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很简单的php问题

WBOY
Release： 2016-06-23 13:16:10
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<html><head></head><body><?PHP  echo 'hello world';?></body></html>
Copy after login



为什么不显示helloworld呢?


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文件后缀要为 php
必须从网站上运行

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很简单的php问题
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