Hardcore PHP

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Diego "Kartones" Muñoz mostrará ciertos trucos y metodología de PHP y AJAX para desarrollos del calibre de Tuenti, empresa que todos conocemos.

Education

C#/.NET background, now a bit of PHP knowledge

Shared Hosting to Tuenti-like scale webs

THE REAL REAL GOAL Build quality PHP code

CACHING TIME Internet Frontends Cache DB

MORE CACHING Internet Frontends Cache DB

MASTER/SLAVE DBS Internet Frontends Cache DBs

TUENTI (OVERVIEW) Internet Farm 1 Farm 2 Farm N Others Frontends Caches DBs

If lucky, separated into ¨functions¨ and templates (PHPBB, Wordpress…)

$TYPICAL PHP News since your last visit: <ul> <? $e = $_POST['email']; $news = mysql_query("SELECT * FROM news WHERE email='{$e}'"); […] foreach($news as $newsItem) { ?> <li><?=$newsItem[0]?></li> <? } ?> </ul>$

$TYPICAL PHP function crop_string($string) { if (strlen($string) > 30) { $string = substr($string, 0, 30) . “…”; } return $string; } $text = crop_string(“developers,developers,developers,developers”);$

$TYPICAL PHP class StringHelper { const CROP_ELLIPSIS = ‘…’;const CROP_DEFAULT_SIZE = 30; public static function Crop($text, $cropLength = self::CROP_DEFAULT_SIZE) { if (mb_strlen($text) > $cropLength) { $croppedText = substr($text,0,$cropLength) . Self::CROP_ELLIPSIS; } else { $croppedText = $text; } return $croppedText; } $text = StringHelper::Crop(“developers,developers,developers,developers”);$

Namespaces / structured source code tree,[object Object]

MVC is typical and goodController Model View

PHP PRACTICES ,[object Object],for($i = 0; $i < count($items); $i++) { if ($items[$i] == searchedItem) { break; } }

PHP PRACTICES ,[object Object],$found = false; for($i = 0; $i < count($items) && !$found; $i++) { if ($items[$i] == searchedItem) { $found = true; } }

Less memory, more concurrent PHP processes

ini_set(“memory_limit”,”8M”);,[object Object]

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Hardcore PHP

4. C#/.NET background, now a bit of PHP knowledge

5. diego@tuenti.com

7. Shared Hosting to Tuenti-like scale webs

8. Typical PHP

9. PHP Practices

10. Coding Practices

11.

12. THE REAL GOAL Avoid the PHP joke

13. THE REAL REAL GOAL Build quality PHP code

14. SHARED HOSTING Internet Frontend + DB

15. FIRST SPLIT Internet Frontend DB

16. MORE FRONTENDS Internet Frontends DB

17. CACHING TIME Internet Frontends Cache DB

18. MORE CACHING Internet Frontends Cache DB

19. MASTER/SLAVE DBS Internet Frontends Cache DBs

20. TUENTI (OVERVIEW) Internet Farm 1 Farm 2 Farm N Others Frontends Caches DBs

21.

22. If lucky, separated into ¨functions¨ and templates (PHPBB, Wordpress…)

23.

24. TYPICAL PHP News since your last visit: <ul> <? $e = $_POST['email']; $news = mysql_query("SELECT * FROM news WHERE email='{$e}'"); […] foreach($news as $newsItem) { ?> <li><?=$newsItem[0]?></li> <? } ?> </ul>

25. TYPICAL PHP News since your last visit: <ul> <? $e = $_POST['email']; $news = mysql_query("SELECT * FROM news WHERE email='{$e}'"); […] foreach($news as $newsItem) { ?> <li><?=$newsItem[0]?></li> <? } ?> </ul>

26. TYPICAL PHP News since your last visit: <ul> <? $e = $_POST['email']; $news = mysql_query("SELECT * FROM news WHERE email='{$e}'"); […] foreach($news as $newsItem) { ?> <li><?=$newsItem[0]?></li> <? } ?> </ul>

27. TYPICAL PHP function crop_string($string) { if (strlen($string) > 30) { $string = substr($string, 0, 30) . “…”; } return $string; } $text = crop_string(“developers,developers,developers,developers”);

28. TYPICAL PHP class StringHelper { const CROP_ELLIPSIS = ‘…’;const CROP_DEFAULT_SIZE = 30; public static function Crop($text, $cropLength = self::CROP_DEFAULT_SIZE) { if (mb_strlen($text) > $cropLength) { $croppedText = substr($text,0,$cropLength) . Self::CROP_ELLIPSIS; } else { $croppedText = $text; } return $croppedText; } $text = StringHelper::Crop(“developers,developers,developers,developers”);

29.

30. Object Orientation

31.

32. MVC is typical and goodController Model View

33.

34.

35.

36. Less memory, more concurrent PHP processes

37. unset()

38.

39. Same PHP execution = same singleton

40. 2 page requests = 2 different singletons