PHP code example of tekintian / pinyin_utils

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

tekintian / pinyin_utils example snippets

// 载入自动加载： 如果使用框架的话这个步骤可以忽略。
vert("云南网");

echo $py;

~~~



## sources

## How to autoload the PSR-4 way?
PSR-4 is the newest standard of autoloading in PHP, and it compels us to use namespaces.

We need to take the following steps in order to autoload our classes with PSR-4:

a. Put the classes that we want to autoload in a dedicated directory. For example, it is customary to convene the classes that we write into a directory called src/, thus, creating the following folder structure:
~~~html
your-website/
  src/
    Db.php
    Page.php
    User.php
~~~
b. Give the classes a namespace. We must give all the classes in the src/ directory the same namespace. For example, let's give the namespce Acme to the classes. This is what the Page class is going to look like:
~~~php

namespace Acme;

class Page {
    public function __construct()
    {
        echo "hello, i am a page.";
    }

 

use Acme\Db;
use Acme\User;
use Acme\Page;
 
$page1 = new Page();
~~~
How to autoload if the directory structure is complex?
Up till now, we demonstrated autoloading of classes that are found directly underneath the src/ folder, but how can we autoload a class that is found in a subdirectory? For example, we may want to move the Page class into the Pages directory and, thus, create the following directory tree:
~~~html
your-website/
  src/
    Db.php
    User.php
    Pages/
      Page.php
~~~
These are the steps that we need to follow:
a. Redefine the namespace. We need to give the Page class a namespace in accordance with its new location in the src/Pages directory.
~~~php

namespace Acme\Pages;

public class Page {
    function __construct()
    {
        echo "hello, i am a page.";
    }