Online PHP editor | output for 8I4Tb

@ 2013-10-24T15:08:23Z

<?php

class Proxy
{

    private $object;
    private $onEnter = [];
    private $onLeave = [];

    public function __registerOnEnter($method, \Closure $closure)
    {
        $this->onEnter[$method][] = $closure;
    }

    private function invokeOnEnter($method, array $arguments)
    {
        if (empty($this->onEnter[$method]))
        {
            return;
        }
        foreach ($this->onEnter[$method] as $closure)
        {
            call_user_func($closure, $this->object, $arguments);
        }
    }

    public function __registerOnLeave($method, \Closure $closure)
    {
        $this->onLeave[$method][] = $closure;
    }

    private function invokeOnLeave($method, array $arguments)
    {
        if (empty($this->onLeave[$method]))
        {
            return;
        }
        foreach ($this->onLeave[$method] as $closure)
        {
            call_user_func($closure, $this->object, $arguments);
        }
    }

    private function getProxiedMethod($method)
    {
        $methodReflection = new \ReflectionMethod($this->object, $method);
        return $methodReflection->getClosure($this->object)->bindTo($this);
    }

    public function __call($method, array $arguments)
    {
        $this->invokeOnEnter($method, $arguments);
        call_user_func_array($this->getProxiedMethod($method), $arguments);
        $this->invokeOnLeave($method, $arguments);
    }

    public function __construct($object)
    {
        $this->object = (object) $object;
    }

}

class Foo
{

    public function bar()
    {
        $this->qux();
    }

    public function qux()
    {
        $this->zip();
    }

    public function zip()
    {
        var_dump(__CLASS__);
    }

}

$fooProxy = new Proxy(new Foo());
$fooProxy->__registerOnEnter('bar', function ($object) {
    var_dump(sprintf('%s::bar#onEnter', get_class($object)));
});
$fooProxy->__registerOnLeave('bar', function ($object) {
    var_dump(sprintf('%s::bar#onLeave', get_class($object)));
});
$fooProxy->__registerOnEnter('qux', function ($object) {
    var_dump(sprintf('%s::qux#onEnter', get_class($object)));
});
$fooProxy->__registerOnLeave('qux', function ($object) {
    var_dump(sprintf('%s::qux#onLeave', get_class($object)));
});
$fooProxy->__registerOnEnter('zip', function ($object) {
    var_dump(sprintf('%s::zip#onEnter', get_class($object)));
});
$fooProxy->__registerOnLeave('zip', function ($object) {
    var_dump(sprintf('%s::zip#onLeave', get_class($object)));
});

$fooProxy->bar();

Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: string(16) "Foo::bar#onEnter" Warning: Cannot bind method Foo::bar() to object of class Proxy in /in/8I4Tb on line 47 Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, no array or string given in /in/8I4Tb:53 Stack trace: #0 /in/8I4Tb(104): Proxy->__call('bar', Array) #1 {main} thrown in /in/8I4Tb on line 53
Process exited with code 255.
Output for 8.0.0 - 8.0.9: string(16) "Foo::bar#onEnter" Warning: Cannot bind method Foo::bar() to object of class Proxy in /in/8I4Tb on line 47 Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($function) must be a valid callback, no array or string given in /in/8I4Tb:53 Stack trace: #0 /in/8I4Tb(104): Proxy->__call('bar', Array) #1 {main} thrown in /in/8I4Tb on line 53
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33: string(16) "Foo::bar#onEnter" Warning: Cannot bind method Foo::bar() to object of class Proxy in /in/8I4Tb on line 47 Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in /in/8I4Tb on line 53 string(16) "Foo::bar#onLeave"
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20: string(16) "Foo::bar#onEnter" string(16) "Foo::qux#onEnter" string(16) "Foo::zip#onEnter" string(3) "Foo" string(16) "Foo::zip#onLeave" string(16) "Foo::qux#onLeave" string(16) "Foo::bar#onLeave"
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/8I4Tb on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected '[' in /in/8I4Tb on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/8I4Tb on line 6
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: Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/8I4Tb on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/8I4Tb on line 6
Process exited with code 255.

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