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Unknown features of PHP
- 1. UNKNOWN FEATURES OF PHP or less known ;)
- 2. ABOUT ME CERTIFIED PHP ENGINEER CERTIFIED A R C H I T E CT 2 Łukasz Witczak 10+ yrs experience
- 5. IS IT POSSIBLETO WRITE STRICTLYTYPED PHP CODE? Never trust accepted answer at stackoverflow
- 6. STATIC/DYNAMIC STRICT/WEAK? • Static/Dynamic typing is about when type information is aquired (at compiletime or at runtime) • Strong/Weak typing is about how strictly types are distinguished (e.g. whether the language tries to do implicit conversion from strings to numbers).
- 7. WEAKTYPING AND STRICT TYPING • Fully strict type checking where no conversion happens (Go, Facebook's Hack) • Widening primitive type checking where “safe” conversions happen (Java, Pascal, PHP Objects). • Weak type checking which all conversions are allowed, with possible warnings raised (which is used to a limited extent by C, C#, C++ andVisual Basic, PHP scalars?)
- 8. “DESPITE THEIR PRODUCTIVITY ADVANTAGES, DYNAMIC LANGUAGES MAY NOT BE THE BEST CHOICES FOR ALL APPLICATIONS, PARTICULARLY FOR VERY LARGE CODE BASES AND HIGH- PERFORMANCE APPLICATIONS.” http://docs.zephir-lang.com/en/latest/motivation.html#statically-typed- versus-dynamically-typed-languages
- 9. TYPE HINTING PHP 5+
- 11. SCALARTYPE HINTS FOR PHP 5.4+ • string • integer, int • float, double • boolean, bool • resource https://pecl.php.net/package/strict
- 12. LIMITATIONS • “Internal functions cannot use strict hints, only user code is supported.” • “Because the parser detects scalar hints as classes, they cannot have default values.” This was written before we knew that PHP7 would get strict parameter and return typing. The best thing to do now is probably make this a close approximation of compatibility for PHP5 ... I'm super busy right now and this isn't really a priority …
- 13. –Joe Watkins “ I'm super busy right now and this isn't really a priority ...” FUTURE
- 14. SPL_TYPES
- 15. http://php.net/manual/en/intro.spl-types.php “This extension aims at helping people making PHP a stronger typed language and can be a good alternative to scalar type hinting.” SPL_TYPES
- 18. demo?
- 23. SPL_TYPES • Total downloads: 53,633
- 24. ZEPHIR Zephir, an open source, high-level language designed to ease the creation and maintainability of extensions for PHP with a focus on type and memory safety.
- 25. ZEPHIR STATICTYPES • boolean A boolean expresses a truth value. It can be either ‘true’ or ‘false’. • integer Signed integers.At least 16 bits in size. • unsigned integer Unsigned integers.At least 16 bits in size. • char Smallest addressable unit of the machine that can contain basic character set. • unsigned char Same size as char, but guaranteed to be unsigned. • long Long signed integer type.At least 32 bits in size. • unsigned long Same as long, but unsigned. • float/double Double precision floating-point type.The size is platform-dependent. • string A string is series of characters, where a character is the same as a byte. • array An structure that can be used as hash, map, dictionary, collection, stack, etc.
- 27. ZEPHIR CHAR AND STRING
- 30. SYNCHRONOUS Tasks Time 0 150 300 450 600 Task #1 Task #2 Task #3
- 31. ASYNCHRONOUS Tasks Time [ms] 0 75 150 225 300 Task #1 Task #2 Task #3
- 32. NODE.JS
- 34. EVENT-DRIVEN, NON- BLOCKING I/O WITH PHP
- 36. pond 3mln pobrań promise
- 37. • StreamSelectLoop - out of the box • LibEventLoop -This uses the libevent pecl extension with a number of system-specific backends (epoll, kqueue). • LibEvLoop -This uses the libev pecl extension (github). It supports the same backends as libevent. • ExtEventLoop -This uses the event pecl extension. It supports the same backends as libevent loop
- 38. by Marc J. Schmidt
- 39. • http://marcjschmidt.de/blog/2014/02/08/php- high-performance.html • https://github.com/php-pm/php-pmLibEvLoop • http://reactphp.org/ • https://github.com/reactphp resources
- 40. https://github.com/ratchetphp/Ratchet ratchetphp/Ratchet Ratchet is a loosely coupled PHP library providing developers with tools to create real time, bi-directional applications between clients and servers over WebSockets. http://socketo.me/
- 41. • Supports the RFC6455, HyBi-10+, and Hixie76 protocol versions (at the same time) • Tested on Chrome 13+, Firefox 6+, Safari 5+, iOS 4.2+, IE 8+ • Ratchet passes the Autobahn Testsuite (non-binary messages)
- 44. • mysql (with non blocking I/O) driver for reactphp, • It is written in pure PHP - implemented the mysql protocol. react/mysql
- 45. • Installs: 530 • Stars: 58 • Watchers: 11 • Forks: 13 • Open Issues: 3 react/mysql
- 47. • Evented filesystem access utilising asyncronous POSIX I/O by means of libEIO C library • requires http://php.net/eio extension react/filesystem
- 48. react/filesystem
- 49. • Installs: 1 014 • Dependents: 2 • Stars: 33 • Watchers: 10 • Forks: 7 • Open Issues: 5 filesystem non-blocking I/O
- 51. HACK LANG
- 52. HACK LANG od hhvm 3.6 - obecnie hhvm 3.10
- 53. ASYNC DB QUERIES
- 56. ASYNC POSTGRESQL
- 57. ASYNC HTTP
- 58. CURL_MULTI
- 60. BUZZ
- 61. BUZZMULTI
- 62. BUZZVS BUZZMULTI Time[ms] 0 1250 2500 3750 5000 Sync Multi Trudność w gromadzeniu requestów
- 63. GUZZLE 5 END OF SCRIPT http://www.rfc-editor.org/rfc/rfc1945.txt 200 http://www.rfc-editor.org/rfc/rfc7540.txt 200 http://www.rfc-editor.org/rfc/rfc2068.txt 200
- 65. THREADS
- 71. PTHREADS • Object Orientated (like Java) • Easy to use an safety built in (no MUTEX) • High level implementation of POSIX threads • Well documented
- 72. PTHREADS EXAMPLE
- 73. PTHREADS • Stable since 2013-09-08 (0.0.45) • Over 163,000 downloads (from PECL) • Heavily developed: (35 releases) • Mature
- 75. PTHREADS • http://pthreads.org/ • https://gist.github.com/krakjoe/9384409 • https://gist.github.com/krakjoe/6437782 read first
- 77. –Joe Watkins “(…)you can't use pthreads safely and sensibly anywhere but CLI.”
- 79. THREDS ARE HARD • https://web.stanford.edu/~ouster/cgi-bin/papers/ threads.pdf
- 84. OPERATOR OVERLOADING IN PHP EXTENSIONS
- 85. OPERATOR OVERLOADING IN PHP EXTENSIONS