What are the exceptions defined in php

The exceptions defined by php include basic exception class, error exception class, invalid parameter exception class, error method call exception class, runtime exception class, length exception class, out of range exception class, logical exception class, domain exception class classes, PDO exception classes, custom exception classes, etc. Detailed introduction: 1. Basic exception class, which is the base class of all exception classes and can be used to catch and handle all types of exceptions; 2. Error exception class, a special exception class used to catch and handle PHP errors; 3. Invalid parameter exception class, when the parameters passed to a function or method are invalid, it will be thrown, etc.

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

In PHP, exceptions are a mechanism for handling and reporting errors. PHP provides some built-in exception classes, as well as exception classes that allow developers to customize them. The following are some common exception classes in PHP:

Exception (basic exception class): It is the base class of all exception classes and can be used to catch and handle all types of exceptions.

ErrorException (error exception class): It is a special exception class used to capture and handle PHP errors. When a PHP error is triggered, it converts the error into an exception.

InvalidArgumentException (invalid parameter exception class): This exception class will be thrown when the parameters passed to the function or method are invalid.

BadMethodCallException (bad method call exception class): This exception class will be thrown when a non-existent method is called.

RuntimeException (runtime exception class): It is a general runtime exception class used to capture and handle runtime errors.

LengthException (length exception class): This exception class will be thrown when the length of the parameter passed to a function or method exceeds the valid range.

OutOfRangeException (out-of-range exception class): This exception class will be thrown when the parameters passed to a function or method exceed the valid range.

LogicException (logical exception class): It is a general logical exception class used to capture and handle logical errors.

DomainException (domain exception class): This exception class will be thrown when the parameters passed to a function or method do not conform to the expected domain.

PDOException (PDO exception class): used to capture and handle database-related exceptions.

In addition to these built-in exception classes, PHP also allows developers to customize exception classes to create more specific exception classes based on their own needs. Developers can create custom exception classes and add application-specific functionality and behavior by extending the Exception class. Custom exception classes can be used to catch and handle specific errors and exceptions in your application.

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