Online PHP editor | output for YZ6En

@ 2015-04-02T09:08:16Z

<?php

namespace Derp;

abstract class Enum
{
    protected $value;

    protected static $possibleValues;

    protected static function getPossibleValues()
    {
        if (static::$possibleValues) {
            return static::$possibleValues;
        }

        $reflectionClass = new \ReflectionClass(get_called_class());
        static::$possibleValues = $reflectionClass->getConstants();

        return static::$possibleValues;
    }

    /**
     * @param $name
     * @param $arguments
     * @return static
     * @throws \Exception
     */
    public static function __callStatic($name, $arguments)
    {
        $possibleValues = static::getPossibleValues();
        if (!array_key_exists($name, $possibleValues)) {
            throw new \Exception;
        }

        if (count($arguments) > 0) {
            throw new \Exception;
        }

        return self::createInstance($name, $possibleValues[$name]);
    }

    /**
     * @param $value
     * @return static
     */
    protected static function createInstance($value)
    {
        $enum = new static;
        $enum->value = $value;
        return $enum;
    }

    protected function getValue()
    {
        return $this->value;
    }

    public function equals(Enum $otherValue)
    {
        return get_class($otherValue) === get_called_class() && $otherValue->getValue() === $this->getValue();
    }

    public static function all()
    {
        return array_map(
            function($value) {
                return static::createInstance($value);
            },
            static::getPossibleValues()
        );
    }
}


class Day extends Enum
{
    const MONDAY = 'monday';

    const FRIDAY = 'friday';
}

$monday = Day::MONDAY();

var_dump($monday->equals(Day::FRIDAY()));
var_dump(Day::all());

Output for 5.4.30 - 5.4.45, 5.5.14 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: bool(false) array(2) { ["MONDAY"]=> object(Derp\Day)#3 (1) { ["value":protected]=> string(6) "monday" } ["FRIDAY"]=> object(Derp\Day)#4 (1) { ["value":protected]=> string(6) "friday" } }
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 bool(false) array(2) { ["MONDAY"]=> object(Derp\Day)#3 (1) { ["value":protected]=> string(6) "monday" } ["FRIDAY"]=> object(Derp\Day)#4 (1) { ["value":protected]=> string(6) "friday" } }
Output for 5.4.0 - 5.4.29, 5.5.0 - 5.5.13: bool(false) Fatal error: Cannot instantiate abstract class Derp\Enum in /in/YZ6En on line 49
Process exited with code 255.
Output for 5.3.0 - 5.3.29: bool(false) Fatal error: Cannot access static:: when no class scope is active in /in/YZ6En on line 68
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_STRING in /in/YZ6En on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_STRING in /in/YZ6En on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/YZ6En on line 3
Process exited with code 255.

preferences:dark modelive preview