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<?php $a = 4; $b = 1; $res1 = ($a and $b); $res2 = $a & $b; $res3 = ($a or $b); $res4 = $a | $b; var_dump($res1);//the res1 is 4,but the manual describes the result to be a bool type. var_dump($res2); var_dump($res3); var_dump($res4);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
bool(true) int(0) bool(true) int(5)

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