PHP 8: What's New and Changed

What's new and changed in PHP 8.
- Major new changes in PHP 8
- New functions and classes
- OOP improvements
- Type system improvements
- Error handling improvements
- Resource to Object migration
- String related changes
- Removed functionality

https://php.watch/versions/8.0

Transcript

1. What’s New and Changed Ayesh Karunaratne | https://ayesh.me/talk/php8-dceu
2. What’s New and Changed https://ayesh.me/talk/php8-dceu
3. What’s New and Changed https://ayesh.me/talk/php8-dceu Major New Features New Functions and Classes OOP Improvements Type System Improvements Error Handling Improvements Resource to Object Migration String Related Changes Removed Functionality
4. https://ayesh.me/talk/php8-dceu What’s New and Changed
5. Ayesh Karunaratne
6. What’s New and Changed Major New Features New Functions and Classes OOP Improvements Type System Improvements Error Handling Improvements Resource to Object Migration String Related Changes Removed Functionality
7. Major New Features
8. Major New Features Named Params Named parameters in function/method calls in addition to traditional positional parameters.
9. Major New Features Named Params Named parameters in function/method calls in addition to traditional positional parameters.
10. Major New Features Named Params Named parameters in function/method calls in addition to traditional positional parameters.
11. Major New Features Named Params Named parameters in function/method calls in addition to traditional positional parameters. https://php.watch/versions/8.0/named-parameters
12. Major New Features Attributes Declare meta-data for functions, classes, properties, parameters, and constants
13. Major New Features Attributes Declare meta-data for functions, classes, properties, parameters, and constants
14. Major New Features Attributes Declare meta-data for functions, classes, properties, parameters, and constants
15. Major New Features Attributes Declare meta-data for functions, classes, properties, parameters, and constants
16. Major New Features Attributes Declare meta-data for functions, classes, properties, parameters, and constants
17. Major New Features Attributes Declare meta-data for functions, classes, properties, parameters, and constants
18. Major New Features https://php.watch/versions/8.0/attributes https://php.watch/articles/php-attributes Attributes Declare meta-data for functions, classes, properties, parameters, and constants
19. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether.
20. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether.
21. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether.
22. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether.
23. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether.
24. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether.
25. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether.
26. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether.
27. Major New Features Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether. https://php.watch/versions/8.0/JIT https://php.watch/articles/jit-in-depth
28. Major New Features Constructor Properties A new syntax to declare and assign class properties from the constructor
29. Major New Features Constructor Properties A new syntax to declare and assign class properties from the constructor
30. Major New Features Constructor Properties A new syntax to declare and assign class properties from the constructor
31. Major New Features Constructor Properties A new syntax to declare and assign class properties from the constructor
32. Major New Features Constructor Properties A new syntax to declare and assign class properties from the constructor
33. Major New Features Constructor Properties A new syntax to declare and assign class properties from the constructor https://php.watch/versions/8.0/constructor-property-promotion
34. Major New Features Union Types Dynamically declare a combination of types as a single type
35. Major New Features Union Types Dynamically declare a combination of types as a single type
36. Major New Features Union Types Dynamically declare a combination of types as a single type
37. Major New Features Union Types Dynamically declare a combination of types as a single type
38. Major New Features Union Types Dynamically declare a combination of types as a single type
39. Major New Features Union Types Dynamically declare a combination of types as a single type
40. Major New Features Union Types Dynamically declare a combination of types as a single type https://php.watch/versions/8.0/union-types
41. Major New Features Null-Safe Operator Optional chaining property access operator
42. Major New Features Null-Safe Operator Optional chaining property access operator
43. Major New Features Null-Safe Operator Optional chaining property access operator
44. Major New Features Null-Safe Operator Optional chaining property access operator Is null?
45. Major New Features Null-Safe Operator Optional chaining property access operator https://php.watch/versions/8.0/null-safe-operator
46. Major New Features Expressions block syntax with strict comparison and return value support
47. Major New Features Expressions block syntax with strict comparison and return value support
48. Major New Features Expressions block syntax with strict comparison and return value support
49. Major New Features Expressions block syntax with strict comparison and return value support
50. Major New Features Expressions block syntax with strict comparison and return value support
51. Major New Features Expressions block syntax with strict comparison and return value support
52. Major New Features Expressions block syntax with strict comparison and return value support Return Value Single-expression only, does not require Strict-type matching Exception if none matched
53. Major New Features Expressions block syntax with strict comparison and return value support https://php.watch/versions/8.0/match-expression
54. Major New Features WeakMaps Store data for objects without blocking the garbage collector
55. Major New Features WeakMaps Store data for objects without blocking the garbage collector
56. Major New Features WeakMaps Store data for objects without blocking the garbage collector https://php.watch/versions/8.0/weakmap https://php.watch/articles/practical-weakmap
57. Major New Features Named Params Named parameters in function/method calls in addition to traditional positional parameters. Attributes Declare meta-data for functions, classes, properties, parameters, and constants Just-In-Time (JIT) Compiler Compile and cache CPU machine code, and skipping PHP virtual machine altogether. Constructor Properties A new syntax to declare and assign class properties from the constructor Union Types Dynamically declare a combination of types as a single type Null-Safe Operator Optional chaining property access operator Expressions block syntax with strict comparison and return value support WeakMaps Store data for objects without blocking the garbage collector
58. New Functions and Classes
59. New Functions and Classes Determine if a string contains a given substring https://php.watch/versions/8.0/str_contains Checks if a string starts with a given substring https://php.watch/versions/8.0/str_starts_wit h-str_ends_with Checks if a string ends with a given substring https://php.watch/versions/8.0/str_starts_wit h-str_ends_with
60. New Functions and Classes Float division supporting IEEE-754 standard on Floating-Point Arithmetic. Returns the internal ID for a given PHP Returns the internal type of a passed variable Returns a human-friendly error message for the last preg operation. The new Stringable is automatically added to all classes that implement __toString method, and those explicitly declare that they implements Stringable. The new class provides a more fluent Object-Oriented interface as an alternative to the legacy array-based function.
61. OOP Improvements
62. OOP Improvements Liskov Substitution Principle Superclass shall be replaceable with objects of its subclasses without breaking the application
63. OOP Improvements Liskov Substitution Principle Is Enforced Strictly
64. OOP Improvements Liskov Substitution Principle Is Enforced Strictly
65. Liskov Substitution Principle Is Enforced Strictly All extending classes and interface implementations must follow LSP; Parameters can get wider, return types can get narrower, and property types should not change. https://php.watch/versions/8.0/lsp-errors , https://php.watch/articles/php-lsp Magic Methods must implement correct signature If magic methods declare types, they must be implement the expected signature. https://php.watch/versions/8.0/magic-method-signatures methods/properties are exempt from LSP Previously, changing static flag was not allowed on private methods and properties. It is not enforced in PHP 8. https://php.watch/versions/8.0/final-private-function OOP Improvements
66. Type System Improvements
67. Type System Improvements Union Types Dynamically declare a combination of types as a single type. https://php.watch/versions/8.0/union-types type Indicates a union type of all PHP types, excluding . https://php.watch/versions/8.0/mixed-type type declares an object of the called class will be returned. Only supported as a return type. https://php.watch/versions/8.0/static-return-type
68. Error Handling Improvements
69. Error Handling Improvements Internal Functions Error Handling Internal functions throw and exceptions, some of them upgraded from warnings
70. Error Handling Improvements Internal Functions Error Handling PHP < 8.0 Internal functions throw and exceptions, some of them upgraded from warnings https://php.watch/versions/8.0/internal-function-exceptions
71. Error Handling Improvements Internal Functions Error Handling Internal functions throw and exceptions, some of them upgraded from warnings https://php.watch/versions/8.0/internal-function-exceptions PHP < 8.0
72. Error Handling Improvements Internal Functions Error Handling Internal functions throw and exceptions, some of them upgraded from warnings https://php.watch/versions/8.0/internal-function-exceptions PHP < 8.0
73. Error Handling Improvements Default Error Reporting Changes Error reporting set to , startup errors are shown, the suppressor changes, and Assertion changes
74. Error Handling Improvements Default Error Reporting Changes Error reporting set to , startup errors are shown, the suppressor changes, and Assertion changes Default error reporting set to All errors are reported by default, from the previous option to not report deprecation notices. https://php.watch/versions/8.0/error-display-E_ALL Startup errors are shown by default Warnings related to missing extension files, problematic INI configurations, etc. are shown by default. https://php.watch/versions/8.0/startup-errors-enabled @ suppression operator does not silent fatal errors function calls will display the error message if a fatal error is thrown. https://php.watch/versions/8.0/fatal-error-suppression
75. Resource to Object Migration
76. Resource to Object Migration
77. Resource to Object Migration
78. Resource to Object Migration Curl Curl Curl GD Sockets Sockets OpenSSL OpenSSL OpenSSL XMLWriter XML Extension Resource Name (PHP < 8.0) Object name (PHP >= 8.0)
79. String Related Changes
80. String Related Changes An empty string in every string PHP considers every string contains empty strings between two characters PHP < 8.0
81. String Related Changes Numeric string changes Numeric string comparisons does not coerce non-numeric strings to numbers when comparing PHP < 8.0
82. Removed Functionality
83. Removed Functionality • create_function() function • each() function • __autoload() autoloader support • Curly brace array-access syntax • XMLRPC extension (moved to PECL) • string.strip_tags filter • money_format() function • get_magic_quotes_gpc() function • get_magic_quotes_runtime()
84. Further Resources • https://www.php.net/releases/8.0/en.php • https://php.watch/versions/8.0 • https://www.drupal.org/project/issues/search?issue_tags=PHP%208.0 • https://www.drupal.org/project/drupal/issues/3109885 • https://wiki.php.net/rfc • https://www.drupal.org/project/drupal/issues/3145797 • https://github.com/php/php-src/milestone/1 • https://github.com/php/php-src/milestone/3
85. Questions? @Ayeshlive ayesh@php.watch No question is too small. https://ayesh.me/talk/php8-dceu
86. Join us for contribution opportunities Friday, December 11, 2020 Mentored Contribution 9h00-18h00 CET First Time Contributor Workshop 10h00-12h00 CET General Contribution 9h00-18h00 CET #DrupalContributions
88. Thank You Dank u dankie faleminderit shukran Շնորհակալություն hvala благодаря gràcies M ̀ h’gōi děkuji tak tänan kiitos Благодаря ти danke ευχαριστώ mahalo . הדות dhanyavād köszönöm takk terima kasih grazie arigatô cảm ơn bạn paldies choukrane ačiū Благодарам grazzi Xièxiè Баярлалаа dziękuję obrigado mulţumesc спасибо xвала Ďakujem gracias tack nandri kop khun teşekkür ederim Дякую diolch a dank ngiyabonga ස්තුතියි
89. What’s New and Changed Ayesh Karunaratne | https://ayesh.me/talk/php8-dceu