• 例外情况

    例外情况

    Zephir以非常低的级别实现异常，为PHP提供类似的行为和功能。

    抛出异常时，可以使用 catch 块来捕获异常并允许开发人员提供正确的处理：

    可以在try语句中抛出异常。 和PHP一样，在catch中捕获异常并处理

    1. var e;
    2. try {
    4.     throw new \Exception("This is an exception");
    6. } catch \Exception, e {
    8.     echo e->getMessage();
    9. }

    Zephir 还提供了一个“安静”try语句，用来忽略产生的任何异常：

    1. try {
    2.     throw new \Exception("This is an exception");
    3. }

    如果在<0>catch</0>中不处理异常，可以不提供异常变量：

    1. try {
    3.     throw new \Exception("This is an exception");
    5. } catch \Exception {
    7.     echo "An exception occur!";
    8. }

    在catch中捕获多个异常：

    1. var e;
    2. try {
    4.     throw new \Exception("This is an exception");
    6. } catch \RuntimeException|\Exception, e {
    8.     echo e->getMessage();
    9. }

    Zephir允许您抛出文字或静态类型变量，就像它们是异常的消息一样：

    1. // throw new \Exception("Test");
    2. throw "Test";
    4. // throw new \Exception((string) 't');
    5. throw 't';
    7. // throw new \Exception((string) 123);
    8. throw 123;
    10. // throw new \Exception((string) 123.123);
    11. throw 123.123;
    12. ```zephir
    14. Zephir's exceptions provide the same methods to know where the exception happened that PHP's exceptions do. That is, `Exception::getFile()` and `Exception::getLine()` return the location in the Zephir code where the exception was thrown:
    16. ```bash
    17.     Exception: The static method 'someMethod' does not exist on model 'Robots'
    18.     File=phalcon/mvc/model.zep Line=4042
    19.     #0 /home/scott/test.php(64): Phalcon\Mvc\Model::__callStatic('someMethod', Array)
    20.     #1 /home/scott/test.php(64): Robots::someMethod()
    21.     #2 {main}