Release 2.0.0-BETA3 · Ocramius/ProxyManager

This is the third beta release of the 2.0.0 series.

Users are encouraged to try this new version, and to verify if there are any BC breaks other than the documented ones.

You can install this component by running:

composer require ocramius/proxy-manager:2.0.0-BETA3@BETA

New features

PHP 7 support

ProxyManager will now correctly operate in PHP 7 environments.

PHP 7 Return type hints

ProxyManager will now correctly mimic signatures of methods with return type hints:

class SayHello
{
    public function hello() : string
    {
        return 'hello!';
    }
}

PHP 7 Scalar type hints

ProxyManager will now correctly mimic signatures of methods with scalar type hints

class SayHello
{
    public function hello(string $name) : string
    {
        return 'hello, ' . $name;
    }
}

PHP 5.6 Variadics support

ProxyManager will now correctly mimic behavior of methods with variadic parameters:

class SayHello
{
    public function hello(string ...$names) : string
    {
        return 'hello, ' . implode(', ', $names);
    }
}

By-ref variadic arguments are also supported:

class SayHello
{
    public function hello(string ... & $names)
    {
        foreach ($names as & $name) {
            $name = 'hello, ' . $name;
        }
    }
}

Constructors in proxies are not replaced anymore

In ProxyManager v1.x, the constructor of a proxy was completely replaced with a method
accepting proxy-specific parameters.

This is no longer true, and you will be able to use the constructor of your objects as
if the class wasn't proxied at all:

class SayHello
{
    public function __construct()
    {
        echo 'Hello!';
    }
}

/* @var $proxyGenerator \ProxyManager\ProxyGenerator\ProxyGeneratorInterface */
$proxyClass = $proxyGenerator->generateProxy(
    new ReflectionClass(SayHello::class),
    new ClassGenerator('ProxyClassName')
);

eval('<?php ' . $proxyClass->generate());

$proxyName = $proxyClass->getName();
$object = new ProxyClassName(); // echoes "Hello!"

var_dump($object); // a proxy object

If you still want to manually build a proxy (without factories), a
public static staticProxyConstructor method is added to the generated proxy classes.

Friend classes support

You can now access state of "friend objects" at any time.

class EmailAddress
{
    private $address;

    public function __construct(string $address)
    {
        assertEmail($address);

        $this->address = $address;
    }

    public function equalsTo(EmailAddress $other)
    {
        return $this->address === $other->address;
    }
}

When using lazy-loading or access-interceptors, the equalsTo method will
properly work, as even protected and private access are now correctly proxied.

Ghost objects now only lazy-load on state-access

Lazy loading ghost objects now trigger lazy-loading only when their state is accessed.
This also implies that lazy loading ghost objects cannot be used with interfaces anymore.

class AccessPolicy
{
    private $policyName;

    /**
     * Calling this method WILL cause lazy-loading, when using a ghost object,
     * as the method is accessing the object's state
     */
    public function getPolicyName() : string
    {
        return $this->policyName;        
    }

    /**
     * Calling this method WILL NOT cause lazy-loading, when using a ghost object,
     * as the method is not reading any from the object.
     */
    public function allowAccess() : bool
    {
        return false;
    }
}

Faster ghost object state initialization

Lazy loading ghost objects can now be initialized in a more efficient way, by avoiding
reflection or setters:

class Foo
{
    private $a;
    protected $b;
    public $c;
}

$factory = new \ProxyManager\Factory\LazyLoadingGhostFactory();

$proxy = $factory-createProxy(
    Foo::class,
    function (
        GhostObjectInterface $proxy, 
        string $method, 
        array $parameters, 
        & $initializer,
        array $properties
    ) {
        $initializer   = null;

        $properties["\0Foo\0a"] = 'abc';
        $properties["\0*\0b"]   = 'def';
        $properties['c']        = 'ghi';

        return true;
    }
);


$reflectionA = new ReflectionProperty(Foo::class, 'a');
$reflectionA->setAccessible(true);

var_dump($reflectionA->getValue($proxy)); // dumps "abc"

$reflectionB = new ReflectionProperty(Foo::class, 'b');
$reflectionB->setAccessible(true);

var_dump($reflectionB->getValue($proxy)); // dumps "def"

var_dump($proxy->c); // dumps "ghi"

Skipping lazy-loaded properties in generated proxies

Lazy loading ghost objects can now skip lazy-loading for certain properties.
This is especially useful when you have properties that are always available,
such as identifiers of entities:

class User
{
    private $id;
    private $username;

    public function getId() : int
    {
        return $this->id;
    }

    public function getUsername() : string
    {
        return $this->username;
    }
}

/* @var $proxy User */
$proxy = (new \ProxyManager\Factory\LazyLoadingGhostFactory())->createProxy(
    User::class,
    function (
        GhostObjectInterface $proxy,
        string $method,
        array $parameters,
        & $initializer,
        array $properties
    ) {
        $initializer   = null;

        var_dump('Triggered lazy-loading!');

        $properties["\0User\0username"] = 'Ocramius';

        return true;
    },
    [
        'skippedProperties' => [
            "\0User\0id",
        ],
    ]
);

$idReflection = new \ReflectionProperty(User::class, 'id');

$idReflection->setAccessible(true);
$idReflection->setValue($proxy, 123);

var_dump($proxy->getId());       // 123
var_dump($proxy->getUsername()); // "Triggered lazy-loading!", then "Ocramius"

Proxies are now always generated on-the-fly by default

Proxies are now automatically generated any time you require them: no configuration
needed. If you want to gain better performance, you may still want to read
the tuning for production docs.

Proxy names are now hashed, simplified signature is attached to them

Proxy classes now have shorter names, as the parameters used to generate them are
hashed into their name. A signature is attached to proxy classes (as a private static
property) so that proxy classes aren't re-used across library updates.
Upgrading ProxyManager will now cause all proxies to be re-generated automatically,
while the old proxy files are going to be ignored.

BC Breaks - backwards-incompatible changes

PHP ~7.0 is now required to use ProxyManager
HHVM compatibility is not guaranteed, as HHVM is not yet PHP 7 compliant
All classes and interfaces now use strict scalar type hints.
If you extended or implemented anything from the ProxyManager\ namespace, you probably need to change
that code to adapt it to the new signature.
All classes and interfaces now use return type declarations.
If you extended or implemented anything from the ProxyManager\ namespace, you probably need to change
that code to adapt it to the new signature.
ProxyManager will no longer write proxies to disk by default:
the EvaluatingGeneratorStrategy is used instead.
If you still want ProxyManager to write files to disk, please refer to the tuning for production docs
Ghost objects were entirely rewritten, for better support and improved performance. Lazy-loading is not
triggered by public API access, but by property access (private and public). While this is not really a BC
break, you are encouraged to check your applications if you rely on ghost objects.
If ProxyManager can't find a proxy, it will now automatically attempt to auto-generate it, regardless of
the settings passed to it.
ProxyManager\Configuration#setAutoGenerateProxies() was removed. Please look for calls to this method and
remove them.
Private properties are now also correctly handled by ProxyManager: accessing proxy state via friend classes
(protected or private scope) does not require any particular workarounds anymore.
ProxyManager\Version::VERSION was removed. Please use ProxyManager\Version::getVersion() instead.
PHP 4 style constructors are no longer supported

Changes (raw log)

Total issues resolved: 65

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2.0.0-BETA3