How does ThinkPHP 3.2 read resource files under Public?

Question

Directory structure:

project
|---App
|---Public
    |---blog-frontend
        |---Home
            |---js
            |---css
            |---img
            |---xxx.md
|---ThinkPHP
|---index.php

The content of the entry file index.php is as follows:

if(version_compare(PHP_VERSION,'5.3.0','<')) die('require PHP > 5.3.0 !');
// Turn on debugging mode. It is recommended to turn it on during the development stage. Comment or set it to false during the deployment stage.
define('APP_DEBUG',true);
//Define application directory
define('APP_PATH','./App/');
//Introduce ThinkPHP entry file
require './ThinkPHP/ThinkPHP.php';
// Dear ^_^ You don’t need any code later, it’s that simple

Configured in public config.php

'TMPL_PARSE_STRING' => array(
    '__STATIC__' => __ROOT__ . '/Public/blog-frontend',
),

And use resources using Public in the view: introduce static resources

<script src="__STATIC__/Home/js/jquery.min.js"></script>

There is no problem with the above code and it was introduced successfully.

However, in the controller

function Xaction(){
    $file = "/Public/blog-frontend/Home/xxx.md";
    $fopen = fopen($file,'r');
    var_dump($fopen);
}

Output

false

Strange, I tried fopen in the view again

$file = "__STATIC__/Home/xxx.md";
$fopen = fopen($file,'r');
var_dump($fopen);

Output

false

I tried again fopen and replaced it with file_get_contents. The result was still false whether it was the output in the controller or the view. So I changed the suffix .md to .txt and the result was still false.

How to solve it?
Supplement:
Thank you for your help. Through @jiny's method, the problem has been solved.

For some reason, I print it in IndexController.class.php

var_dump(__ROOT__);
var_dump(__PUBLIC__); 

(The above is the default, I have not configured it.)

output:

string(0) ""
string(10) "__PUBLIC__" // if var_dump(__ABCDE__);// string(9) "__ABCDE__"

Answer 1

function Xaction(){
    $file = $_SERVER['DOCUMENT_ROOT']."/Public/blog-frontend/Home/xxx.md";
    $fopen = fopen($file,'r');
    var_dump($fopen);
}
//在控制器里要这么写 $_SERVER['DOCUMENT_ROOT'] 

Answer 2

1. First you need to understand the directory where PHP 执行 Xaction 这个方法的时候对应的路径是什么？
   ThinkPHP 中的入口文件担当着入口的作用，意味着方法的执行实际上都是在这一文件中去完成的（各种 require），所以执行 Xaction 的方法所在路径即为 index.php is located

2. It is recommended to use relative paths
   Now that you know the path of the current script, it is very clear to obtain the resource files under Public

   $file = './Public/blog-frontend/Home/xxx.md'

Answer 3

我一般用$file = __ROOT__."/Public/Home/xxx.md";

Answer 4

Default __PUBLIC__ You can print it and see.
I don’t think the way you tested is correct. Don’t rush to use multiple ways to prove your idea. Organize a method and go step by step.

Answer 5

When using fopen, check whether the directory file is configured with corresponding permissions. This may be the reason.

Answer 6

Thanks for the invitation! Use TP的系统常量__PUBLIC__Quote

Answer 7

Thanks for the invitation, tp provides the system constant _PUBLIC_, which can be directly referenced by defining the path under config