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@ 2021-05-04T20:49:06Z

<?php

trait Singleton
{
    private static ?object $instance = null;

    public static function GetInstance(): object {
        // Reflection better here for Dependency Injection into the instance
        return self::$instance ?? (self::$instance = new self());
    }

    public function __set(string $property, string $value) {
        $this->{$property} = $value;
    }
    
    public function __get(string $property): mixed {
        return $this->{$property} ?? null;
    }
    
    protected function __construct() {}
    private   function __clone() {}
}

class User
{
    use Singleton;
    
    protected function __construct() {
        // Change this to the select inner join query
        foreach(['id' => 1, 'column' => 'test', 'points' => 3] as $column => $value)
            $this->$column = $value;
    }
    
    public function save(): mixed {
        // Change this to an update query
        return get_object_vars($this);
    }
}

User::getInstance()->points = 5; // Dynamically change values
var_dump(User::getInstance()->save()); // Then update

Output for git.master, git.master_jit, rfc.property-hooks: Deprecated: Creation of dynamic property User::$id is deprecated in /in/3WrMs on line 13 Deprecated: Creation of dynamic property User::$column is deprecated in /in/3WrMs on line 13 Deprecated: Creation of dynamic property User::$points is deprecated in /in/3WrMs on line 13 array(3) { ["id"]=> string(1) "1" ["column"]=> string(4) "test" ["points"]=> int(5) }

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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