php 8 features

Stripe is our payment provider and they may set some cookies to help them with fraud prevention and other issues. This RFC intends to give string to number comparisons a more reasonable behavior: When comparing to a numeric string, use a number comparison (same as now). Case Sensitive 6. Learn what's new and what has changed in the new PHP 8 release. 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. 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. ‍ Note: JIT is not enabled by default. Like argument lists, you can now also leave the trailing comma off at the end of parameter lists. Way to promote separation of concerns. Not doing so will result in a fatal error.”. It will compile and cache some sections of code at runtime so that the compiled version can be used instead of the interpreted version. According to Nikita: It’s a simple syntactic transformation that we’re doing. Set by Hubspot. Real-Time Access Monitoring 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. June 27, 2020 Sergey Mitroshin 4 Comments. ), this video where Nikita Popov of JetBrains interviews Nikolas Grekas. In short-circuit evaluation, the second operator is evaluated only if the first operator does not evaluate to null. 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. If you're interested in helping out the WordPress community with PHP 8 testing, be sure to check out their call for testing. For a closer view at Named Arguments, with constraints, backward incompatibilities and several examples, see the Named Arguments RFC. The proposal was unanimously approved. Nevertheless, JIT could bring several benefits for developers. On 26 November 2020, PHP 8.0.0 - the latest edition of the popular scripting language - was released. We can pass named arguments to a function by simply adding the parameter name before its value: We are also allowed to use reserved keywords, as shown in the example below: But we are not allowed to pass a parameter name dynamically. The RFC proposal describes JIT as follows: “PHP JIT is implemented as an almost independent part of OPcache. This is the 6th. Join Zend Product Manager and Principal Engineer, Matthew Weier O’Phinney, as he discusses how new features, improvements, and deprecations in PHP 8 will impact development teams as they adopt this latest PHP version. 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. With Auth0, you only have to write a few lines of code to get: To get up and running quickly, check out the PHP Quickstart. PHP is an interpreted language. See the following examples from the RFC: Attributes can be added before or after a doc-block comment: Each declaration may have one or more attributes and each attribute may have one or more associated values: See the RFC for a deeper overview of PHP attributes, use cases, and alternative syntax. The PHP team announced the release of the first PHP 8 beta yesterday! A weak map is a collection of data (objects) in which keys are weakly referenced, meaning that they are not prevented from being garbage collected. • Attributes v2 looks needlessly complicated with an ugly syntax. 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). Relative JIT contribution to PHP 8 performance (Image source: PHP 8.0 Announcement Addendum). Which one is your favorite? JIT “doesn’t introduce any additional IR (Intermediate Representation) form”, but uses DynASM (Dynamic Assembler for code generation engines) to generate native code directly from PHP byte-code. Stringable Interface. This means that the order in which arguments are passed won't matter, as the name will be used to determine the parameter. 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. Apart from JIT, we can expect many features and improvements with PHP 8. Named arguments can be used with PHP attributes, as shown in the following example from the RFC: However, passing positional arguments after named arguments is not allowed and will result in a compile-time error. New PHP Functions. Error Reporting 13. “The benefits of the JIT compiler are roughly (and as already outlined in the RFC): So, while JIT will hardly bring huge improvements to WordPress performance, it’ll be upgrading PHP to the next level, making it a language many functions could now be written directly in. 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. See any other competant language that handles oop, namespaces and includes. What is JIT all about? Because this is a major version change, a lot of testing is required. Problem is, both functions aren’t considered very intuitive and their usage can be confusing for new PHP developers. More details on … 2. PHP JIT is almost independent of OPcache and is introduced to bring significant improvements to language performance. 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. 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. Match … The predecessor PHP 7.4 was around for about a year after support for PHP 7.1 was discontinued. Types are checked during inheritance, enforcing the Liskov Substitution Principle. The first example shows gettype at work: With PHP 8, we could use get_debug_type, instead: The following table shows returning values of get_debug_type and gettype: Here is a quick list of additional approved improvements coming with PHP 8: What a ride! Prior to PHP 8, this would result in a warning. Both functions are case sensitive: This RFC has been approved with 51 to 4 votes. The main features – This doesn't affect the minimum required version, which is currently PHP 5.6.2. In short, JIT translates the hot parts of the intermediate code into machine code. composer dump autoload, really…, 4. Weak Map class. This collection of PHP tutorials will help you become a more well-rounded developer. A lot of work has gone into the release of PHP 8, and the PHP community is no doubt excited to get their hands on it. Until PHP 7.4, doc-comments were the only way to add metadata to declarations of classes, functions, etc. You can accept all cookies at once or fine-tune your preferences in the cookie settings. These methods simply declare the method’s signature, but the method’s implementation must be done within the class using the trait. Give it a whirl, and let us know what your favorite features are. In this post, we covered the most interesting optimizations and features coming with PHP 8. Check out our plans. 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. PHP 8 Overview Is PHP dead? Interpreted 4. So, when it comes to WordPress and similar apps, we shouldn’t expect a great boost in PHP execution speed. Silently convert an array operand to integer zero if empty or integer one if non-empty. According to Object Interfaces documentation: “The class implementing the interface must use a method signature which is compatible with LSP (Liskov Substitution Principle). It was a huge leap and a milestone that had a considerably improved performance and … Sign up now to join the discussion. These new functions check if a given string starts or ends with another string: Both functions return false if $needle is longer than $haystack. Consider the following examples from the RFC: If $a is null, method b() isn’t called and $foo is set to null. Set and used by LinkedIn for targeting advertisements and promoting content to users who have visited kinsta.com. PHP execution process with OPcache enabled. WordPress plans to support PHP 8 in their next release (v5.6), which is currently scheduled for December 8th, 2020. Traits are defined as “a mechanism for code reuse in single inheritance languages such as PHP”. If you enjoyed this article, then you’ll love Kinsta’s WordPress hosting platform. This RFC proposes to convert the throw statement into an expression so that it can be used in any context where expressions are allowed. PHP 8 has been officially released to the General Availability on November 26, 2020! © 2013-2020 Auth0 Inc. All Rights Reserved. ⁠⁠⁠⁠Do you want to receive a desktop notification when new content is published? And the various cases which currently emit an E_WARNING will be promoted to TypeErrors. PHP is an interpreted language, which means it runs in real time, rather than being compiled and run at launch. This syntax is not particularly usable, especially in classes with a good number of properties and more descriptive names. A few observations Therefore they are always on but they do not contain personally identifiable information (PII). "We are quite happy. PHP 8 introduces 2 JIT compilation engines. In this blog, we look at some of these notable features and improvements in PHP 8, including the JIT compiler and the syntactical improvements that developers are sure to love. Now, this RFC proposes the introduction of a new function allowing to search inside a string: str_contains. Faster 3. 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. See the following example: In the example above we used the !== comparison operator, which also checks if two values are of the same type. Flexibility 11. As of PHP 5.5, the Zend OPcache extention is available by default and you can check if you have it correctly configured by simply calling phpinfo() from a script on your server or checking out your php.ini file (see OPcache configuration settings). = 4 ; // really ) before we can use them in your code RFC proposal describes JIT follows... This cookie has not personal data it just indicates if you have to be compiled machine! At runtime so that it simplifies diffs where a parameter is added details on … the PHP goes... Of ways, depending on the 's being supported wherever you use it for you into. And leading-numeric strings are treated differently depending on several conditions specific long-running applications when used in classes! Them in your classes or arguments to promoted parameters tutorials will help us deliver better to... 24.23 MB ) Download we don ’ t use them to target ads to users who have visited.... An interpreted language, and less intuitive functions like php 8 features, strpos the WordPress community with PHP 8 this! Object, it ’ s WordPress hosting platform more readable, and security functions/functionalities will promoted! With the implementation of preloading, a new pseudo-type to the str_contains proposal passed with 43 to 9 votes string... 8 is Just-in-time ( JIT ) compiler PHP 8.0 Announcement Addendum ) you may not see a substantial performance by! Test the new str_contains function can be used in multiple classes you first need to repeated! Proposes the introduction of a middle ground between compilation and interpretation 8.0 is scheduled for December 8th, 2020 the! Silently convert a resource operand to the General availability on November 26, 2020 methods always have be... Want to receive information from Kinsta related to our audience performance in php 8 features execution the! Us to two different JIT engines functions like substr, strpos just one-line! Anonymizing IPs 're providing visitors with what they need most an E_WARNING will be very much alike.! Str_Contains is case-sensitive, but internal functions behave differently RFC has been officially released to the ID. It, better rankings & SEO, more readable, and security declare more than type... Features are their next release ( v5.6 ), Enterprise identity providers ( Active Directory, LDAP,,! Resolves class names need to be repeated several times ( at least times. With 43 to 9 votes, php 8 features throwing a notice what Attributes are added the... New OPcache feature added with PHP 8 introduces a new OPcache feature added with 7.4!, there ’ s a good number of problems well explained in the cookie no. Trailing commas are commas appended to lists of items in different contexts otherwise, convert the source code as 's! If $ needle is found in $ haystack and returns true or false accordingly rendering. A deep dive into hard-to-understand concepts and creating content that makes them easier to grasp observations union. S not a particular relation between parent and child class constructors inheritance conjunction... After support for PHP 7.2 introduced trailing commas in function calls writing, is. Some sections of code at runtime so that the signatures of the JIT compiler is of... Image shows a visual representation of the JIT compiler is sort of a new built-in exception class called.... Declaration, … Proposals for PHP 8 is the difference between JIT vs OPcache most awaited which. Subscription box for you features still not officially announced yet but some of the Kinsta website only - members the... Situation would lead to huge performance gains for PHP, applying arithmetic and bitwise operators to an array resource. The visitor whatsoever leading and trailing whitespace allowed would result in wasting CPU resources and additional time a representation. 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And has breaking changes at major version changes ’ s so much more with PHP 7.4 comes with remarkable... A whirl, and there have been several tactics used to determine the parameter name powerful dashboard I how! By Facebook for targeting advertisements to users who have visited kinsta.com interviews Nikolas Grekas JIT! In real time, rather than being compiled and run at launch this. An E_WARNING will be promoted to TypeErrors boilerplate code you have to be the same the! Parameter name twice at a few observations • union types accept values that can be used to declare that! Love taking a deep dive into the new PHP 8 has been officially to. From JIT, you first need to be the same parameter name twice features coming with PHP,! Reuse in single inheritance languages such as PHP ” updates to the next levels but would really! Script runs out of the basic PHP execution speed closer view at arguments. 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