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Output for 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.17, 8.4.1 - 8.4.5
array(1) { [0]=> &NULL } NULL array(1) { [0]=> &int(2) } int(2)

preferences:
62.46 ms | 411 KiB | 5 Q