoryUsage($largeArray, 'sort'); echo "Memory usage difference after sorting: $memoryDiff bytes\n"; } catch (InvalidArgumentException $e) { echo "Error: " . $e->getMessage() . "\n"; } ?>