![Output: Array([0]=>1[1]=>2)
PHP 5.x](https://image.slidesharecdn.com/typeddrupal-final-170511123418/85/Typed-Drupal-A-great-combination-of-Drupal-8-and-PHP-7-19-320.jpg)
Typed Drupal - A great combination of Drupal 8 and PHP 7
- 2. JoinusforSprints First-Time Sprinter Workshop - 9am-12pm in Room 271-273 Mentored Core Sprint - 9am-6pm in Room 275-277 General Sprints - 9am-6pm in Room 278-282 Friday, May 13 at the Convention Center
- 5. Agenda ✤ Typing as a concept ✤ Categories of Type Systems ✤ Type Hinting in PHP ✤ Non Scalar Type Hinting ✤ Type Juggling.
- 6. Agenda ✤ Scalar Type Hinting in PHP7 ✤ Return Type Declarations in PHP7 ✤ Type Checking Modes ✤ Handling Type Exceptions ✤ D8 and PHP7
- 8. Typingasaconcept Giving data types to ❖ Variable Declarations ❖ Parameters of a function ❖ Return value of a function ❖ Expressions
- 10. TypeSystems- Categories ✤ Strong (Java, Python) ✤ Weak (PHP, Perl) ✤ Static (C#, Java) ✤ Dynamic (PHP, Python)
- 11. Categories(TypeSystems) Strongly Typed language Strongly typed language is more likely to generate an error or refuse to compile if type checking fails. A Weakly typed language may produce unpredictable results or may perform implicit type conversion in case of type conflict. Weakly Typed Language
- 12. Typing-Categories Statically Typed language A statically typed language checks the type system at compile time. A dynamically typed language interprets the type of a variable at runtime Dynamically Typed Language
- 14. TypeHintinginPHP
- 15. TypeHintinginPHP Type Hinting allows you to specify the type of data which a method is expecting.
- 16. Parameter type which the method is expecting PHP 5.x
- 18. NonScalarTypeHinting Type hinting for complex data types. Objects (Since PHP 5.0), Array (Since PHP 5.1), Callable (Since PHP 5.4)
- 20. PHPCatchable fatalerror: Argument1passedto adi_function()mustbeaninstanceofint,integergiven PHP 5.x
- 21. TypeJuggling
- 22. TypeJuggling Type Juggling is a feature (or design flaw, according to where you stand on typing) where we convert a variable type to the most appropriate type according to the action performed. It can lead to an unexpected output.
- 26. EnterPHP7!
- 28. ScalarTypeHintinginPHP7 RFC introduced last year: https://wiki.php.net/rfc/scalar_type_hints_v5 Extends type hints for scalar types. Scalar Types – integer, float, string and boolean
- 29. Output: 1 PHP 7
- 30. PHPCatchable fatalerror: Argument1passedto adi_function()mustbeaninstanceofint,integergiven PHP 5.x
- 31. Output: UncaughtTypeError:Argument1passedto adi_function()mustbeofthetypeinteger,stringgiven PHP 7
- 34. Benefits: ✤ Less Bugs (Especially the ones which are Hard to debug) ✤ Code Readability ✤ Concrete function definition.
- 36. ReturnTypeDeclarations In PHP7, we could specify the data type of the return value of a function. This is great! Adding Return Type Declarations facilitates a nice contract where the caller is sure that the called function would return a value with type as promised
- 39. ReturnTypeDeclarationfeatures: ✤ Contract between caller and callable function. ✤ No error handling required in the caller function. ✤ Function definitions are more readable.
- 40. AndFinally!!
- 43. WeakMode Weak Mode checks the parameter types and return types in a weak fashion for a file. It will perform Type juggling for matching the type of the parameter to the passed value.
- 44. Output: 1 PHP 7
- 45. Output: UncaughtTypeError:Argument1passedto adi_function()mustbeofthetypeinteger,stringgiven PHP 7
- 46. StrictMode Strict Mode checks the parameter types and return types in a strict fashion for a file.
- 47. Output: UncaughtTypeError:Argument1passedto adi_function()mustbeofthetypeinteger,stringgiven PHP 7
- 48. Output: 1 PHP 7
- 49. Importantpointstonote: ✤ Return Type Declarations are optional, even in the strict mode. ✤ The only type conversion allowed is int to float, i:e Float parameter type can accept a integer value. ✤ NULL is still allowed as a default value for a function parameter.
- 50. Output: 10 PHP 7
- 54. “Hey, What about Drupal? Isn’t this Drupalcon? ” ~ Abraham Lincoln
- 56. Drupal8andPHP7 Drupal 8 has a 100% pass on PHP7. https://www.drupal.org/node/3060/qa
- 60. SoHowWasIt?-TellUsWhatYouThink Evaluate this session - https://events.drupal.org/neworleans2016/schedule/2016-05-10 AdityaGhan–[email protected]