Why Modern PHP is Awesome And How You Can Use It Today

From PeersConf 2014, a conference primarily for PHP developers working with ExpressionEngine, Craft, Statamic, and CodeIgniter.

The PHP language and its community have seen incredible growth in the last few years. It can be hard to keep up with the pace of new development, and harder to keep our sites up-to-date. But these new packages, practices, and SAASes have amazing potential to improve our sites' flexibility, power, ease of development, and longevity. This isn't just for brand-new frameworks like Laravel, either--CMSes like Craft and PyroCMS have them baked in, and even ExpressionEngine and Codeigniter can be modified to work with modern PHP. Learn about Composer, Packagist, SOLID, SAASes, exceptions, PSRs, and how these and many more tools and practices will transform your experience of PHP.

Transcript

1. Modern PHP is Amazing You Can Use It Today @stauffermatt A N D Why How
2. Matt Stauffer @stauffermatt
3. Gainesville
4. My history Graphic Design
5. My history Graphic Design Frontend
6. My history Graphic Design Frontend Hacky PHP & Wordpress
7. My history Graphic Design Frontend Hacky PHP & Wordpress Left for 5 years
8. My history Graphic Design Frontend Hacky PHP & Wordpress CodeIgniter Left for 5 years
9. My history Graphic Design Frontend Hacky PHP & Wordpress CodeIgniter Expression Engine Left for 5 years
10. My history Graphic Design Frontend Hacky PHP & Wordpress CodeIgniter Expression Engine Rails Left for 5 years
11. My history Graphic Design Frontend Hacky PHP & Wordpress CodeIgniter Expression Engine Rails Laravel Left for 5 years
12. My history Graphic Design Frontend Hacky PHP & Wordpress CodeIgniter Expression Engine Rails Laravel General Good Developer-y Stuff Left for 5 years
13. Who are we?
14. Who are we? Self-taught
15. Who are we? Self-taught Wordpress, EE, CI, etc.
16. Who are we? Self-taught Wordpress, EE, CI, etc. Bootstrappy small-to-medium companies
17. Who are we? Self-taught Wordpress, EE, CI, etc. Bootstrappy small-to-medium companies “Lone cowboy” types*
18. Our tools are holding us back. THE PROBLEM:
19. Our tools are holding us back. THE PROBLEM: (certain of)
20. Our tools are holding us back. THE PROBLEM: (certain of) THE SOLUTION:
21. Our tools are holding us back. THE PROBLEM: (certain of) Fix (or ditch) them. THE SOLUTION:
22. Disclaimers:
23. Disclaimers: 1. You might already know this
24. Disclaimers: 1. You might already know this 2. This may be totally overwhelming
25. Disclaimers: 1. You might already know this 2. This may be totally overwhelming 3. Easiest in modern environments
26. Disclaimers: 1. You might already know this 2. This may be totally overwhelming 3. Easiest in modern environments 4. One size fits some
27. 5 LESSONS TO MAKE YOUR PHP BETTER
28. Embrace the Object Object Oriented PHP LESSON 1
29. Classic PHP is { procedural }
30. <?php require_once("common.inc"); $page_slug = getPageSlug($_GET); $page_title = getPageTitle($page_slug); ! include_once("templates/header.inc"); ! echo getHeaderNav($page_slug); ! // ... Procedural PHP
31. <?php require_once("common.inc"); $page_slug = getPageSlug($_GET); $page_title = getPageTitle($page_slug); ! include_once("templates/header.inc"); ! echo getHeaderNav($page_slug); ! // ... about.php include_once( "templates/about.inc" ); ! include_once( "templates/footer.inc" ); Procedural PHP
32. <?php require_once("common.inc"); $page_slug = getPageSlug($_GET); $page_title = getPageTitle($page_slug); ! include_once("templates/header.inc"); ! echo getHeaderNav($page_slug); ! // ... about.php include_once( "templates/about.inc" ); ! include_once( "templates/footer.inc" ); portfolio.php $portfolio_items = array( array( 'title' => 'Chuck E Cheese', 'screenshot' => 'images/portfolio/ chuck01.jpg' Procedural PHP
33. <?php require_once("common.inc"); $page_slug = getPageSlug($_GET); $page_title = getPageTitle($page_slug); ! include_once("templates/header.inc"); ! echo getHeaderNav($page_slug); ! // ... about.php include_once( "templates/about.inc" ); ! include_once( "templates/footer.inc" ); portfolio.php $portfolio_items = array( array( 'title' => 'Chuck E Cheese', 'screenshot' => 'images/portfolio/ chuck01.jpg' contact-us.ph if(isset($_POST)) $results = va if ($results include_o } else { $errors = } Procedural PHP
34. <?php class Portfolio_item { public $id; public $title; public $url; protected $cache_images; ! public function __construct(array $properties) { $this->hydrate($properties); } ! public function getRelatedImages() { if ($this->cache_images === null) { $this->cacheRelatedImages(); } ! return $this->cache_images; } ! protected function hydrate(array $properties) Object-Oriented PHP
35. <?php class Portfolio_item { public $id; public $title; public $url; protected $cache_images; ! public function __construct(array $properties) { $this->hydrate($properties); } ! public function getRelatedImages() { if ($this->cache_images === null) { $this->cacheRelatedImages(); } ! return $this->cache_images; } ! protected function hydrate(array $properties) Name Object-Oriented PHP
36. <?php class Portfolio_item { public $id; public $title; public $url; protected $cache_images; ! public function __construct(array $properties) { $this->hydrate($properties); } ! public function getRelatedImages() { if ($this->cache_images === null) { $this->cacheRelatedImages(); } ! return $this->cache_images; } ! protected function hydrate(array $properties) Name Properties Object-Oriented PHP
37. <?php class Portfolio_item { public $id; public $title; public $url; protected $cache_images; ! public function __construct(array $properties) { $this->hydrate($properties); } ! public function getRelatedImages() { if ($this->cache_images === null) { $this->cacheRelatedImages(); } ! return $this->cache_images; } ! protected function hydrate(array $properties) Name Properties Constructor Object-Oriented PHP
38. <?php class Portfolio_item { public $id; public $title; public $url; protected $cache_images; ! public function __construct(array $properties) { $this->hydrate($properties); } ! public function getRelatedImages() { if ($this->cache_images === null) { $this->cacheRelatedImages(); } ! return $this->cache_images; } ! protected function hydrate(array $properties) Name Properties Constructor Public method Object-Oriented PHP
39. <?php class Portfolio_item { public $id; public $title; public $url; protected $cache_images; ! public function __construct(array $properties) { $this->hydrate($properties); } ! public function getRelatedImages() { if ($this->cache_images === null) { $this->cacheRelatedImages(); } ! return $this->cache_images; } ! protected function hydrate(array $properties) Name Properties Constructor Public method Protected method Object-Oriented PHP
40. ! ! ! ! ! <!-- View file: --> ! <h1><?= $item->title; ?></h1> ! <h2>Images</h2> ! <ul class="slider"> <?php foreach ($item->getRelatedImages() as $image): ?> <li><img src="<?= $image->url; ?>" alt="<?= $image->alt; ?>"></li> <?php endforeach; ?> </ul>
41. PHP is an OOP late bloomer 2007 2015 2011 2003 1999 1995
42. PHP is an OOP late bloomer 2007 2015 2011 2003 1999 1995 PHP released 1995
43. PHP is an OOP late bloomer 2007 2015 2011 2003 1999 1995 PHP 5.3 (true OOP) PHP released 1995
44. PHP is an OOP late bloomer 2007 2015 2011 2003 1999 1995 PHP 5.3 (true OOP) PHP released 1995 PHP 5.2 EOL’ed
45. PHP is an OOP late bloomer 2007 2015 2011 2003 1999 1995 PHP 5.3 (true OOP) PHP released 1995 5.3 50% adoption PHP 5.2 EOL’ed
46. CodeIgniter taught me OOP
47. CodeIgniter taught me OOP some OOP-y things
48. 1) Separation of Concerns (MVC)
49. 2) Single Responsibility Principle 3) Modules 4) Singletons (Libraries)
50. CodeIgniter libraries are usually just wrappers around a few related functions
51. CodeIgniter Developer != (necessarily) OOP Developer
52. brandon ruined me
53. What OOP isn’t
54. What OOP isn’t Taking all of your old DB- related functions & bundling them into a "model"
55. Taking all of your old functions & bundling them into a "library" What OOP isn’t
56. echo createFullDisplayNameForContactReversed( $prefix, $first_name, $middle_name, $last_name, $suffix, etc.); What OOP isn’t
57. What OOP is
58. What OOP is things that do things to other things thing thing thing
59. Windows:Mac/*nix :: Procedural:OOP
60. Foundations Of OOP
61. Interfaces
62. SOLID
63. SOLID 1. Single Responsibility
64. SOLID 1. Single Responsibility 2. Open-Closed
65. SOLID 1. Single Responsibility 2. Open-Closed 3. Liskov Substitution
66. SOLID 1. Single Responsibility 2. Open-Closed 3. Liskov Substitution 4. Interface Segregation
67. SOLID 1. Single Responsibility 2. Open-Closed 3. Liskov Substitution 4. Interface Segregation 5. Dependency Inversion
68. thing2 thing1 Tight Coupling
69. thing2 thang thing1 Tight Coupling
70. thing2 thing1 injected Off Limits Law of Demeter
71. Why OOP?
72. Sharing & Reuse Why OOP?
73. Lower cost of debug Why OOP?
74. Lower cost of comprehension Why OOP?
75. Limited interfaces Why OOP?
76. Lower cost of change Why OOP?
77. Refactor Time
78. * @param array $contact Contact * @param array $options Options * @return string Full name */ function returnContactFullName( array $contact, $options = array() { // Tack middle name onto first if ($contact['contact_mname'] != '') { $contact['contact_fname'] .= ' ' . $contact['contact_mname']; } if ($contact['contact_sp_mname'] != '') { $contact['contact_sp_fname'] .= ' '.$contact['contact_sp_mname' } ! if ( ! empty($contact['contact_sp_fname']) || ( ! empty($contact[ empty($contact['contact_sp_title']))) { // Contact has a spouse. // Prep title $contact_title = $spouse_title = NULL; ! if ( (empty($contact['contact_title']) && empty($contact['contact_ in_array('no_title', $options) ) { // No titles. Go without. } elseif (empty($contact['contact_sp_title'])) { // Title for contact but not spouse. Only can handle if Mr. if ($contact['contact_title'] == 'Mr' || $contact['contact_ti $contact['contact_sp_title'] = str_replace('Mr', 'Mrs', $co $contact_title = $contact['contact_title'];
79. * * @todo Get this out of the helper * @param array $contact Contact * @param array $options Options * @return string Full name */ function returnContactFullName( array $contact, $options = array() ) { // Tack middle name onto first if ($contact['contact_mname'] != '') { $contact['contact_fname'] .= ' ' . $contact['contact_mname']; } if ($contact['contact_sp_mname'] != '') { $contact['contact_sp_fname'] .= ' '.$contact['contact_sp_mname']; } ! if ( ! empty($contact['contact_sp_fname']) || ( ! empty($contact['contact_title']) && ! empty($contact['contact_sp_title']))) { // Contact has a spouse. // Prep title $contact_title = $spouse_title = NULL; ! if ( (empty($contact['contact_title']) && empty($contact['contact_sp_title'])) || in_array('no_title', $options) ) { // No titles. Go without. } elseif (empty($contact['contact_sp_title'])) { // Title for contact but not spouse. Only can handle if Mr. if ($contact['contact_title'] == 'Mr' || $contact['contact_title'] == 'Mr.') { $contact['contact_sp_title'] = str_replace('Mr', 'Mrs', $contact['contact_title']) $contact_title = $contact['contact_title']; Extract refactor
80. * * @todo Get this out of the helper * @param array $contact Contact * @param array $options Options * @return string Full name */ function returnContactFullName( array $contact, $options = array() ) { // Tack middle name onto first if ($contact['contact_mname'] != '') { $contact['contact_fname'] .= ' ' . $contact['contact_mname']; } if ($contact['contact_sp_mname'] != '') { $contact['contact_sp_fname'] .= ' '.$contact['contact_sp_mname']; } ! if ( ! empty($contact['contact_sp_fname']) || ( ! empty($contact['contact_title']) && ! empty($contact['contact_sp_title']))) { // Contact has a spouse. // Prep title $contact_title = $spouse_title = NULL; ! if ( (empty($contact['contact_title']) && empty($contact['contact_sp_title'])) || in_array('no_title', $options) ) { // No titles. Go without. } elseif (empty($contact['contact_sp_title'])) { // Title for contact but not spouse. Only can handle if Mr. if ($contact['contact_title'] == 'Mr' || $contact['contact_title'] == 'Mr.') { $contact['contact_sp_title'] = str_replace('Mr', 'Mrs', $contact['contact_title']) $contact_title = $contact['contact_title']; Extract refactor $this->appendMiddleNames();
81. * * @todo Get this out of the helper * @param array $contact Contact * @param array $options Options * @return string Full name */ function returnContactFullName( array $contact, $options = array() ) { // Tack middle name onto first if ($contact['contact_mname'] != '') { $contact['contact_fname'] .= ' ' . $contact['contact_mname']; } if ($contact['contact_sp_mname'] != '') { $contact['contact_sp_fname'] .= ' '.$contact['contact_sp_mname']; } ! if ( ! empty($contact['contact_sp_fname']) || ( ! empty($contact['contact_title']) && ! empty($contact['contact_sp_title']))) { // Contact has a spouse. // Prep title $contact_title = $spouse_title = NULL; ! if ( (empty($contact['contact_title']) && empty($contact['contact_sp_title'])) || in_array('no_title', $options) ) { // No titles. Go without. } elseif (empty($contact['contact_sp_title'])) { // Title for contact but not spouse. Only can handle if Mr. if ($contact['contact_title'] == 'Mr' || $contact['contact_title'] == 'Mr.') { $contact['contact_sp_title'] = str_replace('Mr', 'Mrs', $contact['contact_title']) $contact_title = $contact['contact_title']; Extract refactor if ($this->hasSpouse()) { $this->appendMiddleNames();
82. * * @todo Get this out of the helper * @param array $contact Contact * @param array $options Options * @return string Full name */ function returnContactFullName( array $contact, $options = array() ) { // Tack middle name onto first if ($contact['contact_mname'] != '') { $contact['contact_fname'] .= ' ' . $contact['contact_mname']; } if ($contact['contact_sp_mname'] != '') { $contact['contact_sp_fname'] .= ' '.$contact['contact_sp_mname']; } ! if ( ! empty($contact['contact_sp_fname']) || ( ! empty($contact['contact_title']) && ! empty($contact['contact_sp_title']))) { // Contact has a spouse. // Prep title $contact_title = $spouse_title = NULL; ! if ( (empty($contact['contact_title']) && empty($contact['contact_sp_title'])) || in_array('no_title', $options) ) { // No titles. Go without. } elseif (empty($contact['contact_sp_title'])) { // Title for contact but not spouse. Only can handle if Mr. if ($contact['contact_title'] == 'Mr' || $contact['contact_title'] == 'Mr.') { $contact['contact_sp_title'] = str_replace('Mr', 'Mrs', $contact['contact_title']) $contact_title = $contact['contact_title']; Extract refactor if ($this->hasSpouse()) { if ( ! $this->hasTitles()) { $this->appendMiddleNames();
83. * * @todo Get this out of the helper * @param array $contact Contact * @param array $options Options * @return string Full name */ function returnContactFullName( array $contact, $options = array() ) { // Tack middle name onto first if ($contact['contact_mname'] != '') { $contact['contact_fname'] .= ' ' . $contact['contact_mname']; } if ($contact['contact_sp_mname'] != '') { $contact['contact_sp_fname'] .= ' '.$contact['contact_sp_mname']; } ! if ( ! empty($contact['contact_sp_fname']) || ( ! empty($contact['contact_title']) && ! empty($contact['contact_sp_title']))) { // Contact has a spouse. // Prep title $contact_title = $spouse_title = NULL; ! if ( (empty($contact['contact_title']) && empty($contact['contact_sp_title'])) || in_array('no_title', $options) ) { // No titles. Go without. } elseif (empty($contact['contact_sp_title'])) { // Title for contact but not spouse. Only can handle if Mr. if ($contact['contact_title'] == 'Mr' || $contact['contact_title'] == 'Mr.') { $contact['contact_sp_title'] = str_replace('Mr', 'Mrs', $contact['contact_title']) $contact_title = $contact['contact_title']; Extract refactor if ($this->hasSpouse()) { if ( ! $this->hasTitles()) { $this->duplicateSpouseTitleIfNeeded(); $this->appendMiddleNames();
84. <?php ! class ContactName { protected $contact_array; protected $contact; protected $options; ! public function __construct(array $contact_array, array $options = array()) { $this->contact_array = $contact_array; $this->options = $options; $this->processContactArray(); } ! public function output() { return $this->getFullName(); } ! protected function getFullName() { if ($this->hasSpouse()) { return $this->getFullNameWithSpouse(); } else { return $this->getFullNameIndividual(); } Extract refactor result <?php ! include_once('ContactName.php'); ! $name = new ContactName( $array_of_name_stuff_from_sql ); echo $name->output(); Example use:
85. Instant Re-use
86. Lone cowboys vs. Jetsons
87. Learn from those who came before you Design Patterns & Coding Standards LESSON 2
88. Design Patterns
89. The Human Brain Identifies Patterns https://www.flickr.com/photos/flamephoenix1991/8376271918/
90. What are Design Patterns?
92. “Gang of Four”
93. Familiar Patterns Module Observer
94. Familiar Patterns (but not by name) Singleton Adapter
95. Not set in stone 23 patterns in “Design Patterns” 13 patterns in “Code Complete” 49 patterns on WIkipedia
96. Standards
97. <?php $pos = strpos($tnt_ini,'RedirectQueryIni'); if($pos !== false){ // Find new query ini function get_between($input, $start, $end) { return substr($input, strlen($start)+strpos($input, $start), (strlen($input) - strpos($input, $end))*(-1)); } $new_ini = trim(get_between($tnt_ini, 'RedirectQueryIni', "\n")); if(empty($new_ini)) { $new_ini = trim(substr($tnt_ini, $pos+strlen('RedirectQueryIni')+1)); $pos = strpos($new_ini, "\n"); if($pos !== false) { $new_ini = $url; } } ! // Compare with existing if($new_ini!=$url) { // Update tnt_orgs with new ini $this->db ->set('tnt_org_ini', $new_ini)
98. You shouldn’t be able to identify who wrote a piece of code just by looking at it.
99. Sublime Text is not the Sistine Chapel. Consistency over cleverness.
100. def. Standards agreements within any group to adhere to a convention. Benefits: consistency, interoperability, comprehension
101. PSRs (FIG)
102. PSRs (FIG) PSR-0/4: Autoloading
103. PSRs (FIG) PSR-0/4: Autoloading PSR-1 & PSR-2: Coding Standards
104. PSRs (FIG) PSR-0/4: Autoloading PSR-1 & PSR-2: Coding Standards PSR-3: Logger Interface
105. PHPCS http://philsturgeon.co.uk/blog/2013/08/php-static-analysis-in-sublime-text
106. How do I get started?
107. read Gang of Four Head First Design Patterns PHP Objects, Patterns, and Practice Brandon Savage’s “PHP Design Patterns”
108. skim read your old code
109. consider next time you write
110. standardize create internal standards
111. <?php namespace Karani\Contacts; ! // Located in /lib/Karani/Contacts/Name.php ! class Name { protected $contact_array; protected $contact; protected $options; ! public function __construct(array $contact_array, array $options = array()) { $this->contact_array = $contact_array; $this->options = $options; $this->processContactArray(); } ! public function output() { return $this->getFullName(); } ! protected function getFullName() { if ($this->hasSpouse()) { return $this->getFullNameWithSpouse(); PSR-4 Name Class <?php ! $name = new Karani\Contacts\Name( $array_of_name_stuff_from_sql ); echo $name->output(); Example use:
112. Lone cowboys vs. Jetsons
113. Play nice with others Composer, Packagist, & Code Reuse LESSON 3
114. Sharing just got easy
115. What's a Package Manager?
116. History of PHP shareability PEAR PHPScripts.org Composer
117. { "name": "mattstauffer/peersconf", "description": "PeersConf Demo", "require": { "nesbot/carbon": "1.6.*", "php": ">=5.3.0", "laravel/framework": "4.0.*", "dflydev/markdown": "1.0.*", "iron-io/iron_mq": "1.4.*", "filp/whoops": "1.0.*", "bugsnag/bugsnag": "2.*", "mockery/mockery": "0.*", "psr/log": "1.0.*", "imagine/imagine": "v0.5.0", "iron-io/iron_worker": "1.4.1" }, "autoload": { "psr-0": { "PeersConf": "application/", }, }, "config": { }, "require-dev": { "fzaninotto/Faker": "dev-master", "phpunit/phpunit": "3.7.*" composer.json
118. Next Time You Need a Package/Library
121. How do I use Composer today?
122. In my CMS... Plugins Dukt & Exp:resso for EE examples Craft: Adrian Macneil “Cocktail Recipes” TD’s Craft Guzzle for wrapping packages
123. In my app... Built into Laravel, Slim, Silex, Yii, Symfony2, ZF2 Can be done in CI
124. A few packages to try out • Guzzle • Twig • Carbon • Monolog
125. Lone cowboys vs. Jetsons
126. Be lazy Delegating to third-party SAAS apps LESSON 4
127. Lone cowboys don’t delegate well.
128. Rails FTW on delegation
129. Karani + PDF PrinceXML $3800 Docraptor $.02-$.08/sheet
130. (also) gridonic/princexml-php
131. The benefits of 3rd party services
132. Limit the requirements of your domain knowledge The benefits of 3rd party services
133. Distribute usefulness to whole company The benefits of 3rd party services
134. Auto-all-the-things The benefits of 3rd party services
135. Consistency The benefits of 3rd party services
136. Worth trying:
137. iron.io
138. mailgun/mandrill/sendgrid
139. bugsnag/getsentry
140. New Relic
141. TravisCI, Coveralls
142. Scrutinizer/Sensio Labs Insights/CodeClimate
143. Lone cowboys vs. Jetsons
144. Cover your butt Testing & TDD LESSON 5
145. You’ve heard you should test…
146. What is (automated software) testing?
147. The Matt Stauffer Authorized Definition Testing: Making sure a piece of code does what it's supposed to, so you can find out if it’s broken*now*, rather than when an angry customer emails you.
148. Benefits of testing
149. 1. Catch bugs in dev
150. 2. Refactor with Confidence
151. <?php ! class nameTest extends CIUnit_TestCase { public function testHandlesSimpleIndividual() { $output_name = 'John Doe'; ! $name = new Name($this->simple_john_doe, array()); ! $this->assertEquals($output_name, $name->output()); } ! public function testHandlesSimpleIndividualReversed() { $output_name = 'Doe, John'; ! $name = new Name($this->simple_john_doe, array('reversed')); ! $this->assertEquals($output_name, $name->output()); } ! public function testHandlesDecoratedIndividual() { $output_name = 'Dr. John Edward Doe MD'; ! $name = new Name($this->decorated_john_doe, array());
152. "What a pain to go back and write all those tests"
153. What is TDD?
154. TDD != testing
155. Red Green Refactor
156. [red example]
158. How do I get started with testing?
159. 1. PHPUnit
160. 2. Write tests for all bug fixes
161. 3. Write tests for all new code
162. 4. Stick with just unit tests for now
163. How do I get started in my environment?
164. Laravel: Built in
165. Craft: Built in (check out adrian macneil)
166. CodeIgniter: It can be done https://bitbucket.org/kenjis/my-ciunit
167. ExpressionEngine: It can be done, ish Stephen Lewis & Testee
168. Lone cowboys vs. Jetsons
170. Outro
171. Recap
172. Recap 1. Embrace the object
173. Recap 1. Embrace the object 2. Learn from those who came before you
174. Recap 1. Embrace the object 2. Learn from those who came before you 3. Play nice with others
175. Recap 1. Embrace the object 2. Learn from those who came before you 3. Play nice with others 4. Be lazy
176. Recap 1. Embrace the object 2. Learn from those who came before you 3. Play nice with others 4. Be lazy 5. Cover your butt
177. Advanced stuff
178. Exceptions
179. HHVM
180. Hack
181. Vagrant
182. Gitflow & PRs
183. Chef/Puppet/ Capistrano/Envoy
184. IRC (party like it’s 1999)
185. PHP 5.4 built in php server traits short array syntax function array dereferencing
186. PHP 5.5 generators try/catch/finally foreach(list) expressions as empty() args Array/string dereferencing classname via ::class (alias get_class)
187. PHP 5.6 Variadic functions Argument unpacking Constants assigned to expressions Import namespaced functions
191. Follow the FIG
192. One Final Note This is not what you “should do” because it’s nice. ! This is what you “should do” because if you do it your life will be better and you will make more money.
193. Writing modular, reusable code. Not reinventing the wheel. No lone cowboys. Learning from our peers & predecessors. Finding the bugs before the clients do. Having confidence to make changes in the future. Reducing code rot & technical debt. Making life easier. Thanks. @stauffermatt