New Features in PHP 8. Read more about backward incompatibilities in the RFC. We are still about four months from the v8.0.0, but you can start preparing for PHP 8 by learning about the new features, the upgrade path, and key dates to make sure you’re ready. Not doing so will result in a fatal error.”. The following functions/functionalities will be deprecated with PHP 7.4. Previous known major release of PHP was 7.0.0. This is a roundup of all the features that I’ve covered previously on this blog under a single article. The syntax is a lot less boilerplate-y than phpdoc.”, Throw Error exception on array operand. Check out our plans. With OPcache enabled, the PHP interpreter goes through the 4 stage process mentioned above only the first time the script runs. This cookie has not personal data it just indicates if you have signed up. The RFC provides two useful examples to better understand the difference between the new get_debug_type() function and gettype(). Platform Independent 9. Anyway, the behavior was sometimes inconsistent. In my free time you can usually find me reading, hanging out with my dogs, or curling in the squat rack. Slightly better performance for “typical” PHP web application code. You can read more about preloading in our introduction to PHP 7.4. => for = or make an object an jso object x:3, y:4 etc, 5. Besides breaking changes, PHP 8 also brings a nice set of new features such as the JIT compiler, union types, attributes, and more. Scout APM is PHP application performance monitoring designed for developers. The long-anticipated GA release of PHP 8.0 is scheduled for November 26th, 2020. These new functions check if a given string starts or ends with another string: Both functions return false if $needle is longer than $haystack. © 2013-2020 Auth0 Inc. All Rights Reserved. This proposal only relates to promoted parameters, i.e. The PHP development team announces the immediate availability of PHP 8.0.0. Make sure to bookmark this blog post for your future reference. Set and used by Google Ads for remarketing, personalization, and targeting advertisements to users who have visited kinsta.com. PHP 8.0 comes with numerous improvements and new features such as: Union Types. Used by Facebook for targeting advertisements and promoting content to users who have visited kinsta.com. Convert an object operand to integer one, while throwing a notice. And what changes in the execution process with JIT? According to Dmitry Stogov: “JIT is extremely simple, but anyway it increases the level of the whole PHP complexity, risk of new kind of bugs and cost of development and maintenance.”. Stay tuned for the next installment. According to Nikita: Usually, we say that methods always have to be compatible with the parent method. We'll start with a list of all new features, and then look at changes and deprecations.A note before we dive in though: if you're still on a lower version of PHP,you'll also want to read what's new in PHP 7.3. Set and used by Reddit for targeting advertisements and promoting content to users who have visited kinsta.com. The following example from the RFC makes it clear: If you are a WordPress developer, please note that at the time of this writing, named arguments may lead to backward compatibility issues. Set and used by G2 for targeting advertisements and promoting content to users who have visited kinsta.com. PHP is an interpreted language. Because this is a major version change, a lot of testing is required. Most of these new features look like syntactic sugar. See the following example from the RFC: With PHP 8, the code above would produce the following result (see the code in action here): If you unset the object, the key is automatically removed from the weak map: For a closer look at Weak maps, see the RFC. Union types accept values that can be of different types. PHP is an interpreted language, and there have been several tactics used to improve PHP performance in the past. Do you want to receive a desktop notification when new content is published? The JIT compiler comes with significant improvements with not always within the web request context. With named arguments, you can now pass an argument to a function based on the parameter name. In short-circuit evaluation, the second operator is evaluated only if the first operator does not evaluate to null. This is not a place to discuss features which may be accepted in the 7.X series; it is for features which require backwards compatibility breaks to achieve. It will compile and cache some sections of code at runtime so that the compiled version can be used instead of the interpreted version. If you've set preferences (which cookies you accept and which you don't) we store your preferences here to make sure we don't load anything that you didn't agree to. "We are quite happy. In previous PHP versions, when making a non-strict comparison between strings and numbers, PHP first casts the string to a number, then performs the comparison between integers or floats. Analytics help us deliver better content to our audience. Support for PHP 7.2 will also end at the end of 2020. The RFC proposal describes JIT as follows: “PHP JIT is implemented as an almost independent part of OPcache. The same happens when passing the same parameter name twice. PHP 8 Overview But that reduces the amount of boilerplate code you have to write for value objects in particular…. str_contains. PHP 8 is pretty easy to support." This is the 6th. Now it’s your turn: are you ready to test the new PHP features? It is not enforced in the most common case, where the method implementation is provided by the using class: It is enforced if the implementation comes from a parent class: It is enforced if the implementation comes from a child class: Types are actually enforced, so mistakes can be caught early. I’ve said 5 useful PHP 8 features, but this one might be the most useful addition to PHP 8 as it is another performance upgrade since PHP 7. Problem is, both functions aren’t considered very intuitive and their usage can be confusing for new PHP developers. The match expression introduced in PHP 8 is similar to the switch statement, but with a few improvements: Note: match is now a reserved keyword. PHP 8 brings several new functions to the language: Before PHP 8, strstr and strpos were the typical options for developers to search for a needle inside a given string. Want to understand how PHP works under the hood, and how PHP 8 can make your code faster in just the nick of time? Auth0. This could lead to huge performance gains for PHP, but with some caveats. Need a blazing-fast, secure, and developer-friendly hosting for your sites? Relative JIT contribution to PHP 8 performance (Image source: PHP 8.0 Announcement Addendum). You can try out pre-release copies of PHP 8.0 today on Platform.sh, with just a one-line change. Set and used by Google. For an in-depht overview of object ergonomics in PHP, see this post and the following interview with Larry Garfield. The two are JIT compilations are Tracing JIT and Function JIT. int $myNumber = 4; // really? WordPress sets a couple of cookies that track logged in users and store user preferences set in their WordPress user profile. Attributes, also known as annotations, are a form of structured metadata that can be used to specify properties for objects, elements, or files. Silently convert an array operand to integer zero if empty or integer one if non-empty. We have made sure no personally identifiable information (PII) is sent by anonymizing IPs. Generally, JIT compilers mostly benefit CPU-intensive applications, such as 3D rendering or large mathematical computations. WordPress. If you're interested in helping out the WordPress community with PHP 8 testing, be sure to check out their call for testing. As a result of an ongoing discussion about how to improve object ergonomics in PHP, the Constructor Property Promotion RFC proposes a new and more concise syntax that will simplify the property declaration, making it shorter and less redundant. The Laravel team completed all updates needed for PHP 8 support well ahead of time. That’s a good improvement for the language, as gettype() is not useful for type checking. In addition to the str_contains function, two new functions allow to search for a needle inside a given string: str_starts_with and str_ends_with. In this RFC, Nikita Popov shows how unreasonable that behavior could be with a simple example: Nikita explains how applying an arithmetic or bitwise operator to arrays, resources, or non-overloaded objects led to different results: With PHP 8 things change and the behavior is the same for all arithmetic and bitwise operators: Throw a TypeError exception for array, resource and object operands. The JIT compiler is sort of a middle ground between compilation and interpretation. Way to promote separation of concerns. Real-Time Access Monitoring Stringable interface. Is your WordPress site slow? JIT brings compiled code to PHP, and with it, better performance — in some situations. We mainly use them to target ads to users who have visited Kinsta. Match … If a class is implementing an interface, incompatible method signatures throw a fatal error. So, thanks to str_contains, we can write the following code: Which is more readable and less prone to errors (see this code in action here). The str_contains proposal passed with 43 to 9 votes. New PHP Functions. Previously, when we used a type that wasn’t explicitly nullable, but with a null default value, the type was implicitly nullable. A trait can also contain abstract methods. And, there is one thing users want to see in PHP 8 is to have more real-time features. Check out our plans. Our Google Cloud powered infrastructure focuses on auto-scaling, performance, and security. And the various cases which currently emit an E_WARNING will be promoted to TypeErrors. a hierarchical representation of the structure of source code, How to Improve PHP Memory Limit in WordPress. (Excluding + if both operands are array.). User-defined functions throw a TypeError, but internal functions behave in a variety of ways, depending on several conditions. It extends \Exception and PHP throws this exception, every time you pass a value to a function, which has a valid type - but can not be used for the operation. PHP 8 Support. PHP 8 introduces us to two different JIT engines. Because PHP 8 has been on the horizon for so long, a lot of community work has already been done to make sure that it's supported across the web. These cookies are needed for our website to function providing payment gateway security and other essentials. For the love of god it’s time to move away from $ In this post, we try to answer that question by taking a look at some of the data on PHP usage statistics. This situation would lead to a number of problems well explained in the RFC’s issues section. It’s a new major version release of PHP, which means that it will introduce some breaking changes, as well as lots of new features and performance improvements. This pseudo-type allows you to declare a value of any type without excluding type information altogether. Weak Map class. Interpreted 4. Therefore they are always on but they do not contain personally identifiable information (PII). This means that we are not forced to pass arguments to a function in the same order as the function signature: It’s also possible to combine named arguments with positional arguments: Another great advantage of named arguments is that they allow to specify only those arguments we want actually change and we don’t have to specify default arguments if we don’t want to overwrite default values. See the following code from the RFC: In PHP 7.4, the code above would simply throw a warning: Now, this RFC proposes to always throw a fatal error for incompatible method signatures. Turbocharge your website and get 24/7 support from our veteran WordPress team. Instead of two lines changing (adding a comma to the last parameter and the line with the new parameter), only one line would be highlighted. Any other type of string is non-numeric and will throw TypeErrors when used in a numeric context. For a more … Check out our deep dive into PHP 8! This syntax is not particularly usable, especially in classes with a good number of properties and more descriptive names. OPcache has been recently improved with the implementation of preloading, a new OPcache feature added with PHP 7.4. This release marks the latest major release of the PHP language. When passing a parameter of illegal type, internal and user-defined functions behave differently. Until PHP 7.4, doc-comments were the only way to add metadata to declarations of classes, functions, etc. LOL. The property declaration is transformed as we’d explicitly declared those properties and we can use the Reflection API to introspect property definitions before the execution (see Desugaring): Reflection (and other introspection mechanisms) will observe the state after desugaring. Deprecations. If you're curious about the process of supporting PHP 8 in Symfony, be sure to check out this video where Nikita Popov of JetBrains interviews Nikolas Grekas, Symfony's principal engineer. PHP 8 introduces 2 JIT compilation engines. Named arguments provide a new way of passing arguments to a function in PHP: Named arguments allow passing arguments to a function based on the parameter name, rather than the parameter position. Probably the biggest and most exciting addition of PHP 8 is the JIT compiler. Here are some examples: Since PHP bytecodes are stored in shared memory, they are immediately available as low-level intermediate representation and can be executed on the Zend VM right away. Throw an Error exception for array, resource and object operands. Attend This … Promoted properties are allowed in non-abstract constructors and traits, but there are several limitations worth mentioning here. It allows us to A/B test our content to make sure we're providing visitors with what they need most. The proposal was unanimously approved. Even if this behavior is quite useful in several scenarios, it may produce wrong results that may also lead to bugs and/or security issues. Which one is your favorite? The main features – The predecessor PHP 7.4 was around for about a year after support for PHP 7.1 was discontinued. This new major update brings a whole bunch of optimizations and powerful features to the language and we are excited to drive you through the most interesting changes that will allow us to write better code and build more powerful applications. Significantly better performance for numerical code. But would we really experience such improvements in real-life apps like WordPress? Kinsta is built with WordPress developers in mind and provides plenty of tools and a powerful dashboard. Set and used by Twitter for targeting advertisements and promoting content to users who have visited kinsta.com. It may be enabled/disabled at PHP compile time and at run-time. Before version 8, PHP already supported two special union types: nullable and iterable. Stop being affraid of introducing breaking changes at major version changes. When enabled, native code of PHP files is stored in an additional region of the OPcache shared memory and op_array→opcodes[].handler(s) keep pointers to the entry points of JIT-ed code.”. The PHP team announced the release of the first PHP 8 beta yesterday! At the time of this writing, str_contains is case-sensitive, but this could change in the future. Stripe is our payment provider and they may set some cookies to help them with fraud prevention and other issues. New Classes, Interfaces, and Functions. Coming to PHP 8, the expectations of its users' have skyrocketed already. PHP is an interpreted language, which means it runs in real time, rather than being compiled and run at launch. Problem is, both ... str_starts_with () and str_ends_with () get_debug_type. The following table compares the behavior of string to number comparison earlier PHP versions and in PHP 8: Read more about the many implications of this change and how string to number comparisons change in PHP 8 in the official RFC from Nikita Popov. ), Enterprise identity providers (Active Directory, LDAP, SAML, etc. With tracing logic that ties issues back to the line of code causing them, you can pinpoint n+1 queries, memory leaks, and other abnormalities in real time so you can knock them out and get back to building a great product. The most acclaimed feature coming with PHP 8 is the Just-in-time (JIT) compiler. This collection of PHP tutorials will help you become a more well-rounded developer. […] Use the === operator for testing the return value of this function.”. Kinsta® and WordPress® are registered trademarks. Consider the following example from the RFC: According to Nikita Popov, the author of the RFC, we have to write the property name at least four times in three different places: the property declaration, the constructor parameters, and the property assignment. Thanks to them, we could now avoid using sub-optimal and less intuitive functions like substr, strpos. The new function works in quite a similar way as the gettype function, but get_debug_type returns native type names and resolves class names. Types are checked during inheritance, enforcing the Liskov Substitution Principle. But before you upgrade, you should make sure it's being supported wherever you use it. In such scenarios, the type error is detected and results in a TypeError. We don’t have any limitations in using inheritance in conjunction with promoted parameters. The new match expression is pretty similar to switch but with safer semantics and allowing to return values. Among the PHP 8.0 highlights are: - PHP8 introduces the much anticipated Just In Time (JIT) compiler for further enhancing the speed of PHP scripts. composer dump autoload, really…, 4. The early tests show that JIT would make CPU-intensive workloads run significantly faster, however, the RFC warns: “… like the previous attempts – it currently doesn’t seem to significantly improve real-life apps like WordPress (with opcache.jit=1235 326 req/sec vs 315 req/sec). The Symfony team is ready to support PHP 8 right out of the gate. PHP 8.0 features still not officially announced yet but some of assumption feedback on its benchmark will be writing. Only with both leading and trailing whitespace allowed, strings containing numbers fall three! That the signatures of the most interesting optimizations and features coming to PHP 8 introduces us A/B. Plans to support PHP 8 introduces us to two different JIT engines,. Better understand the difference between the new additions in PHP 8 in their next release ( v5.6,. Could bring several benefits for developers me reading, hanging out with my dogs, or in... Are another new addition to the normal three-year cycle for PHP 7.1 discontinued. A needle inside a given string contains another string new addition to following! Reduces the amount of boilerplate code you have signed up in helping out the community! 8 is Just-in-time ( JIT php 8 features compilation our users ’ needs and to optimize kinsta.com interpreter goes the... A more well-rounded developer like argument lists, you may unsubscribe at any time on the operation performed ads... Str_Contains proposal passed with 43 to 9 votes operator does not apply for the day when PHP will now sufficiently. 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Covered the most awaited of which is much slower JIT vs OPcache such... Contains another string the intermediate code into machine code below from the RFC proposal describes JIT as follows: PHP. A good improvement for the day when PHP will have typed arrays changes at major changes. To allow us to better assist visitors to kinsta.com who contact us if an operator in fatal! To users who have visited kinsta.com provider and they may set some cookies to help them with fraud and. Great boost in PHP, because PHP will have typed arrays code in. At major version and has breaking changes from previous versions.New features and improvements with 8... Php is an interpreted language, and developer-friendly hosting for your sites a single.. Is implemented as an almost independent of OPcache === operator for testing promising features with... Classes or arguments following functions/functionalities will be used in multiple classes in our introduction to PHP.! Make PHP more reliable and efficient ve covered previously on this blog under a single concept Numeric. Us know what your favorite features are apply for the constructor and the other is function JIT into code... To target ads to users who have visited kinsta.com, while throwing a notice analytics help us more... In single inheritance languages such as PHP ” functions allow to search for a closer at! ’ d be able to bring even more power and speed allowing for even better results that question by a! Your future reference describes JIT as follows: “ PHP JIT is implemented as almost...
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