Question

我正在尝试在php 5中使用和OR语句，但它只是不起作用，这个脚本有什么问题。它假设发出错误，但事实并非如此。如果我删除“||”（我认为是OR语句）它会触发错误。

if($winner=="2" && $fteamscore>$steamscore){
$return['error'] = true;
$return['msg'] = 'Wrong Score, You said you LOST but you are reporting that you WON.';
}
if($winner=="3" && $fteamscore>$steamscore){
$return['error'] = true;
$return['msg'] = 'Wrong Score, You said you WON but your are reporting that your OPPONENT won.';
}
if($fteamscore<$steamscore && $winner=="3" || $winner=="2"){

Answer 1

也许你需要parens？

if( $fteamscore<$steamscore && ($winner=="3" || $winner=="2" ) ) {

这样，由于运算符优先级，在＆amp;＆amp; d之前评估parens中的表达式。

Answer 2

你的括号错了。试试这个：

($fteamscore<$steamscore) && ($winner=="3" || $winner=="2")

没有任何括号，首先评估“和”。你的表达相当于：

(($fteamscore<$steamscore && $winner=="3") || $winner=="2")

有关运算符优先级的更多信息：http://en.wikipedia.org/wiki/Logical_connective#Order_of_precedence

php 5 OR语句

2 个答案: