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<?php list($rate, $rate_sum) = [1,2]; list($rate_summary['count'], $rate_summary['average']) = [1,2]; var_dump($rate, $rate_sum,$rate_summary);
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
int(1) int(2) array(2) { ["count"]=> int(1) ["average"]=> int(2) }
Output for 5.6.0 - 5.6.40
int(1) int(2) array(2) { ["average"]=> int(2) ["count"]=> int(1) }

preferences:
109.99 ms | 1944 KiB | 4 Q