Why use exception handling over error handling?Įxception handling has the following advantages over error handling: This decision is made based on the nature of the exception. The exception handling function then proceeds to either resume with executing the saved code, begin executing from another location in the code or even end the program’s execution entirely.Execution of the code is handed over to an exception handling function that is usually predefined.Whenever an exception is triggered during program runtime, the following events occur: Occurrences when an exception is triggered This block can be used as a catch block and is always executed even if an exception is not handled.īelow is a diagrammatic representation of the flow of events during exception handling: This block contains the core of the code and is responsible for its execution. The finally block is used in PHP clean-up activity. The throw keyword cannot be used without a catch block. It also allows listing all the exceptions thrown by a particular function and cannot be handled. The throw keyword is used to throw exceptions in a PHP program. Instead, it works together with the try block. Whenever an exception is thrown in the try block of a PHP program, a code in the catch block is executed in an attempt to handle the exception. A try block is usually used together with one or many catch blocks in a program. The try block is usually used with the finally or the catch block. If the code has exceptions during runtime, the exception is caught and corrected in the catch block. This is the block where the code that is likely to have an exception is typed. The following keywords are used in handling exceptions in PHP: try These errors are commonly referred to as exceptions. When an error occurs, exception handling changes the flow of the program. A beginner’s understanding of programming in general.Įxception handling is the handling errors that occur during program runtime and are usually the same in all programs.A beginner’s understanding of PHP programing language.Why use exception handling over error handling?Ī reader should have prior knowledge of the following to follow along with this article:. ![]() Occurrences when an exception is triggered.However, unlike standard errors, exceptions can be handled by the program itself. Exceptions are basically like typical programming errors. Exceptions are disruptions of the normal flow of program execution due to unexpected outcomes from the program.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |