that can be used to check for certain conditions at runtime. These features can help you write more reliable and robust code. Other new features: PHP 8.1 also includes other new features such as support for named arguments, support for attributes (similar to annotations in other languages), and improved support for Unicode. The match expression is a new feature in PHP 8.1 that allows you to perform value matching in a more concise and flexible way. It is similar to a switch statement, but with some additional features and syntax improvements. Here is an example of how you can use the match expression in PHP:$value = 3; $result = match ($value) { 0 => 'The value is zero', 1, 2, 3 => 'The value is one, two, or three', default => 'The value is something else', }; echo $result; // Outputs: "The value is one, two, or three"In this example, the match expression compares the value of $value to the different cases specified in the curly braces. If $value matches one of the cases, the corresponding value is returned. If none of the cases match, the default case is used. One of the main benefits of the match expression is that it allows you to specify multiple values for a single case, as shown in the example above. This can help make your code more concise and easier to read. The match expression also allows you to specify a when clause for each case, which can be used to specify additional conditions that must be met for the case to be matched. For example:$value = 3; $result = match ($value) { 0 => 'The value is zero', 1, 2, 3 when $value > 1 => 'The value is two or three', default => 'The value is something else', }; echo $result; // Outputs: "The value is two or three"Overall, the match expression is a useful addition to PHP that can make it easier to write code that performs value matching and conditional processing. Assert() Error handling The assert() function and the throws keyword are new error-handling features in PHP 8.1 that can help you write more reliable and robust code. The assert() function is used to check for certain conditions at runtime. If the condition is not met, the function generates an AssertionError exception. For example:assert($x > 0, '$x must be greater than zero');In this example, the assert() function checks