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<?php $a = '9223372036854775807'; $b = '9223372036854775808'; if ($a == $b) { echo "$a == $b\n"; } else { echo "$a != $b\n"; } ?>
Output for 5.4.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
9223372036854775807 != 9223372036854775808
Output for 4.3.0 - 5.4.3
9223372036854775807 == 9223372036854775808