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<?php $a = 4; $b = 3; var_dump(abs($b-$a) === 1); $a = 2; $b = 3; var_dump(abs($b-$a) === 1); $a = 1; $b = 3; var_dump(abs($b-$a) === 1);
Output for 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
bool(true) bool(true) bool(false)
preferences:
99.78 ms | 1599 KiB | 4 Q