webinarium / php-dictionary
Static dictionary implementation for PHP
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Requires
- php: >=7.4
Requires (Dev)
- friendsofphp/php-cs-fixer: ^2.16
- phpunit/phpunit: ^7.0
README
Static dictionary implementation for PHP
Requirements
PHP needs to be a minimum version of PHP 7.4.
Installation
The recommended way to install is via Composer:
composer require webinarium/php-dictionary
Usage
To create custom dictionary you have to extend StaticDictionary
class and override the $dictionary
static array.
After that you can use StaticDictionaryInterface
to work with your dictionary.
Example dictionary:
namespace Dictionary; class Color extends StaticDictionary { public const BLACK = 'Black'; public const BLUE = 'Blue'; public const GREEN = 'Green'; public const CYAN = 'Cyan'; public const RED = 'Red'; public const MAGENTA = 'Magenta'; public const YELLOW = 'Yellow'; public const WHITE = 'White'; protected static array $dictionary = [ self::BLACK => '#000000', self::BLUE => '#0000FF', self::GREEN => '#00FF00', self::CYAN => '#00FFFF', self::RED => '#FF0000', self::MAGENTA => '#FF00FF', self::YELLOW => '#FFFF00', self::WHITE => '#FFFFFF', ]; }
Input sanitizing:
public function setColor($color) { if (Dictionary\Color::has($color)) { $this->color = $color; } }
Symfony validation:
use Symfony\Component\Validator\Constraints; class Settings { /** * @Constraints\NotNull() * @Constraints\Choice(callback = {"Dictionary\Color", "keys"}) */ public $color; }
Symfony form:
class ColorType extends AbstractType { /** * {@inheritdoc} */ public function buildForm(FormBuilderInterface $builder, array $options) { $builder->add('color', ChoiceType::class, [ 'label' => 'color', 'choices' => array_flip(Dictionary\Color::all()), ]); } }
Please note, if you try to get a value from your dictionary using non-existing key, you will get NULL
without any failures or warnings.
Sometimes it's useful to have a default fallback value to be returned instead of NULL
.
This can be done by defining a FALLBACK
constant in your dictionary class:
class Shell extends StaticDictionary { public const FALLBACK = self::UNITY; public const XFCE = 1; public const KDE = 2; public const GNOME = 3; public const LXDE = 4; public const UNITY = 5; public const MATE = 6; protected static array $dictionary = [ self::UNITY => 'Unity', self::GNOME => 'Gnome', self::KDE => 'KDE', self::LXDE => 'LXDE', self::XFCE => 'Xfce', self::MATE => 'MATE', ]; } // This returns 'Gnome' Shell::get(Shell::GNOME); // This returns 'Unity' Shell::get(Color::BLACK);
If your dictionary should be built in run-time, you may skip the $dictionary
static array and overload dictionary()
static function instead of that:
class Timezone extends StaticDictionary { const FALLBACK = 'UTC'; protected static function dictionary(): array { return timezone_identifiers_list(); } }
Development
./bin/php-cs-fixer fix XDEBUG_MODE=coverage ./bin/phpunit --coverage-text