PHP v5.3马上就要release了，这里让我们看看他有一些什么样的新特性。

1）_callStatic() magic 方法

class Foo
{
public static function __callStatic( $name, $args )
{
echo "Called method $name statically";
}
public function __call( $name, $args )
{
echo "Called method $name";
}
}

Foo::dog(); // outputs "Called method dog statically"
$foo = new Foo;
$foo->dog(); // outputs "Called method dog"

2）动态调用函数

class Dog
{
public function bark()
{
echo "Woof!";
}
}
$class = "Dog"
$action = "bark";
$x = new $class(); // instantiates the class "Dog"
$x->$action(); // outputs "Woof!"

3) 标准PHP库（SPL）

加了了少数几个容器类，比如，栈（SplStack）和固定数组（SplFixedArray）

$stack = new SplStack();
// push a few new items on the stack
$stack->push("a");
$stack->push("b");
$stack->push("c");
// see how many items are on the stack
echo count($stack); // returns 3
// iterate over the items in the stack
foreach ( $stack as $item )
echo "[$item],";
// the above outputs: c

[/c],[b],[a] // pop an item off the stack echo $stack->pop(); // returns "c" // now see how many items are on the stack echo count($stack); // returns 2

4) Closures 功能

关于Closures，这是一个把函数定义成变量的玩意。让我们看几个例子：

示例一：

$string = "Hello World!";
$closure = function() use ($string) { echo $string; };

$closure();

Output:
Hello World!
示例二 使用引用的变量

$x = 1
$closure = function() use (&$x) { ++$x; }

echo $x . "\n";
$closure();
echo $x . "\n";
$closure();
echo $x . "\n";

Output:
1
2
3
示例三，返回值

function getAppender($baseString)
{
return function($appendString) use ($baseString)
{ return $baseString .$appendString; };
}

示例四，Reflection

class Counter
{
private $x;

public function __construct()
{
$this->x = 0;
}

public function increment()
{
$this->x++;
}

public function currentValue()
{
echo $this->x . "\n";
}
}
$class = new ReflectionClass("Counter");
$method = $class->getMethod("currentValue");
$closure = $method->getClosure()
$closure();
$class->increment();
$closure();

Output:
0
1
示例五，Reflection API

$closure = function ($x, $y = 1) {};
$m = new ReflectionMethod($closure);
Reflection::export ($m);
Output:
Method [ public method __invoke ] {

• Parameters [2] {
  Parameter #0 [ $x ]
  Parameter #1 [ $y ]
  }

}

示例六，Uses Case

$logdb = function ($string) { Logger::log("debug","database",$string);};
$db = mysqli_connect("server","user","pass");
$logdb("Connected to database");
$db->query("insert into parts (part, description) values
("Hammer","Pounds nails");
$logdb("Insert Hammer into to parts table");
$db->query("insert into parts (part, description) values
("Drill","Puts holes in wood");
$logdb("Insert Drill into to parts table");
$db->query("insert into parts (part, description) values
("Saw","Cuts wood");
$logdb("Insert Saw into to parts table");

更为详细的文章，请参考这里，链接。

5) 使用namespace

新版的PHP会开始支持C++式的namespace，请参看示例：

示例一

/ Foo.php /
<?php
namespace Foo;
function bar()
{
echo "calling bar....";
}
?>
/ File1.php /
<?php
include "./Foo.php";
Foo/bar(); // outputs "calling bar....";
?>
/ File2.php /
<?php
include "./Foo.php";
use Foo as ns;
ns/bar(); // outputs "calling bar....";
?>
/ File3.php /
<?php
include "./Foo.php";
use Foo;
bar(); // outputs "calling bar....";
?>

示例二，多重namespace

<?php
namespace Foo;
class Test {}
namespace Bar;
class Test {}
$a = new Foo\Test;
$b = new Bar\Test;
var_dump($a, $b);
Output:
object(Foo\Test)#1 (0) {
}
object(Bar\Test)#2 (0) {
}
Output:
object(Foo\Test)#1 (0) { }
object(Bar\Test)#2 (0) { }

示例三，不同文件中的namespace

/定义/
/ global.php /
<?php
function hello()
{
echo "hello from the global scope!";
}
?>
/ Foo.php /
<?php
namespace Foo;
function hello()
{
echo "hello from the Foo namespace!";
}
?>
/ Foo_Bar.php /
<?php
namespace Foo/Bar;
function hello()
{
echo "hello from the Foo/Bar namespace!";
}
?>

/使用 /
<?php
include "./global.php";
include "./Foo.php";
include "./Foo_Bar.php";

use Foo;
hello(); // outputs "hello from the Foo namespace!"
Bar\hello(); // outputs "hello from the Foo/Bar namespace!"
\hello(); // outputs "hello from the global scope!"
?>

更为详细的文章，请参考这里，链接。

6)开始支持Achieve包

正像JAR一样，PHP也要开始支持自己的Achieve包了，叫作，Phar。PHP提供了一整套函数来帮助开发人员创建和使用Phar，正如下面的示例所示：

创建：

$p = new Phar("/path/to/my.phar",
CURRENT_AS_FILEINFO | KEY_AS_FILENAME, "my.phar");
$p->startBuffering();

创建文件存根（stub）

$p->setStub("");

加入文件：

$p["file.txt"] = "This is a text file";
$p["index.php"] = file_get_contents("index.php");
$p["big.txt"] = "This is a big text file";
$p["big.txt"]->setCompressedBZIP2();
//加入某目录下所有的文件
$p-&gt;buildFromDirectory("/path/to/files","./\\.php$/");

使用Phar

include "myphar.phar";
include "phar://myphar.phar/file.php";

更为详细的文章，请参考这里，链接。

转载于酷壳CoolShell 无删改 仅以此纪念陈皓(左耳朵耗子)