Online PHP editor | rfc for XT7Tt

@ 2015-04-29T08:24:32Z

<?php

class User {
    private $id;
    private $username;
}

class Hydrator
{
    private $propertyMap = array();
    private $valueFilters = array();

    public function setPropertyMap(array $propertyMap)
    {
        $this->propertyMap = $propertyMap;
    }
    
    public function setValueFilters(array $filters)
    {
        $this->valueFilters = $filters;
    }

    public function generate()
    {
        $propertyMap  = $this->propertyMap;
        $valueFilters = $this->valueFilters;
        return function (array $row) use ($propertyMap, $valueFilters) {
            var_dump($this);
            foreach ($row as $k => $v) {
                $property = isset($propertyMap[$k]) ? $propertyMap[$k] : $k;
                $value    = isset($valueFilters[$k]) ? $valueFilters[$k]($v) : $v;
                $this->{$property} = $v;
            }
        };
    }
    
    public function hydrate($obj, array $data)
    {
        $fn = $this->generate()->bindTo($obj, $obj);
        $fn($data);
        return $obj;
    }
}

class MySqlUserMapper {
    public function fetchByUsername($username) {
        $row = array(
            'id'       => '1',
            'username' => $username,
        );
        $user = new User;
        $this->hydrate($user, $row);
        return $user;
    }
    
    private function hydrate(User $user, array $row) {
        static $hydrator;
        
        if (!$hydrator) {
            $hydrator = new Hydrator();
            $hydrator->setValueFilters(array(
                'id' => 'intval'
            ));
        }
        
        return $hydrator->hydrate($user, $row);
    }
}

$mapper = new MySqlUserMapper();
var_dump($mapper->fetchByUsername('mabe'));

Output for git.master, git.master_jit, rfc.property-hooks: object(User)#2 (2) { ["id":"User":private]=> NULL ["username":"User":private]=> NULL } object(User)#2 (2) { ["id":"User":private]=> string(1) "1" ["username":"User":private]=> string(4) "mabe" }

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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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