dot-slash对PHP做什么包括调用？ [英] What does the dot-slash do to PHP include calls?

问题描述

一个。这是做什么的？

require ("./file.php");

B.与此相比？

require ("file.php");

---

（不 up-one-directory ..这将是）

---

(Its not up-one-directory.. which would be)

require ("../file.php");

推荐答案

./ 是当前目录。它与 file.php 大致相同，但在很多情况下（包括这个）它不检查PHP可能寻找文件的任何标准位置，而是检查仅当前目录。

./ is the current directory. It is largely the same as just file.php, but in many cases (this one included) it doesn't check any standard places PHP might look for a file, instead checking only the current directory.

来自 PHP文档（注意最后一句）：

From the PHP documentation (notice the last sentence):

包含的文件是第一个在每个相对于当前工作目录的include_path条目中查找，然后在当前脚本的目录中查找。例如。如果你的include_path是库，当前工作目录是/ www /，你包括include / a.php，那个文件中包含b.php，b.php首先在/ www / libraries /中查找，然后在/中WWW /包含/。如果filename以./或../开头，则仅在当前工作目录中查找。

Files for including are first looked for in each include_path entry relative to the current working directory, and then in the directory of current script. E.g. if your include_path is libraries, current working directory is /www/, you included include/a.php and there is include "b.php" in that file, b.php is first looked in /www/libraries/ and then in /www/include/. If filename begins with ./ or ../, it is looked only in the current working directory.

这篇关于dot-slash对PHP做什么包括调用？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！