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php魔术常量实例介绍,php魔术常量

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Release: 2016-06-13 08:45:44
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php魔术常量实例介绍,php魔术常量

魔术常量 php向它运行的任何脚本提供了大量的预定义常量了,我们常用的php魔术常量有 __CLASS__ __FUNCTION__ __LINE__ __FILE__ __DIR__ __METHOD__了,本文章通过php实例向大家介绍php魔术常量

 

实例:

<span>class</span><span> MoShu{
 </span><span>public</span> <span>function</span><span> moshu() {
  </span><span>echo</span> '当前类名:' . <span>__CLASS__</span> . "<br />"<span>;
  </span><span>echo</span> '当前方法名:' . <span>__FUNCTION__</span> . "<br />"<span>;
  </span><span>echo</span> '当前文件中所在的行数:' . <span>__LINE__</span> . "<br />"<span>;
  </span><span>echo</span> '当前文件绝对路径:' . <span>__FILE__</span> . "<br />"<span>;
  </span><span>echo</span> '当前文件所在的绝对路径的文件夹:' . __DIR__ . "<br />"<span>;
  </span><span>echo</span> '返回类名::方法名:' . <span>__METHOD__</span> . "<br />"<span>;
 }
}

</span><span>$moshu</span> = <span>new</span><span> moshu();
</span><span>$moshu</span>->moshu();
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将代码复制到这里运行一把

结果如下:

<span>当前类名:MoShu
当前方法名:moshu
当前文件中所在的行数:</span>10<span>
当前文件绝对路径:D</span>:\xampp\htdocs\test\moshu.<span>php
当前文件所在的绝对路径的文件夹:D</span>:<span>\xampp\htdocs\test
返回类名</span>::方法名:MoShu::moshu
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