![Array dereferencing strings ● Dereference const expressions ● https://wiki.php.net/rfc/constdereference var_dump( "php"[1] ); // 'h' var_dump( [1, 2, 3][1] ); // 2 var_dump( [ ['foo, 'bar'], [1, 2] ] [0][1] ); // "bar"](https://image.slidesharecdn.com/phpin2013-130617070558-phpapp02/75/Php-in-2013-Web-5-2013-conference-28-2048.jpg)
![Engine performance ● PHP 5.3.latest empty_loop 0.161 func() 0.459 0.298 undef_func() 0.469 0.309 int_func() 0.446 0.285 $x = self::$x 0.444 0.284 self::$x = 0 0.441 0.281 isset(self::$x) 0.431 0.270 empty(self::$x) 0.443 0.283 $x = Foo::$x 0.586 0.425 Foo::$x = 0 0.808 0.647 isset(Foo::$x) 0.578 0.417 empty(Foo::$x) 0.590 0.429 self::f() 0.716 0.555 Foo::f() 0.752 0.591 $x = $this->x 0.426 0.265 $this->x = 0 0.497 0.337 $this->x += 2 0.439 0.279 ++$this->x 0.381 0.220 --$this->x 0.404 0.244 $this->x++ 0.411 0.251 $this->x-- 0.415 0.254 isset($this->x) 0.423 0.263 empty($this->x) 0.433 0.272 $this->f() 0.610 0.449 $x = Foo::TEST 0.353 0.193 new Foo() 1.763 1.602 $x = TEST 0.371 0.211 $x = $_GET 0.361 0.200 $x = $GLOBALS['v'] 0.501 0.341 $x = $hash['v'] 0.355 0.194 $x = $str[0] 0.660 0.499 $x = $a ?: null 2.139 1.978 $x = $f ?: tmp 0.435 0.274 $x = $f ? $f : $a 2.141 1.980 $x = $f ? $f : tmp 0.418 0.258 Total 21.259](https://image.slidesharecdn.com/phpin2013-130617070558-phpapp02/75/Php-in-2013-Web-5-2013-conference-35-2048.jpg)
![Engine performance ● PHP 5.4.latest empty_loop 0.117 func() 0.380 0.263 undef_func() 0.377 0.260 int_func() 0.336 0.219 $x = self::$x 0.361 0.245 self::$x = 0 0.331 0.214 isset(self::$x) 0.232 0.116 empty(self::$x) 0.243 0.127 $x = Foo::$x 0.327 0.210 Foo::$x = 0 0.217 0.100 isset(Foo::$x) 0.279 0.162 empty(Foo::$x) 0.216 0.100 self::f() 0.398 0.281 Foo::f() 0.365 0.248 $x = $this->x 0.363 0.246 $this->x = 0 0.322 0.205 $this->x += 2 0.252 0.136 ++$this->x 0.220 0.103 --$this->x 0.224 0.107 $this->x++ 0.248 0.132 $this->x-- 0.252 0.135 isset($this->x) 0.232 0.115 empty($this->x) 0.251 0.135 $this->f() 0.423 0.307 $x = Foo::TEST 0.220 0.103 new Foo() 0.821 0.705 $x = TEST 0.169 0.052 $x = $_GET 0.256 0.140 $x = $GLOBALS['v'] 0.450 0.334 $x = $hash['v'] 0.355 0.238 $x = $str[0] 0.369 0.252 $x = $a ?: null 0.235 0.118 $x = $f ?: tmp 0.330 0.213 $x = $f ? $f : $a 0.245 0.129 $x = $f ? $f : tmp 0.334 0.217 Total 10.749](https://image.slidesharecdn.com/phpin2013-130617070558-phpapp02/75/Php-in-2013-Web-5-2013-conference-36-2048.jpg)
![Engine performance ● PHP 5.5.latest empty_loop 0.117 func() 0.396 0.279 undef_func() 0.415 0.298 int_func() 0.325 0.208 $x = self::$x 0.286 0.169 self::$x = 0 0.399 0.282 isset(self::$x) 0.237 0.120 empty(self::$x) 0.282 0.165 $x = Foo::$x 0.246 0.129 Foo::$x = 0 0.320 0.203 isset(Foo::$x) 0.203 0.086 empty(Foo::$x) 0.248 0.131 self::f() 0.433 0.316 Foo::f() 0.395 0.278 $x = $this->x 0.249 0.132 $this->x = 0 0.320 0.203 $this->x += 2 0.251 0.134 ++$this->x 0.309 0.192 --$this->x 0.223 0.106 $this->x++ 0.248 0.131 $this->x-- 0.258 0.141 isset($this->x) 0.236 0.119 empty($this->x) 0.262 0.145 $this->f() 0.438 0.321 $x = Foo::TEST 0.225 0.107 new Foo() 0.825 0.708 $x = TEST 0.177 0.060 $x = $_GET 0.262 0.145 $x = $GLOBALS['v'] 0.357 0.240 $x = $hash['v'] 0.267 0.150 $x = $str[0] 0.368 0.251 $x = $a ?: null 0.233 0.115 $x = $f ?: tmp 0.317 0.200 $x = $f ? $f : $a 0.254 0.137 $x = $f ? $f : tmp 0.318 0.201 Total 10.700](https://image.slidesharecdn.com/phpin2013-130617070558-phpapp02/75/Php-in-2013-Web-5-2013-conference-37-2048.jpg)
Uploaded byjulien pauli
Php in 2013 (Web-5 2013 conference)
This document summarizes the history and evolution of PHP from its origins in 1995 as a CGI scripting language through its current version 5.5 released in 2013. It describes some of the major milestones like the introduction of the Zend Engine in PHP 4 that improved performance and compilation, and the transition to a true object model in PHP 5. It highlights new features in PHP 5.5 like the password hashing API and generators. Performance benchmarks show PHP 5.5 is faster than previous versions with speed improvements up to 20% from PHP 5.3. The document promotes contributing to the open source PHP project and lists some of the key areas and ways people can get involved.
Php in 2013 (Web-5 2013 conference)
- 1. PHP in 2013 PHP'sstory to nowadays
- 2. Hello ● Hello, I'mJulien PAULI – PHP 5.5 Release Manager – Working for blablacar in Paris (www.blablacar.com) – Working with PHP since ~10y – Working on PHP internals ~3y
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- 4.
- 5. 1995 : CGI data= getenv("QUERY_STRING"); if(data && *data) { params = data; dest = data; while(*data) { if(*data=='+') *dest=' '; else if(*data == '%' && ishex(*(data+1))&&ishex(*(data+2))) { *dest = (char) htoi(data + 1); data+=2; } else *dest = *data; data++; dest++; } *dest = '0'; s = strtok(params,"&"); do { tmp = strchr(s,'='); if(tmp) { *tmp = '0'; if(!strcmp(s,"name")) name = tmp+1; else if(!strcmp(s,"age")) age = tmp+1; } } while(s=strtok(NULL,"&")); printf("Hi %s, you are %s years oldn",name,age); }
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- 7. Better stuff <html><head><title>Form Example</title></head> <body><h1>MyExample Form</h1> <form action="form.phtml" method="POST"> Name: <input type="text" name="name"> Age: <input type="text" name="age"> <br><input type="submit"> </form> <?if($name):?> Hi <?echo $name?>, you are <?echo $age?> years old <?endif?> </body></html>
- 9. First PHPs ● PHP1 then 2 and PHP 3 ● 1998 ● Who still remembers PHP 3 ?
- 10. Refresh your mind! ● Go and get it ! ● http://museum.php.net
- 11. PHP 4 ● 2000 ●sessions ● Better extensions management ● Zend Engine – Compilation
- 12. Zend Engine ● ZeevSuraski ● Andi Gutmans ● Total rewrite of PHP3 ● Introduction of a compilation/execution engine ● Performances
- 13. PHP 5 ● ZendEngine 2 (improved from 1, yep) – New OO model (true model) ● 5.0 (2004) ● 5.1 (2005) ● 5.2 (2006) ● 5.3 (2009) ● 5.4 (2011) ● 5.5 (2013)
- 14. PHP release process ●Starting from 5.4, we have a release process ● https://wiki.php.net/rfc/releaseprocess ● Yearly new major/minor (5.4->5.5 or 6.0) – New features – Big changes. Majors may break BC – 3 years of life (2 + 1) ● Monthly new revisions (5.4.3->5.4.4) – Bug fixes, no new features, BC kept ● EOLed security releases – After EOL, 1 year of security fixes
- 15. PHP Ecosystem ● Read/improvethe doc – www.php.net – edit.php.net ● Develop – wiki.php.net – bugs.php.net – git.php.net / pecl.php.net – lxr.php.net ● Improve quality – qa.php.net – bugs.php.net ● Download – snaps.php.net – museum.php.net
- 16. Source distributions ● Weuse Git – http://git.php.net ● We mirror on Github – Social coding – New ideas – Pull Requests
- 17. PHP contributors ● About10 to 15 active people ● Lots more total ● Contribute on – Code (new features, changes, bugs&fixes) – Doc & translations – Infra services (hosting php.net worldwide) – Human management – … lots of things to do
- 18.
- 19. PHP 5.5 newfeatures ● Password hashing API ● "Finally" keyword ● Generators ● Syntax and engine improvements ● Breaks, deprecations ● … more not reported here
- 20. New Password hashingAPI ● PHP users don't really understand/care about the concept behing hashing, salting and crypting ● PHP doesn't give any hints about that ● User are left on their own – Until 5.5 version – Welcome a new password hashing API !
- 21. New Password hashingAPI ● https://wiki.php.net/rfc/password_hash ● See how easy that looks now : – To generate a hash $password = 'secret'; $hash = password_hash($password, PASSWORD_DEFAULT); var_dump($hash); // "$2y$10$Pa2cIqH5X3m6iqIYVDBdvOUcggnXnZzBy0dlie 4VRHLr3ncLcyB7a"
- 22. New Password hashingAPI ● https://wiki.php.net/rfc/password_hash ● See how easy that looks now : – To verify a hash $provided_password = 'secret'; $hash = "$2y$10$Pa2cIqH5X3m6iqIYVDBdvOUcggnXnZzBy0 dlie4VRHLr3ncLcyB7a"; if (password_verify($provided_password, $hash)) { echo "you are welcome" ; }
- 23. New Password hashingAPI ● More options : – choose your hashing algorithm – choose a salt from yours – choose a CPU cost $password = "mysecret" ; $hash =password_hash($password, PASSWORD_BCRYPT, array("cost" => 5, "salt" => "my_secret_salt") ) ;
- 24. New Password hashingAPI ● Just one Database field is needed ● The hash encapsulates all the infos – algorithm used – salt used – cost used – hash itself "$2y$10$Pa2cIqH5X3m6iqIYVDBdvOUcggnXnZzBy0dlie4VR...
- 25. Other changes ● ext/intlhas been massively worked on / improved ● ext/curl up to date with new libcurl ● bison < 2.4 no longer supported (parser) ● libpcre updated ● array_column() ● cli_set_process_title() ● Lots of bug fixes
- 26.
- 27. foreach() changes ● Foreachnow supports list() ● https://wiki.php.net/rfc/foreachlist $users = array( array('Foo', 'Bar'), array('Baz', 'Qux'); ); // Before foreach ($users as $user) { list($firstName, $lastName) = $user; echo "First name: $firstName, last name: $lastName. "; } // After foreach ($users as list($firstName, $lastName)) { echo "First name: $firstName, last name: $lastName. "; }
- 28. Array dereferencing strings ●Dereference const expressions ● https://wiki.php.net/rfc/constdereference var_dump( "php"[1] ); // 'h' var_dump( [1, 2, 3][1] ); // 2 var_dump( [ ['foo, 'bar'], [1, 2] ] [0][1] ); // "bar"
- 29. OPCache ● OPCache ="ZendOptimizerPlus" for PHP – It's been freed by Zend recently – It's then been renamed ● OPCache will be shipped with PHP 5.5 , as an extension you have to activate at compile time – it will be maintained together with PHP itself ● APC is now dead
- 30. OPCache roles ● OPCodecaching + optimizing
- 31.
- 32. PHP 5.5 compatibilitybreaks ● ext/mysql has been deprecated /! ● /e modifier for preg() has been deprecated ● Dropped support for Windows XP and 2k3 ● No more php logo and zend logo functions ● pack()/unpack() minor changes
- 33. Performances ? ● Thebiggest step was 5.3 to 5.4 – First time for such a boost ● 5.5 is faster than 5.4 – But don't expect the same effect than 5.3 to 5.4
- 34. Performances ● Testing blablacar.com –PHPUnit 3.7.21 – 959 tests – (Lots of external services and SQL) Time: 14:32, Memory: 1202.50Mb Time: 12:48, Memory: 995.50Mb Time: 12:30, Memory: 996.50Mb 5.3.latest 5.4.latest 5.5.latest
- 35. Engine performance ● PHP5.3.latest empty_loop 0.161 func() 0.459 0.298 undef_func() 0.469 0.309 int_func() 0.446 0.285 $x = self::$x 0.444 0.284 self::$x = 0 0.441 0.281 isset(self::$x) 0.431 0.270 empty(self::$x) 0.443 0.283 $x = Foo::$x 0.586 0.425 Foo::$x = 0 0.808 0.647 isset(Foo::$x) 0.578 0.417 empty(Foo::$x) 0.590 0.429 self::f() 0.716 0.555 Foo::f() 0.752 0.591 $x = $this->x 0.426 0.265 $this->x = 0 0.497 0.337 $this->x += 2 0.439 0.279 ++$this->x 0.381 0.220 --$this->x 0.404 0.244 $this->x++ 0.411 0.251 $this->x-- 0.415 0.254 isset($this->x) 0.423 0.263 empty($this->x) 0.433 0.272 $this->f() 0.610 0.449 $x = Foo::TEST 0.353 0.193 new Foo() 1.763 1.602 $x = TEST 0.371 0.211 $x = $_GET 0.361 0.200 $x = $GLOBALS['v'] 0.501 0.341 $x = $hash['v'] 0.355 0.194 $x = $str[0] 0.660 0.499 $x = $a ?: null 2.139 1.978 $x = $f ?: tmp 0.435 0.274 $x = $f ? $f : $a 2.141 1.980 $x = $f ? $f : tmp 0.418 0.258 Total 21.259
- 36. Engine performance ● PHP5.4.latest empty_loop 0.117 func() 0.380 0.263 undef_func() 0.377 0.260 int_func() 0.336 0.219 $x = self::$x 0.361 0.245 self::$x = 0 0.331 0.214 isset(self::$x) 0.232 0.116 empty(self::$x) 0.243 0.127 $x = Foo::$x 0.327 0.210 Foo::$x = 0 0.217 0.100 isset(Foo::$x) 0.279 0.162 empty(Foo::$x) 0.216 0.100 self::f() 0.398 0.281 Foo::f() 0.365 0.248 $x = $this->x 0.363 0.246 $this->x = 0 0.322 0.205 $this->x += 2 0.252 0.136 ++$this->x 0.220 0.103 --$this->x 0.224 0.107 $this->x++ 0.248 0.132 $this->x-- 0.252 0.135 isset($this->x) 0.232 0.115 empty($this->x) 0.251 0.135 $this->f() 0.423 0.307 $x = Foo::TEST 0.220 0.103 new Foo() 0.821 0.705 $x = TEST 0.169 0.052 $x = $_GET 0.256 0.140 $x = $GLOBALS['v'] 0.450 0.334 $x = $hash['v'] 0.355 0.238 $x = $str[0] 0.369 0.252 $x = $a ?: null 0.235 0.118 $x = $f ?: tmp 0.330 0.213 $x = $f ? $f : $a 0.245 0.129 $x = $f ? $f : tmp 0.334 0.217 Total 10.749
- 37. Engine performance ● PHP5.5.latest empty_loop 0.117 func() 0.396 0.279 undef_func() 0.415 0.298 int_func() 0.325 0.208 $x = self::$x 0.286 0.169 self::$x = 0 0.399 0.282 isset(self::$x) 0.237 0.120 empty(self::$x) 0.282 0.165 $x = Foo::$x 0.246 0.129 Foo::$x = 0 0.320 0.203 isset(Foo::$x) 0.203 0.086 empty(Foo::$x) 0.248 0.131 self::f() 0.433 0.316 Foo::f() 0.395 0.278 $x = $this->x 0.249 0.132 $this->x = 0 0.320 0.203 $this->x += 2 0.251 0.134 ++$this->x 0.309 0.192 --$this->x 0.223 0.106 $this->x++ 0.248 0.131 $this->x-- 0.258 0.141 isset($this->x) 0.236 0.119 empty($this->x) 0.262 0.145 $this->f() 0.438 0.321 $x = Foo::TEST 0.225 0.107 new Foo() 0.825 0.708 $x = TEST 0.177 0.060 $x = $_GET 0.262 0.145 $x = $GLOBALS['v'] 0.357 0.240 $x = $hash['v'] 0.267 0.150 $x = $str[0] 0.368 0.251 $x = $a ?: null 0.233 0.115 $x = $f ?: tmp 0.317 0.200 $x = $f ? $f : $a 0.254 0.137 $x = $f ? $f : tmp 0.318 0.201 Total 10.700
- 38. Thank you forlistening !