PHP is a server side scripting language which is designed for web development ,and was created by Rasmus Lerdorf in 1994. Since it was launched in 1994, PHP has become an industry standard supporting for almost 80% of the websites. With the release of PHP 7, which comes with several features and improved performance.

It has been upgraded in terms of following parameters:

1. Performance

The performance is a major difference between PHP 5 and PHP 7. Suppose you have written any PHP code, now if you run this code in both the versions, then you will get a big difference between them in terms of performance. You can see that the performance of PHP 7 is higher than PHP 5. Because, PHP 7 is powered by PHP-NG or Next Generation which improves its performance as twice. PHP 7 is a improved version of php.

2. Error Handling

We know that it is much more difficult to handle fatal errors in PHP 5 but with the release of PHP 7, it becomes easier because it replaced several major errors with the exceptions that can be handled effortlessly.

3. Declaring The Return Type

In PHP 5, it was a huge drawback that programmer was unable to define the return type of a function or method. But with the release of PHP 7, it allows the programmers to declare the return type of the functions or methods according to the expected return value that makes the code more accurate and robust.

4. New Operators

PHP 7 comes with a new operator that is called spaceship operator, that comes with the notation <=> but in technical terms, we can call it combined comparison or three-way comparison operator.

5. Anonymous Class

Other additions in PHP 7 is Anonymous Class that is used to speed up the execution time which is not present in PHP 5. It will be helpful when we don’t need to execute a class more than once.