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PHP Koans

PHP Koans is heavily based on Greg Malcolm's Python Koans, which is based on Edgecase's Ruby Koans. Much credit to both projects. Thank you!

PHP Koans Screenshot

PHP Koans is an interactive tutorial for learning the PHP programming language by making tests pass.

Most tests are fixed by filling the missing parts of assert functions. Eg:

$this->assertEquals(__, 1+2);

which can be fixed by replacing the __ part with the appropriate code:

$this->assertEquals(3, 1+2);

Occasionally you will encounter some failing tests that are already filled out. In these cases, you will need to finish implementing some code to progress. For example, there is an exercise for writing some code that will tell you if a triangle is equilateral, isosceles or scalene.

As well as being a great way to learn some PHP, it is also a good way to get a taste of Test Driven Development (TDD).

Downloading PHP Koans

PHP Koans is available through git on Github:

https://github.com/akoebbe/php_koans

or

Download a zipped copy

Installing PHP Koans

Aside from downloading or checking out the latest version of PHP Koans, you need to install the PHP interpreter.

PHP Koans was written using PHP 7.1. It is recommended that you use PHP 7.1+, though it may work in earlier versions, don't hold your breath.

Only the command line interface (CLI) for PHP is needed as we will not be testing web development.

Windows

  1. Download the zipped binaries from https://windows.php.net/download/ (non-thread safe version is fine)

macOS

macOS bundles PHP, so you may not need to do anything depending on the version installed. To check which version you have open the Terminal app and type

php --version

If you see version 7.1 or higher, you're good to go! If not, then you will want to install a newer version with Homebrew.

Homebrew

  1. Go to https://brew.sh/
  2. Copy the command listed in the Install section and paste it into the Terminal app
  3. Follow the install instructions
  4. Run brew install php to install the latest version
  5. Open a new terminal window or run source ~/.bash_profile
  6. Run php --version, you should now see the latest version of PHP reported

Linux

If you are running Linux, you will use your distributions package manager to install PHP. A few common distribution methods:

Debian/Ubuntu (and variants)

apt-get install php-cli

Fedora

yum install php

If that version is outdated, you can use Remi's Repository to install a newer version. See section 2.1 on Remi's site

Arch

sudo pacman -S php

Dockerization

If you prefer not to install php in your system, you can use a docker container.

To build the image run a terminal, go to the php_koans folder and run:

docker build . -t 'php-koans'

Every time you want to execute the suite run:

docker run -ti php-koans

Getting Started

From a *nix terminal or windows command prompt go to the php_koans folder and run:

php contempate_koans

In my I fire up my Terminal app and run this:

PHP Koans Screenshot

Apparently, a test failed:

Failed asserting that false is true.

It also tells me exactly where the problem is, it's an assert on line 15 of .\koans\AssertKoans.php. This one is easy, just change FALSE to TRUE to make the test pass.

PHPUnit

This koans project uses Sebastian Bergmann's wonderful PHPUnit command (source code). The PHAR binary is included in this project for convenience and to lower the setup curve. It has been renamed from phpunit to contemplate_koans to fit with the theme of this project. See LICENSE_PHPUnit for the relevant license information.

Work in Progress

This project and document are a work in progress. There is still much to do and many people to thank. Please bear with me (and contribute!) as the project progresses.

These are the list of koans from Python Koans to be ported over to PHP Koans.

About

Learn PHP with Koans using PHPUnit

Resources

Readme
MIT license
Activity

Stars

1 star

Watchers

0 watching

Forks

0 forks
Report repository

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Contributors

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
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PHP Koans
PHP Koans is heavily based on Greg Malcolm's Python Koans, which is based on Edgecase's Ruby Koans. Much credit to both projects. Thank you!
PHP Koans Screenshot
PHP Koans is an interactive tutorial for learning the PHP programming language by making tests pass.
Most tests are fixed by filling the missing parts of assert functions. Eg:
$this->assertEquals(__, 1+2);
which can be fixed by replacing the __ part with the appropriate code:
$this->assertEquals(3, 1+2);
Occasionally you will encounter some failing tests that are already filled out. In these cases, you will need to finish implementing some code to progress. For example, there is an exercise for writing some code that will tell you if a triangle is equilateral, isosceles or scalene.
As well as being a great way to learn some PHP, it is also a good way to get a taste of Test Driven Development (TDD).
Downloading PHP Koans
PHP Koans is available through git on Github:
https://github.com/akoebbe/php_koans
or
Download a zipped copy
Installing PHP Koans
Aside from downloading or checking out the latest version of PHP Koans, you need to install the PHP interpreter.
PHP Koans was written using PHP 7.1. It is recommended that you use PHP 7.1+, though it may work in earlier versions, don't hold your breath.
Only the command line interface (CLI) for PHP is needed as we will not be testing web development.
Windows
  1. Download the zipped binaries from https://windows.php.net/download/ (non-thread safe version is fine)
macOS
macOS bundles PHP, so you may not need to do anything depending on the version installed. To check which version you have open the Terminal app and type
php --version

If you see version 7.1 or higher, you're good to go! If not, then you will want to install a newer version with Homebrew.
Homebrew
  1. Go to https://brew.sh/
  2. Copy the command listed in the Install section and paste it into the Terminal app
  3. Follow the install instructions
  4. Run brew install php to install the latest version
  5. Open a new terminal window or run source ~/.bash_profile
  6. Run php --version, you should now see the latest version of PHP reported
Linux
If you are running Linux, you will use your distributions package manager to install PHP. A few common distribution methods:
Debian/Ubuntu (and variants)
apt-get install php-cli

Fedora
yum install php

If that version is outdated, you can use Remi's Repository to install a newer version. See section 2.1 on Remi's site
Arch
sudo pacman -S php

Dockerization
If you prefer not to install php in your system, you can use a docker container.
To build the image run a terminal, go to the php_koans folder and run:
docker build . -t 'php-koans'

Every time you want to execute the suite run:
docker run -ti php-koans

Getting Started
From a *nix terminal or windows command prompt go to the php_koans folder and run:
php contempate_koans

In my I fire up my Terminal app and run this:
PHP Koans Screenshot
Apparently, a test failed:
Failed asserting that false is true.

It also tells me exactly where the problem is, it's an assert on line 15 of .\koans\AssertKoans.php. This one is easy, just change FALSE to TRUE to make the test pass.
PHPUnit
This koans project uses Sebastian Bergmann's wonderful PHPUnit command (source code). The PHAR binary is included in this project for convenience and to lower the setup curve. It has been renamed from phpunit to contemplate_koans to fit with the theme of this project. See LICENSE_PHPUnit for the relevant license information.
Work in Progress
This project and document are a work in progress. There is still much to do and many people to thank. Please bear with me (and contribute!) as the project progresses.
These are the list of koans from Python Koans to be ported over to PHP Koans.
About
Learn PHP with Koans using PHPUnit
Resources
Readme
MIT license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
PHP Koans
PHP Koans is heavily based on Greg Malcolm's Python Koans, which is based on Edgecase's Ruby Koans. Much credit to both projects. Thank you!
PHP Koans Screenshot
PHP Koans is an interactive tutorial for learning the PHP programming language by making tests pass.
Most tests are fixed by filling the missing parts of assert functions. Eg:
$this->assertEquals(__, 1+2);
which can be fixed by replacing the __ part with the appropriate code:
$this->assertEquals(3, 1+2);
Occasionally you will encounter some failing tests that are already filled out. In these cases, you will need to finish implementing some code to progress. For example, there is an exercise for writing some code that will tell you if a triangle is equilateral, isosceles or scalene.
As well as being a great way to learn some PHP, it is also a good way to get a taste of Test Driven Development (TDD).
Downloading PHP Koans
PHP Koans is available through git on Github:
https://github.com/akoebbe/php_koans
or
Download a zipped copy
Installing PHP Koans
Aside from downloading or checking out the latest version of PHP Koans, you need to install the PHP interpreter.
PHP Koans was written using PHP 7.1. It is recommended that you use PHP 7.1+, though it may work in earlier versions, don't hold your breath.
Only the command line interface (CLI) for PHP is needed as we will not be testing web development.
Windows
  1. Download the zipped binaries from https://windows.php.net/download/ (non-thread safe version is fine)
macOS
macOS bundles PHP, so you may not need to do anything depending on the version installed. To check which version you have open the Terminal app and type
php --version

If you see version 7.1 or higher, you're good to go! If not, then you will want to install a newer version with Homebrew.
Homebrew
  1. Go to https://brew.sh/
  2. Copy the command listed in the Install section and paste it into the Terminal app
  3. Follow the install instructions
  4. Run brew install php to install the latest version
  5. Open a new terminal window or run source ~/.bash_profile
  6. Run php --version, you should now see the latest version of PHP reported
Linux
If you are running Linux, you will use your distributions package manager to install PHP. A few common distribution methods:
Debian/Ubuntu (and variants)
apt-get install php-cli

Fedora
yum install php

If that version is outdated, you can use Remi's Repository to install a newer version. See section 2.1 on Remi's site
Arch
sudo pacman -S php

Dockerization
If you prefer not to install php in your system, you can use a docker container.
To build the image run a terminal, go to the php_koans folder and run:
docker build . -t 'php-koans'

Every time you want to execute the suite run:
docker run -ti php-koans

Getting Started
From a *nix terminal or windows command prompt go to the php_koans folder and run:
php contempate_koans

In my I fire up my Terminal app and run this:
PHP Koans Screenshot
Apparently, a test failed:
Failed asserting that false is true.

It also tells me exactly where the problem is, it's an assert on line 15 of .\koans\AssertKoans.php. This one is easy, just change FALSE to TRUE to make the test pass.
PHPUnit
This koans project uses Sebastian Bergmann's wonderful PHPUnit command (source code). The PHAR binary is included in this project for convenience and to lower the setup curve. It has been renamed from phpunit to contemplate_koans to fit with the theme of this project. See LICENSE_PHPUnit for the relevant license information.
Work in Progress
This project and document are a work in progress. There is still much to do and many people to thank. Please bear with me (and contribute!) as the project progresses.
These are the list of koans from Python Koans to be ported over to PHP Koans.
About
Learn PHP with Koans using PHPUnit
Resources
Readme
MIT license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
PHP Koans
PHP Koans is heavily based on Greg Malcolm's Python Koans, which is based on Edgecase's Ruby Koans. Much credit to both projects. Thank you!
PHP Koans Screenshot
PHP Koans is an interactive tutorial for learning the PHP programming language by making tests pass.
Most tests are fixed by filling the missing parts of assert functions. Eg:
$this->assertEquals(__, 1+2);
which can be fixed by replacing the __ part with the appropriate code:
$this->assertEquals(3, 1+2);
Occasionally you will encounter some failing tests that are already filled out. In these cases, you will need to finish implementing some code to progress. For example, there is an exercise for writing some code that will tell you if a triangle is equilateral, isosceles or scalene.
As well as being a great way to learn some PHP, it is also a good way to get a taste of Test Driven Development (TDD).
Downloading PHP Koans
PHP Koans is available through git on Github:
https://github.com/akoebbe/php_koans
or
Download a zipped copy
Installing PHP Koans
Aside from downloading or checking out the latest version of PHP Koans, you need to install the PHP interpreter.
PHP Koans was written using PHP 7.1. It is recommended that you use PHP 7.1+, though it may work in earlier versions, don't hold your breath.
Only the command line interface (CLI) for PHP is needed as we will not be testing web development.
Windows
  1. Download the zipped binaries from https://windows.php.net/download/ (non-thread safe version is fine)
macOS
macOS bundles PHP, so you may not need to do anything depending on the version installed. To check which version you have open the Terminal app and type
php --version

If you see version 7.1 or higher, you're good to go! If not, then you will want to install a newer version with Homebrew.
Homebrew
  1. Go to https://brew.sh/
  2. Copy the command listed in the Install section and paste it into the Terminal app
  3. Follow the install instructions
  4. Run brew install php to install the latest version
  5. Open a new terminal window or run source ~/.bash_profile
  6. Run php --version, you should now see the latest version of PHP reported
Linux
If you are running Linux, you will use your distributions package manager to install PHP. A few common distribution methods:
Debian/Ubuntu (and variants)
apt-get install php-cli

Fedora
yum install php

If that version is outdated, you can use Remi's Repository to install a newer version. See section 2.1 on Remi's site
Arch
sudo pacman -S php

Dockerization
If you prefer not to install php in your system, you can use a docker container.
To build the image run a terminal, go to the php_koans folder and run:
docker build . -t 'php-koans'

Every time you want to execute the suite run:
docker run -ti php-koans

Getting Started
From a *nix terminal or windows command prompt go to the php_koans folder and run:
php contempate_koans

In my I fire up my Terminal app and run this:
PHP Koans Screenshot
Apparently, a test failed:
Failed asserting that false is true.

It also tells me exactly where the problem is, it's an assert on line 15 of .\koans\AssertKoans.php. This one is easy, just change FALSE to TRUE to make the test pass.
PHPUnit
This koans project uses Sebastian Bergmann's wonderful PHPUnit command (source code). The PHAR binary is included in this project for convenience and to lower the setup curve. It has been renamed from phpunit to contemplate_koans to fit with the theme of this project. See LICENSE_PHPUnit for the relevant license information.
Work in Progress
This project and document are a work in progress. There is still much to do and many people to thank. Please bear with me (and contribute!) as the project progresses.
These are the list of koans from Python Koans to be ported over to PHP Koans.
About
Learn PHP with Koans using PHPUnit
Resources
Readme
MIT license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
PHP Koans
PHP Koans is heavily based on Greg Malcolm's Python Koans, which is based on Edgecase's Ruby Koans. Much credit to both projects. Thank you!
PHP Koans Screenshot
PHP Koans is an interactive tutorial for learning the PHP programming language by making tests pass.
Most tests are fixed by filling the missing parts of assert functions. Eg:
$this->assertEquals(__, 1+2);
which can be fixed by replacing the __ part with the appropriate code:
$this->assertEquals(3, 1+2);
Occasionally you will encounter some failing tests that are already filled out. In these cases, you will need to finish implementing some code to progress. For example, there is an exercise for writing some code that will tell you if a triangle is equilateral, isosceles or scalene.
As well as being a great way to learn some PHP, it is also a good way to get a taste of Test Driven Development (TDD).
Downloading PHP Koans
PHP Koans is available through git on Github:
https://github.com/akoebbe/php_koans
or
Download a zipped copy
Installing PHP Koans
Aside from downloading or checking out the latest version of PHP Koans, you need to install the PHP interpreter.
PHP Koans was written using PHP 7.1. It is recommended that you use PHP 7.1+, though it may work in earlier versions, don't hold your breath.
Only the command line interface (CLI) for PHP is needed as we will not be testing web development.
Windows
  1. Download the zipped binaries from https://windows.php.net/download/ (non-thread safe version is fine)
macOS
macOS bundles PHP, so you may not need to do anything depending on the version installed. To check which version you have open the Terminal app and type
php --version

If you see version 7.1 or higher, you're good to go! If not, then you will want to install a newer version with Homebrew.
Homebrew
  1. Go to https://brew.sh/
  2. Copy the command listed in the Install section and paste it into the Terminal app
  3. Follow the install instructions
  4. Run brew install php to install the latest version
  5. Open a new terminal window or run source ~/.bash_profile
  6. Run php --version, you should now see the latest version of PHP reported
Linux
If you are running Linux, you will use your distributions package manager to install PHP. A few common distribution methods:
Debian/Ubuntu (and variants)
apt-get install php-cli

Fedora
yum install php

If that version is outdated, you can use Remi's Repository to install a newer version. See section 2.1 on Remi's site
Arch
sudo pacman -S php

Dockerization
If you prefer not to install php in your system, you can use a docker container.
To build the image run a terminal, go to the php_koans folder and run:
docker build . -t 'php-koans'

Every time you want to execute the suite run:
docker run -ti php-koans

Getting Started
From a *nix terminal or windows command prompt go to the php_koans folder and run:
php contempate_koans

In my I fire up my Terminal app and run this:
PHP Koans Screenshot
Apparently, a test failed:
Failed asserting that false is true.

It also tells me exactly where the problem is, it's an assert on line 15 of .\koans\AssertKoans.php. This one is easy, just change FALSE to TRUE to make the test pass.
PHPUnit
This koans project uses Sebastian Bergmann's wonderful PHPUnit command (source code). The PHAR binary is included in this project for convenience and to lower the setup curve. It has been renamed from phpunit to contemplate_koans to fit with the theme of this project. See LICENSE_PHPUnit for the relevant license information.
Work in Progress
This project and document are a work in progress. There is still much to do and many people to thank. Please bear with me (and contribute!) as the project progresses.
These are the list of koans from Python Koans to be ported over to PHP Koans.
About
Learn PHP with Koans using PHPUnit
Resources
Readme
MIT license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
PHP Koans
PHP Koans is heavily based on Greg Malcolm's Python Koans, which is based on Edgecase's Ruby Koans. Much credit to both projects. Thank you!
PHP Koans Screenshot
PHP Koans is an interactive tutorial for learning the PHP programming language by making tests pass.
Most tests are fixed by filling the missing parts of assert functions. Eg:
$this->assertEquals(__, 1+2);
which can be fixed by replacing the __ part with the appropriate code:
$this->assertEquals(3, 1+2);
Occasionally you will encounter some failing tests that are already filled out. In these cases, you will need to finish implementing some code to progress. For example, there is an exercise for writing some code that will tell you if a triangle is equilateral, isosceles or scalene.
As well as being a great way to learn some PHP, it is also a good way to get a taste of Test Driven Development (TDD).
Downloading PHP Koans
PHP Koans is available through git on Github:
https://github.com/akoebbe/php_koans
or
Download a zipped copy
Installing PHP Koans
Aside from downloading or checking out the latest version of PHP Koans, you need to install the PHP interpreter.
PHP Koans was written using PHP 7.1. It is recommended that you use PHP 7.1+, though it may work in earlier versions, don't hold your breath.
Only the command line interface (CLI) for PHP is needed as we will not be testing web development.
Windows
  1. Download the zipped binaries from https://windows.php.net/download/ (non-thread safe version is fine)
macOS
macOS bundles PHP, so you may not need to do anything depending on the version installed. To check which version you have open the Terminal app and type
php --version

If you see version 7.1 or higher, you're good to go! If not, then you will want to install a newer version with Homebrew.
Homebrew
  1. Go to https://brew.sh/
  2. Copy the command listed in the Install section and paste it into the Terminal app
  3. Follow the install instructions
  4. Run brew install php to install the latest version
  5. Open a new terminal window or run source ~/.bash_profile
  6. Run php --version, you should now see the latest version of PHP reported
Linux
If you are running Linux, you will use your distributions package manager to install PHP. A few common distribution methods:
Debian/Ubuntu (and variants)
apt-get install php-cli

Fedora
yum install php

If that version is outdated, you can use Remi's Repository to install a newer version. See section 2.1 on Remi's site
Arch
sudo pacman -S php

Dockerization
If you prefer not to install php in your system, you can use a docker container.
To build the image run a terminal, go to the php_koans folder and run:
docker build . -t 'php-koans'

Every time you want to execute the suite run:
docker run -ti php-koans

Getting Started
From a *nix terminal or windows command prompt go to the php_koans folder and run:
php contempate_koans

In my I fire up my Terminal app and run this:
PHP Koans Screenshot
Apparently, a test failed:
Failed asserting that false is true.

It also tells me exactly where the problem is, it's an assert on line 15 of .\koans\AssertKoans.php. This one is easy, just change FALSE to TRUE to make the test pass.
PHPUnit
This koans project uses Sebastian Bergmann's wonderful PHPUnit command (source code). The PHAR binary is included in this project for convenience and to lower the setup curve. It has been renamed from phpunit to contemplate_koans to fit with the theme of this project. See LICENSE_PHPUnit for the relevant license information.
Work in Progress
This project and document are a work in progress. There is still much to do and many people to thank. Please bear with me (and contribute!) as the project progresses.
These are the list of koans from Python Koans to be ported over to PHP Koans.
About
Learn PHP with Koans using PHPUnit
Resources
Readme
MIT license
Activity
Stars
1 star
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0 watching
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
PHP Koans
PHP Koans is heavily based on Greg Malcolm's Python Koans, which is based on Edgecase's Ruby Koans. Much credit to both projects. Thank you!
PHP Koans Screenshot
PHP Koans is an interactive tutorial for learning the PHP programming language by making tests pass.
Most tests are fixed by filling the missing parts of assert functions. Eg:
$this->assertEquals(__, 1+2);
which can be fixed by replacing the __ part with the appropriate code:
$this->assertEquals(3, 1+2);
Occasionally you will encounter some failing tests that are already filled out. In these cases, you will need to finish implementing some code to progress. For example, there is an exercise for writing some code that will tell you if a triangle is equilateral, isosceles or scalene.
As well as being a great way to learn some PHP, it is also a good way to get a taste of Test Driven Development (TDD).
Downloading PHP Koans
PHP Koans is available through git on Github:
https://github.com/akoebbe/php_koans
or
Download a zipped copy
Installing PHP Koans
Aside from downloading or checking out the latest version of PHP Koans, you need to install the PHP interpreter.
PHP Koans was written using PHP 7.1. It is recommended that you use PHP 7.1+, though it may work in earlier versions, don't hold your breath.
Only the command line interface (CLI) for PHP is needed as we will not be testing web development.
Windows
  1. Download the zipped binaries from https://windows.php.net/download/ (non-thread safe version is fine)
macOS
macOS bundles PHP, so you may not need to do anything depending on the version installed. To check which version you have open the Terminal app and type
php --version

If you see version 7.1 or higher, you're good to go! If not, then you will want to install a newer version with Homebrew.
Homebrew
  1. Go to https://brew.sh/
  2. Copy the command listed in the Install section and paste it into the Terminal app
  3. Follow the install instructions
  4. Run brew install php to install the latest version
  5. Open a new terminal window or run source ~/.bash_profile
  6. Run php --version, you should now see the latest version of PHP reported
Linux
If you are running Linux, you will use your distributions package manager to install PHP. A few common distribution methods:
Debian/Ubuntu (and variants)
apt-get install php-cli

Fedora
yum install php

If that version is outdated, you can use Remi's Repository to install a newer version. See section 2.1 on Remi's site
Arch
sudo pacman -S php

Dockerization
If you prefer not to install php in your system, you can use a docker container.
To build the image run a terminal, go to the php_koans folder and run:
docker build . -t 'php-koans'

Every time you want to execute the suite run:
docker run -ti php-koans

Getting Started
From a *nix terminal or windows command prompt go to the php_koans folder and run:
php contempate_koans

In my I fire up my Terminal app and run this:
PHP Koans Screenshot
Apparently, a test failed:
Failed asserting that false is true.

It also tells me exactly where the problem is, it's an assert on line 15 of .\koans\AssertKoans.php. This one is easy, just change FALSE to TRUE to make the test pass.
PHPUnit
This koans project uses Sebastian Bergmann's wonderful PHPUnit command (source code). The PHAR binary is included in this project for convenience and to lower the setup curve. It has been renamed from phpunit to contemplate_koans to fit with the theme of this project. See LICENSE_PHPUnit for the relevant license information.
Work in Progress
This project and document are a work in progress. There is still much to do and many people to thank. Please bear with me (and contribute!) as the project progresses.
These are the list of koans from Python Koans to be ported over to PHP Koans.
About
Learn PHP with Koans using PHPUnit
Resources
Readme
MIT license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
PHP Koans
PHP Koans is heavily based on Greg Malcolm's Python Koans, which is based on Edgecase's Ruby Koans. Much credit to both projects. Thank you!
PHP Koans Screenshot
PHP Koans is an interactive tutorial for learning the PHP programming language by making tests pass.
Most tests are fixed by filling the missing parts of assert functions. Eg:
$this->assertEquals(__, 1+2);
which can be fixed by replacing the __ part with the appropriate code:
$this->assertEquals(3, 1+2);
Occasionally you will encounter some failing tests that are already filled out. In these cases, you will need to finish implementing some code to progress. For example, there is an exercise for writing some code that will tell you if a triangle is equilateral, isosceles or scalene.
As well as being a great way to learn some PHP, it is also a good way to get a taste of Test Driven Development (TDD).
Downloading PHP Koans
PHP Koans is available through git on Github:
https://github.com/akoebbe/php_koans
or
Download a zipped copy
Installing PHP Koans
Aside from downloading or checking out the latest version of PHP Koans, you need to install the PHP interpreter.
PHP Koans was written using PHP 7.1. It is recommended that you use PHP 7.1+, though it may work in earlier versions, don't hold your breath.
Only the command line interface (CLI) for PHP is needed as we will not be testing web development.
Windows
  1. Download the zipped binaries from https://windows.php.net/download/ (non-thread safe version is fine)
macOS
macOS bundles PHP, so you may not need to do anything depending on the version installed. To check which version you have open the Terminal app and type
php --version

If you see version 7.1 or higher, you're good to go! If not, then you will want to install a newer version with Homebrew.
Homebrew
  1. Go to https://brew.sh/
  2. Copy the command listed in the Install section and paste it into the Terminal app
  3. Follow the install instructions
  4. Run brew install php to install the latest version
  5. Open a new terminal window or run source ~/.bash_profile
  6. Run php --version, you should now see the latest version of PHP reported
Linux
If you are running Linux, you will use your distributions package manager to install PHP. A few common distribution methods:
Debian/Ubuntu (and variants)
apt-get install php-cli

Fedora
yum install php

If that version is outdated, you can use Remi's Repository to install a newer version. See section 2.1 on Remi's site
Arch
sudo pacman -S php

Dockerization
If you prefer not to install php in your system, you can use a docker container.
To build the image run a terminal, go to the php_koans folder and run:
docker build . -t 'php-koans'

Every time you want to execute the suite run:
docker run -ti php-koans

Getting Started
From a *nix terminal or windows command prompt go to the php_koans folder and run:
php contempate_koans

In my I fire up my Terminal app and run this:
PHP Koans Screenshot
Apparently, a test failed:
Failed asserting that false is true.

It also tells me exactly where the problem is, it's an assert on line 15 of .\koans\AssertKoans.php. This one is easy, just change FALSE to TRUE to make the test pass.
PHPUnit
This koans project uses Sebastian Bergmann's wonderful PHPUnit command (source code). The PHAR binary is included in this project for convenience and to lower the setup curve. It has been renamed from phpunit to contemplate_koans to fit with the theme of this project. See LICENSE_PHPUnit for the relevant license information.
Work in Progress
This project and document are a work in progress. There is still much to do and many people to thank. Please bear with me (and contribute!) as the project progresses.
These are the list of koans from Python Koans to be ported over to PHP Koans.
About
Learn PHP with Koans using PHPUnit
Resources
Readme
MIT license
Activity
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages