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javascript - php module.sodll & java.class

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Release： 2016-06-06 20:42:22
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php的extension dll文件(wind) so文件(liunx)
以及java的class文件
他们是否都是字节码文件?

回复内容：

php的extension dll文件(wind) so文件(liunx)
以及java的class文件
他们是否都是字节码文件?

php的extension只有在Windows上是.dll文件，在Linux上同样是.so文件。它与其它.so文件或.dll文件的格式是一样的。

Linux的.so文件是机器码，对应于Windows下的.dll文件，被称为动态链接库。.so文件与.dll文件的区别是文件格式不同，.so文件格式是ELF，.dll文件格式是PE。

java的class是java字节码，是平台无关的，只能运行于java虚拟机中。

dll和so都是x86二进制代码，但是格式不太一样。
java的class文件是jvm中间代码，可以用jd-gui反编译成java源码来看。

都是二进制文件，参考这里 http://baike.baidu.com/view/560330.htm

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