将PHP源码编译成JVM字节码的编译器：JPHP

jphp是一个类似于javac的编译器，它能够将php源代码编译成jvm字节码的编译器。然后就实现了让php程序运行在java虚拟机器上。 它支持许多php5.3+的特性。jphp与 jruby和jython相似。

支持: JDK 1.6+ (OpenJDK, Oracle)。

目标

JPHP不是 Zend PHP 引擎或Facebook HHVM的一个代替。它并不想实现zend运行库(比如：Curl, PRCE等)。这个项是为了：

1. 能够在PHP中使有用Java对象
2. 通过 JIT 和 JVM提升性能
3. 利用更好的运行时库来代替Zend PHP的丑陋的运行时库
4. 让PHP不单只能用于开发Web应用
5. Also: unicode for strings and threads

特性

• JIT (2x - 10x faster PHP 5.4)
• Optimizer (constant expressions, inline functions, etc.)
• Using java libraries and classes in PHP code.
• Unicode for strings (UTF-16, like in Java)
• Threading, Sockets
• Environment architecture (like sandbox objects in runkit zend extension).
• GUI (based on Swing, improved - more flexible layouts)
• Embedded cache system for classes and functions
• Optional Hot Reloading for classes and functions

语言支持的特性

(without zend runtime libraries)

• PHP 5.2+ fully support (with OOP)
• Closures (PHP 5.3), auto-binding $this in closures (PHP 5.4)
• Namespaces fully support (PHP 5.3)
• Spl autoloading for classes (PHP 5.3)
• Iterators, ArrayAccess, Serializable
• Type hinting for classes, arrays, callable (PHP 5.4)
• Array short syntax (PHP 5.4)
• Ternary short cut "?:", NOWDOC, __callStatic, __invoke (PHP 5.3)
• Late static binding (PHP 5.3)
• GC for cyclic references (PHP 5.3)
• Class::{expr}(), (new Foo)->bar() (PHP 5.4)
• Try finally (PHP 5.5)
• Array and string literal dereferencing (PHP 5.5)
• __debugInfo for var_dump (PHP 5.6)
• Function array dereferencing has been added, e.g. foo()[0] (PHP 5.4)
• Constants can be declared outside a class using the const keyword. (PHP 5.3)
• Dynamic access to static methods (PHP 5.3)
• Exceptions can be nested (PHP 5.3)
• ::class system constant (php 5.5)

还不支持什么?

• Traits (php 5.4)
• Generators (php 5.5)
• Goto (php 5.3)
• list() in foreach (php 5.5)
• Binary number format, e.g. 0b001001101 (php 5.4)

项目主页：http://www.open-open.com/lib/view/home/1395628572618

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