New Wave PHP

The best of the new(ish) bits of PHP

Transcript

1. New Wave PHP Lorna Mitchell, Jam's DrupalCamp
2. New Wave PHP
3. New Wave PHP
4. New Wave PHP
5. New Shiny
6. Magic DIR Constant (5.3) Instead of: dirname(__FILE__); Now you can use: __DIR__;
7. Anonymous Functions (5.3) Declare a function in the place where it is used. (you may have seen this in JavaScript)
8. Anonymous Functions The old way: $things = array("name" => "Alice", "colour" => "Blue", "origin" => "Dreams"); function formatit($value, $key) { echo $key . ": " . $value . "\n"; } array_walk($things, "formatit");
9. Anonymous Functions Using an anonymous function: $things = array("name" => "Alice", "colour" => "Blue", "origin" => "Dreams"); array_walk($things, function ($value, $key) { echo $key . ": " . $value . "\n"; });
10. Namespaces (5.3) Namespaces are for combining libraries in one project. • we keep our own code in its own namespace(s) • we can pick-and-mix other people's code • class names don't have crazy long prefixes
11. Namespaced Library File namespace Lorna; class Nonsense { protected $words = array("wibble", "squeak", "howl", "pop"); public function speak() { return $this->words[ array_rand($this->words)]; } }
12. Namespaced Calling Code include 'lorna/nonsense.php'; use Lorna\Nonsense; $nsense = new Nonsense(); echo $nsense->speak(); $other = new \StdClass();
13. PHP's Own Webserver (5.4) php -S localhost:8080
14. PHP's Own Webserver php -S dev.project.local:8080 -t /var/www/cool-project/web -c php-ini.development routing.php
15. Array Dereferencing (5.4) function getList() { return ['Grumpy', 'Sleepy', 'Bashful', 'Doc']; } // grab first item from list $item = getList()[0]; echo $item;
16. Echo Shortcut (5.4) PHP 5.4 removes short_open_tag config option • <? is never valid • <?= is always valid
17. Echo Shortcut <p>A template saying "hi, <?php echo $name ?>"</p> Could also be written as: <p>A template saying "hi, <?=$name ?>"</p>
18. Short Array Notation (5.4) Three sets of equivalent notation: $game = array(0 => 'stone', 1 => 'paper', 2 => 'scissors'); $game[0] = 'paper'; $game[1] = 'scissors'; $game[2] = 'stone'; $game = [0 => 'scissors', 1 => 'stone', 2 => 'paper'];
19. Less Nonsense (5.4) Removed in PHP 5.4: • register_globals • register_long_arrays • safe_mode • magic_quotes • allow_call_time_pass_reference • y2k_compliance • ereg* functions
20. Easy Password Hashing (5.5) $pass = "secretpassword"; $hashed = password_hash($pass, PASSWORD_DEFAULT); echo $hashed; $2y$10$Q7Rm.Cmcu4lbvI7.C2q4Z.1LLoh4C63vBSfflQtfjs
21. Easy Password Hashing $existing_hash = '$2y$10$Q7Rm.Cmcu4lbvI7.C2q4Z.1LLoh4C $pass = "secretpassword"; if(password_verify($pass, $existing_hash)) echo "All good"; else echo "Go away"; For PHP < 5.5: http://github.com/ircmaxell/password_compat
22. Built-in OpCache (5.5) Replaces APC - beware this is disabled by default. Turn on opcache.enable and opcache.enable_cli
23. Upgrading An Existing System
24. Performance Comparison
25. How To Upgrade 1. Turn on E_DEPRECATED on your current platform and watch the logs (PHP 5.3+) 2. Compile PHP and run test suite with target version 3. Run application with PHP's webserver (PHP 5.4+) 4. Upgrade a test/staging platform 5. Go for it
26. Finding Platforms New projects should be PHP 5.5 or later. Questions to ask: • What versions of PHP are available? • Are backups included? • Which extensions are available, and can I add others? • Can I get support with my PHP setup?
27. Unofficial List of Providers • Servergrove http://www.servergrove.com/ • Linode https://www.linode.com/ • Digital Ocean https://www.digitalocean.com/ • Siteground http://www.siteground.com/ • Rackspace http://rackspace.com
28. Drupal 8 and the Future
29. Come to the Future
30. Come to the Future PHP now has: • even better features • great tools • improved performance • a rich future with tools like Drupal built on it
31. Questions?
32. Resources Intermediate PHP http://lrnja.net/php-video Contact me: @lornajane or http://lornajane.net