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<?php var_dump(unpack('C*', 2241574459));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(10) { [1]=> int(50) [2]=> int(50) [3]=> int(52) [4]=> int(49) [5]=> int(53) [6]=> int(55) [7]=> int(52) [8]=> int(52) [9]=> int(53) [10]=> int(57) }