PHP7 - Not for kids

Talk do Marcos Felipe

Transcript

1. PHP 7 Not for kids
2. */omarkdev
3. “ Performance
8. “ Mudanças para o usuário
9. Tags
10. Static calls to non-static methods
11. PHP 4 style constructors
12. Removed Extensions and SAPIs Extensions: ereg, mssql, mysql, sybase_ct. Servers APIs: aolserver, apache, apache_hooks, apache2filter, caudium, continuity, isapi, milter, nsapi, phttpd, pi3web, roxen, thttpd, tux, webjames.
14. Null coalesce operator
15. Null coalesce operator
16. Spaceship operator
17. Spaceship operator
18. Spaceship operator
19. Nullable types
20. “ Errors and exceptions ╺ Any fatal error can be catch; ╺ E_STRICT notices have been reclassified to E_WARN and E_NOTICE; ╺ Fatal errors are or inherit the class "Error"; ╺ Syntax parsing errors generate "ParseError"; ╺ "Error" and "Exception" implement interface "Throwable".
21. “ Errors and exceptions
22. “ Errors and exceptions
23. “ Scalar type hints ╺ Weak mode; ╺ Strict mode.
24. “ Scalar type hints
25. “ Scalar type hints * Only non-NaN floats between PHP_INT_MIN and PHP_INT_MAX accepted. † Non-numeric strings not accepted. Numeric strings with trailing characters are accepted, but produce a notice. ‡ Only if it has a __toString method.
26. “ Argon2 password hash
27. “ libsodium
28. “ Mudanças internas
29. “ 64-bit support ╺ Strings greater than 2³¹; ╺ Large file support (LFS); ╺ 64-bit integer support.
30. “ AST PHP 5 PHP 7 PHP Parser Opcodes Execution PHP Parser AST Opcodes Execution
31. “ Hashtable [0]: empty [1]: empty [2]: empty [3]: empty “foo” hash Credits: Nikita Popov
32. “ Hashtable [0]: empty [1]: [2]: empty [3]: empty “foo” hash data key: “foo” zval Credits: Nikita Popov
33. “ Hashtable [0]: empty [1]: [2]: empty [3]: empty “foo” hash data key: “foo” zval “bar” Credits: Nikita Popov
34. “ Hashtable [0]: empty [1]: [2]: empty [3]: empty “foo” hash data key: “foo” “bar” next data key: “bar” next = NULL Credits: Nikita Popov
35. “ Hashtable [0]: empty [1]: [2]: empty [3]: empty “foo” hash data key: “foo” “bar” next data key: “bar” next = NULL head tail
36. “ Já no PHP7 Hashtable
37. “ Hashtable [0]: empty [1]: [2]: empty [3]: “foo” hash data key: “foo” “bar” next data key: “bar” next = NULL “baz” data key: “baz” next = NULL Credits: Nikita Popov
38. “ Hashtable [0]: empty [1]: [2]: empty [3]: “foo” hash data key: “foo” next = NULL TOMBSTONE “baz” data key: “baz” next = NULL Credits: Nikita Popov
39. “ Hashtable ╺ Hashtable reduced from 72 to 56 bytes; ╺ Bucket reduced from 72 to 32 bytes.
40. “ Data structure optimization ╺ Average of 20% of the time in PHP 5 was memory allocation; ╺ Reduced number of allocations; ╺ Reduced memory consumption; ╺ Reduced number of indirect; ╺ Strings are refcounted.
41. “ zval Credits: Nikita Popov ty value
42. “ zval Credits: Nikita Popov ty value (simple) null, bool, int, float
43. “ zval Credits: Nikita Popov ty value (complex) complex data structure: string, array, object
44. “ zval Credits: Nikita Popov refcount=1 ty value (complex) complex data structure: string, array, object zval* $a
45. “ zval Credits: Nikita Popov refcount=1 ty value (complex) complex data structure: string, array, object zval* $a
46. “ zval Credits: Nikita Popov refcount=2 ty value (complex) complex data structure: string, array, object zval* $a zval* $b
47. “ zval Nos dias de hoje...
48. “ zval Credits: Nikita Popov type_info value (complex) zval* $a zval* $b refcount=2 complex data structure: string, array, object
49. “ zval Credits: Nikita Popov type_info value (complex) $a $b refcount=2 complex data structure: string, array, object type_info value (complex)
50. PHP5 Credits: Nikita Popov zval* refcount=1 ty value (simple) null, bool, int, float ╺ 1 memory allocation; ╺ 1 level of indirection; ╺ 40 bytes. type_info value (simple) null, bool, int, float PHP7 ╺ no memory allocation; ╺ without indirection; ╺ 16 bytes.
51. PHP5 Credits: Nikita Popov zval* refcount=1 ty value (complex) ╺ 2 memory allocation; ╺ 2 levels of indirection; ╺ 40 bytes. type_info value (complex) PHP7 ╺ 1 memory allocation; ╺ 1 level of indirection; ╺ 24 bytes. complex data structure: string, array, object refcount=1 complex data structure: string, array, object
52. “ zval
53. “ PHP.NEXT
54. “ PHP.NEXT ╺ Immutable classes and properties; ╺ Arrow functions; ╺ Traits with interfaces; ╺ Named parameters; ╺ Operator functions.