PHP - 遇到的Bug - 总结

BUG记录1
[问题] 除数为0，不符合规则
[问题描述]

// 报错信息
DivisionByZeroError：is thrown when an attempt is made to divide a number by zero.

// example
public class Example
{
   public static void Main()
   {
      int number1 = 3000;
      int number2 = 0;
      try {
         Console.WriteLine(number1 / number2);
      }
      catch (DivideByZeroException) {
         Console.WriteLine("Division of {0} by zero.", number1);
      }
   }
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

[解决方法] 运行前判断 如果除数为0，则不要计算
[链接]

• 讲解1
• 讲解2

---

BUG记录2
[问题] 参数不符合
[问题描述]

参数要求是数组,实际却是字符串
implode(): Argument #1 ($pieces) must be of type array, string given in implode()

// 出错前代码
$variables['classes'] = implode(' ', $variables['classes_array']);

// 修改方法
if(is_array($variables['classes_array']))
{
$variables['classes'] = implode(' ', $variables['classes_array']);
}
else if (is_string($variables['classes_array']))
{
$variables['classes'] = implode(' ', (array)$variables['classes_array']);
// 等价于
$variables['classes'] = explode(' ', $variables['classes_array']);
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

[解决方法] 运行前判断参数类型
[链接] 讲解

---