1.修复括号不匹配。2.除法也要优先于乘法运算

Author: SeasClouds

php/.gitignore

@@ -1,2 +1,4 @@
 .idea
 vendor
+*my*
+Queue

php/Stack/Compute.php renamed to php/08_stack/Compute.php

@@ -28,6 +28,13 @@ function expression($str)
  array_push($operStack, $arr[$i]);
  break;
  case '*':
+ $arrLen = count($operStack);
+ while ($operStack[$arrLen-1] === '/'){
+ compute($numStack, $operStack);
+ $arrLen--;
+ }
+ array_push($operStack, $arr[$i]);
+ break;
  case '/':
  case '(':
  array_push($operStack, $arr[$i]);
@@ -70,6 +77,9 @@ function compute(&$numStack, &$operStack){
  case '-':
  array_push($numStack, array_pop($numStack) - $num);
  break;
+ case '(':
+ throw new \Exception("不匹配的(", 2);
+ break;
 
  }
 }