PHP：try-catch-finally 在循环中，在 catch 中继续

Posted 2023-02-25

【中文标题】PHP：try-catch-finally 在循环中，在 catch 中继续

【英文标题】：PHP: try-catch-finally in loop with continue in catch

【发布时间】：2020-02-25 09:20:58

【问题描述】：

好的，关于上面代码的技术问题：

foreach($x as $y) // or even a simple for()
    try
        a();
     catch(\Exception $e)
        // just skip current iteration
        continue;
     finally 
        c();
    

由于c() 在finally 块中，它应该总是被执行，但是continue 语句呢？ 根据documentation，它似乎正在跳过finally 块。

那么，c() 是否会在a() 抛出异常的情况下执行？

【参考方案1】：

使用控制台很容易发现。类型

php -r 'foreach([1, 2] as $n)try echo "\n", $n, "\n"; throw new \Exception(); catch (\Exception $e) continue; finally echo "finally has been called";'

这是代码的单字符串表示

foreach ([1, 2] as $n) 
    try 
        echo "\n", $n, "\n";
        throw new \Exception();
     catch (\Exception $e) 
        continue;
     finally 
        echo "finally has been called";
    

你会得到

1
finally has been called
2
finally has been called