php魔术常量实例介绍,php魔术常量
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();
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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