The PHPJava is experimental library which emulate JVM (a.k.a. Java Virtual Machine) by PHP 🐘 The PHPJava proceed to read binary from pre-compiled Java file(s) ☕ This project reference to Java Virtual Machine Specification documentation when We makes.
We welcoming to contributions this project 💪
- PHP >= 7.2
- Composer
- ext-zip
Sorry, I do not have enough time (T_T)
- Inner classes
- Annotations
- Extends other class
- Implements
- Event
- Java Archive
- double/float calculation.
- Many built-in libraries (ex. java.lang.xxx, java.io.xxx and so on)
- etc...
-
- Install the PHPJava into your project.
$ composer require memory-agape/php-java
-
- Write Java
class HelloWorld
{
public static void main(String[] args)
{
System.out.println(args[0] + " " + args[1]);
}
}-
- Compile Java
$ javac -UTF8 /path/to/HelloWorld.java
-
- Call to main method as following.
<?php
use PHPJava\Core\JavaClass;
use PHPJava\Core\JavaClassReader;
(new JavaClass(new JavaClassReader('/path/to/HelloWorld.class')))
->getInvoker()
->getStatic()
->getMethods()
->call(
'main',
["Hello", 'World']
);-
- Get a result
$ php /path/to/HelloWorld.php
Hello World
- ex) Set or Get a static fields as follows.
<?php
use PHPJava\Core\JavaClass;
use PHPJava\Core\JavaClassReader;
$staticFieldAccessor = (new JavaClass(new JavaClassReader('/path/to/HelloWorld.class')))
->getInvoker()
->getStatic()
->getFields();
// Set
$staticFieldAccessor->set('fieldName', 'value');
// Get
echo $staticFieldAccessor->get('fieldName');- ex) Call to static method as follows.
<?php
use PHPJava\Core\JavaClass;
use PHPJava\Core\JavaClassReader;
(new JavaClass(new JavaClassReader('/path/to/HelloWorld.class')))
->getInvoker()
->getStatic()
->getMethods()
->call(
'methodName',
$firstArgument,
$secondArgument,
$thirdArgument,
...
);
// Or if called method have return value then you can store to variable.
$result = (new JavaClass(new JavaClassReader('/path/to/HelloWorld.class')))
->getInvoker()
->getStatic()
->getMethods()
->call(
'methodWithSomethingReturn',
$firstArgument,
$secondArgument,
$thirdArgument,
...
);
// The $result you want is output.
echo $result;If you want to get/set dynamic fields, you need call to construct method on Java by PHPJava.
- ex) Call dynamic field as following.
<?php
use PHPJava\Core\JavaClass;
use PHPJava\Core\JavaClassReader;
$javaClass = new JavaClass(new JavaClassReader('/path/to/HelloWorld.class'));
$javaClass->getInvoker()->construct();
$dynamicFieldAccessor = $javaClass
->getInvoker()
->getDynamic()
->getFields();
// Set
$dynamicFieldAccessor->set('fieldName', 'value');
// Get
echo $dynamicFieldAccessor->get('fieldName');If you want to get/set dynamic method (same as field), you need call to construct method on Java by PHPJava.
- ex) Call dynamic method as following.
<?php
use PHPJava\Core\JavaClass;
use PHPJava\Core\JavaClassReader;
$dynamicMethodAccessor = (new JavaClass(new JavaClassReader('/path/to/HelloWorld.class')))
->getInvoker()
->construct()
->getDynamic()
->getMethods();
$dynamicMethodAccessor
->call(
'methodName',
$firstArgument,
$secondArgument,
$thirdArgument,
...
);
// Or if called method have return value then you can store to variable.
$dynamicMethodAccessor
->call(
'methodWithSomethingReturn',
$firstArgument,
$secondArgument,
$thirdArgument,
...
);
// The $result you want is output.
echo $result;- Output debug trace as following if you want to show operated log.
<?php
use PHPJava\Core\JavaClass;
use PHPJava\Core\JavaClassReader;
$javaClass = new JavaClass(new JavaClassReader('/path/to/HelloWorld.class'));
$javaClass
->getInvoker()
->getStatic()
->getMethods()
->call(
'main',
["Hello", 'World']
);
// Show debug traces.
$javaClass->debug();- Outputted debug trace is below.
[method]
public static void main(java.lang.String[])
[code]
<0xb2> <0x00> <0x02> <0x2a> <0x03> <0x32> <0xb6> <0x00> <0x03> <0xb2> <0x00> <0x02> <0x2a> <0x04> <0x32> <0xb6> <0x00> <0x03> <0xb2> <0x00>
<0x02> <0x2a> <0x05> <0x32> <0xb6> <0x00> <0x03> <0xb1>
[executed]
PC | OPCODE | MNEMONIC | OPERANDS | LOCAL STORAGE
---------+--------+----------------------+------------+-----------------
0 | 0xB2 | getstatic | 0 | 1
3 | 0x2A | aload_0 | 1 | 1
4 | 0x03 | iconst_0 | 2 | 1
5 | 0x32 | aaload | 3 | 1
6 | 0xB6 | invokevirtual | 2 | 1
9 | 0xB2 | getstatic | 0 | 1
12 | 0x2A | aload_0 | 1 | 1
13 | 0x04 | iconst_1 | 2 | 1
14 | 0x32 | aaload | 3 | 1
15 | 0xB6 | invokevirtual | 2 | 1
18 | 0xB2 | getstatic | 0 | 1
21 | 0x2A | aload_0 | 1 | 1
22 | 0x05 | iconst_2 | 2 | 1
23 | 0x32 | aaload | 3 | 1
24 | 0xB6 | invokevirtual | 2 | 1
27 | 0xB1 | return | 0 | 1
---------+--------+----------------------+------------+-----------------
- [method] is showing called method.
- [code] is showing JVM's real programs.
- [executed] is showing executed programs.
- PC is showing Program Counter.
- OPCODE is showing Operation Codes.
- MNEMONIC is naming Operation Codes.
- OPERANDS is showing stacked items on memory.
- LOCAL STORAGE is showing stacked items on a method.
-
The PHP is cannot calculating big numbers because of PHP is different to the Java. But the PHPJava use
bcmathfunctions andgmpfunctions to a certain extent to cover to calculate. The PHPJava return valued is mixed why therefore We recommend to cast tostringon the PHPJava. -
The PHPJava cannot cover to Java's types completely because of PHP is different to the Java. The Java and the PHPJava comparison table is below.
| Java | PHPJava |
|---|---|
| null | null |
| boolean | \PHPJava\Kernel\Types\_Boolean (including __toString) |
| char | \PHPJava\Kernel\Types\_Char (including __toString), string |
| byte | \PHPJava\Kernel\Types\_Byte (including __toString), string |
| short | \PHPJava\Kernel\Types\_Short (including __toString), string, int |
| int | \PHPJava\Kernel\Types\_Int (including __toString), string, int |
| long | \PHPJava\Kernel\Types\_Long (including __toString), string, int |
| float | \PHPJava\Kernel\Types\_Float (including __toString), string, float |
| double | \PHPJava\Kernel\Types\_Char (including __toString), string, float |
- PHPUnit test is below.
$ ./vendor/bin/phpunit tests
- PHP Coding standards testing is below.
$ ./vendor/bin/phpcs --standard=phpcs.xml src
- All testing is below.
$ composer run tests
MIT