What is the execution order of try catch finally

The execution sequence of try catch finally is: 1. Execute the code in the try block; 2. If the code in the try block does not throw an exception, continue to execute the code after the try block; 3. If the code in the try block The code throws an exception and jumps to the catch block that matches the thrown exception; 4. The catch block handles the exception thrown in the try block; 5. Regardless of whether an exception is caught, the code in the finally block will be executed; 6. , continue executing the code after the finally block.

The operating environment of this article: Windows 10 system, PHP8.1.3 version, Dell G3 computer.

The execution sequence of try catch finally is:

1. The program will execute the code in the try block. The try block may contain one or more statements that may throw exceptions.

2. If the code in the try block does not throw an exception, the catch block will be skipped and the program will continue to execute the code after the try block.

3. If the code in the try block throws an exception, the program will immediately stop executing the code in the try block and jump to the catch block that matches the thrown exception.

4. The catch block will handle the exception thrown in the try block. The code in the catch block will be processed according to the exception type. You can choose to catch and handle the exception, or you can choose to continue throwing the exception to the upper layer.

5. After the catch block is executed, regardless of whether an exception is caught, the program will execute the code in the finally block. The code in the finally block will always be executed regardless of whether an exception is thrown or caught. It is usually used to release resources or perform some necessary cleanup work.

6. The program will continue to execute the code after the finally block.

Summary

The execution sequence of try catch finally is: the code in the try block -> If an exception is thrown, jump to the catch block to handle the exception -> Code in finally block -> Continue executing the code after try catch finally. Regardless of whether an exception is thrown or caught, the code in the finally block will always be executed.

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