php php检查2个变量是否等于另一个并且都等于0
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php check 2 variables if they are equal one to another and both equal to 0
提问by john
as the tile says, i have 2 variables that must be equal one to another and both equal to 0
正如瓷砖所说，我有 2 个变量，它们必须彼此相等，并且都等于 0
i tried a few things but none worked:
我尝试了几件事，但没有奏效：
if (($getstatuschk === $getstatuspost) && ($getstatuschk === "0") && ($getstatuspost === "0")){ echo "status is ok";}
else {echo "not ok!"}
if (($getstatuschk === $getstatuspost) and ($getstatuschk === "0") and ($getstatuspost === "0")){ echo "status is ok";}
else {echo "not ok!"}
i hope you can help me whit this...
我希望你能帮我这个...
thanks!
谢谢！
回答by s3nzoM
Code should be
代码应该是
if (($getstatuschk == $getstatuspost) && ($getstatuspost == 0)){
echo "status is ok";
}
else {echo "not ok!"}
You don't need to check if both variables are equal to zero since you already compared them and don't put zero in quotes since this makes it a string
您不需要检查两个变量是否都为零，因为您已经比较了它们并且不要将零放在引号中，因为这使它成为一个字符串
回答by rrr
If they must be equal to each other and both equal to zero then apply basic boole algebra:
如果它们必须彼此相等并且都为零，则应用基本布尔代数：
if ($getstatuschk === 0 and $getstatuspost === 0){ echo "status is ok";}
else {echo "not ok!"}
Remember that a triple equal (===) also checks for data type not just value, if the two variables are known to be an integer use ===, if you don't know its type just use == and then cast it to integer using (== 0), remind that empty strings are also casted to 0's when comparing with integer.
请记住，三重等号 (===) 还检查数据类型，而不仅仅是值，如果已知两个变量是整数，请使用 ===，如果您不知道其类型，请使用 == 然后将其强制转换to integer using (== 0)，提醒空字符串在与 integer 比较时也会被强制转换为 0。
回答by someoneHuman
The problem is that you are using quotes around your numbers. If you are using === then the things that you are comparing must be of the same type. So something like
问题是您在数字周围使用引号。如果您使用 ===，那么您要比较的东西必须是相同的类型。所以像
if (($getstatuschk === $getstatuspost) && ($getstatuschk === 0) && ($getstatuspost === 0)){ echo "status is ok";}
else {echo "not ok!"}
might be better.
可能会更好。
