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Informations about the package enum-php
PHP Enum
PHP >=7.1 only supported.
It's an abstract class that needs to be extended to use it.
What is an Enumeration?
In computer programming, an enumerated type (also called enumeration or enum) is a data type consisting of a set of named values called elements, members or enumerators of the type. The enumerator names are usually identifiers that behave as constants in the language. A variable that has been declared as having an enumerated type can be assigned any of the enumerators as a value. In other words, an enumerated type has values that are different from each other, and that can be compared and assigned, but which do not have any particular concrete representation in the computer's memory; compilers and interpreters can represent them arbitrarily.
Some advantages
When you using an enum instead of class constants, you take advantages of
- Type-hint : e.g. function setEnum(Enum $enum)
- Enrich your enum class with methods : e.g. first, format, ...
- Get all possibilities keys/values
Why this ?
Actually you can find others package offer PHP enum implementation, but this package have some advantage :
- Singleton : this package use singleton pattern
- Fast : Implemented small execution cache
- Right way : No circular referential
- Small : this package not needed an other to use
- Quality : PSR-2 standard
Installation
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Declaration
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Usage
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Type-hint
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Documentation
Get
$myEnum = MyEnumClass::ENUM_CONST()Return enum search by const name (method name)$myEnum = MyEnumClass::byValue(mixed $value, [optional] bool $strict)Return enum search by value$myEnum = MyEnumClass::byKey(string $constName)Return enum search by const name
Use
$myEnum->getValue() : mixedReturn value of enum$myEnum->getKey() : stringReturn string with const name$myEnum->getDescription() : stringReturn description annotation if is set or exception$myEnum->isEqual(Enum $myEnum) : boolCheck if enum is equal to anotherecho $myEnum : string__toString() have implemented to return cast of string value
Helper
MyEnumClass::getAll() : arrayReturn array with all MyEnum possibilitiesMyEnumClass::getValues() : arrayReturn simple associate array with key is const name and value is const valueMyEnumClass::isValidKey(string $testedValue) : boolCheck if tested value is valid const nameMyEnumClass::isValidValue($testValue, [optional] bool $strict) : boolCheck if tested value is valid const value
