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PHP 包含文件路径有关问题

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Release: 2016-06-13 13:03:50
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PHP 包含文件路径问题

??? 最近刚刚在学PHP,在做一个小项目,用到了很多require和include,被绝对路径、相对路径弄的焦头烂额,最后终于搞明白了。

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??? 1、php的相对路径是以运行的脚本为准,比如A包含B,B包含C,如果A、C在同一级目录,则B里包含C的路径应该是相对于A的,如果B、C在同一级目录,则B里包含C的路径是相对于C的。

??? 2、不管.php脚本怎么被包含,dirname(__FILE__)得到的都是脚本所在文件夹的绝对路径。


??? 这两条规则很难准确的运用,至少我自己就经常被搞晕,所以我用了一个比较取巧的办法,自己写了一个path.php,这样一来就很少出错了。


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????? define('ROOT_PATH',dirname(__FILE__));
????? define('ACTION_PATH',ROOT_PATH.'/action/');
????? define('BEAN_PATH',ROOT_PATH.'/bean/');
????? define('DAO_PATH',ROOT_PATH.'/dao/');
????? define('IPADVIEW_PATH',ROOT_PATH.'/ipadView/');
????? define('VIEW_PATH',ROOT_PATH.'/view/');


??? ?>

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