修复小数位不存在报错的情况

2019-03-07 11:19:02 +08:00 · 2019-03-07 11:19:02 +08:00 · 27356d1cdd
commit 27356d1cdd
parent 2c6b918020
1 changed files with 5 additions and 1 deletions
--- a/php/15_binary/binary.php
+++ b/php/15_binary/binary.php
@ -86,7 +86,11 @@ function squareRoot($number)
 function getDecimalPlaces($number)
 {
    $temp = explode('.', $number);
-    return strlen($temp[1]);
+    if (isset($temp[1])) {
+        return strlen($temp[1]);
+    }
+
+    return 0;
 }

 // 测试二分查找给定值