expr logical and operator, dual of ||. Returns truth if both arguments are boolean true, and falsity otherwise. Note that this operator short-circuits, ...
2018年11月8日 — For example if someone has both perm1 and perm4, their total permissions will be 9. The reverse will use the proc above; i.e. we have the value ...
2012年6月29日 — In ($number == 1) number is assigned 1 and the comparison is made.Ex: 1==1 here output is Boolean. But in $number == 1 && $name == hello} $ ...