PHP 7 is finally here, and to celebrate the release, we have created a video highlighting some interesting PHP 7 features. In this article we thought about why the release of PHP 5.6 is a big change for PHP and what it will commit from PHP 6.0. PHP7 is the latest version of the PHP engine, which was released in December 2016. As for support, I encourage you to switch to it, as it will be EOL on 31 December 2018, but can still be used until the end of 2018.
PHP 7 is based on the PHPNG engine (Zend Engine 3.0), which speeds up PHP applications. PHP 5 uses Z end II, but PHP 7 uses a brand new model of the engine, PHP NG, and it uses the same code base as PHP 6.6.
If you are not following PHP closely or are new to PHP programming, you will know that PHP 5.6 is the stable version. This means that you can replace it with a new version of PHP, even if it is a failed version, as long as it works.
Two years later comes PHP 7, the most promising version of PHP yet, and it is also one of the more promising versions of the PHP family.
Released in 2015, PHP 7 followed the success of PHP 5.6 and delivered a significant performance improvement over the previous version of the PHP family, PHP 4.0. In fact, it is estimated that PHP 7 offers more than twice the performance of PHP 6.1 and significantly better performance than PHP 3.5 and PHP 2.4. PHP7 has improved the performance of all PHP programs and in many cases has reached or even doubled the performance of applications in php5.x. In some cases even better than the original PHP and in other cases even more than PHP 1.8.
Benchmarks for PHP 7 consistently show significant performance improvements over the previous version of the PHP family, PHP 4.0.1.
Christian Vigh also released a PHP performance comparison, in which he found that PHP 5.2 is 400% slower than PHP 7. The webhost Kinsta has published performance benchmarks to compare the performance of the latest version of PHP and the previous version PHP 4.0.1.
These results clearly show that PHP 7 is a significant improvement over the older version of PHP, which allows the language to compete with powerful competitors such as HHVM. As an added benefit, it offers even faster performance than HH VM, since you do not need to use a virtual machine to run PHP source code.
This is a huge help, as both PHP 5 and PHP 7 are no longer supported since January 1st, 2019. Many PHP applications run on older versions of PHP to take full advantage of the advanced features it offers. Plugins and theme developers who want to take advantage of the fantastic features of PHP7 will have to spend a lot of time to ensure backward compatibility with older versions of PHP.
While upgrading your code from PHP 5 or 6 to PHP 7 requires careful checking for incompatibilities in the code and libraries that depend on it, the benefits of upgrading to PHP 7 make it very worthwhile. Keep an eye on PHP7.3 to ensure all your assets have been migrated
If you go to the deprecated functions section of PHP 7, you can check the list of functions that have been removed by discarding — functions and barking at them. Each PHP project has its own deleted features, removed features and removed API extensions, through which I will guide you, as well as the process of porting PHP 5 to PHP7 code.
The documentation explains in detail the technical advances that are emerging in PHP 7 for the first time and may be useful for developers programming in it. The next new feature I will discuss is the new bug, and it adds a new exception class based on the type of bug that can occur. This handling technique was implemented in php7, but is not available in the current version of PHP.
Another difference between PHP 5 and PHP 7 that benefits from the latter is the ability to declare a return type. The Type Hints argument, which allowed developers to force the type of parameters in the PHP 5.x series, also supports the invalid return types introduced with PHP 7.1. Another new scalar type introduced in PHP 6.0 adds support for return type declarations, while PHP 7 introduces a new scalar type, which allows developers to “enforce” the parameter type in a PHP5.X version.
The assertion function in PHP 7 is now a language construct, where the first parameter can also be an expression, instead of just a string or a boolean. This section would have given a parse error for PHP 5, but if a floating point value was passed, it would have caused a fatal error. The practice in php 7 finds exceptions that are thrown into the corresponding error class by implementing a throw, which is only valid in the current version of php 7.0.