问题描述
这个问题是独立的,但我之前曾问过类似的问题:-
问题已解决,但我无法解释嵌套问题。我认为提出一个新问题会更合适。
我进行了很多搜索,但无法使嵌套名称空间与psr-4自动加载配合使用。 / p>
目录结构:-
│composer.json
│run.php
│
├───src
│├───一个
││parentclass.php
││
│└─ ──两个
│childclass.php
│
└───卖方
│autoload.php
│
└───作曲者
autoload_classmap.php
autoload_namespaces.php
autoload_psr4.php
autoload_real.php
ClassLoader.php
installed.json
许可
parentclass.php:-
<?php
命名空间myns\one;
抽象类父类
{
抽象公共函数abc();
}
childclass.php:-
命名空间myns\two;
命名空间myns\one;
使用myns\one\parentclass作为父类;
类子类扩展了父类
{
公共函数abc()
{
echo'hello world';
}
}
composer.json:-
{
name: myvendor / mypackage,
description: nothing,
作者:[
{
name: Omar Tariq,
email: XXXXX@gmail.com
}
],
require:{},
autoload:{
psr-4:{
myns\\: src /,
myns\\one\\: src / one /,
myns\\two\\: src / two /
}
}
}
run.php:-
<?php
require_once __DIR__。 ‘/vendor/autoload.php’;
使用myns\two\childclass作为childclass;
$ childclass = new childclass();
$ childclass-> abc();
当我运行 php run.php
时。它给出错误:-
致命错误:在C:wamp中找不到类'myns\two\childclass' \ ... \run.php,第7行
一个类只能在文件中声明一个名称空间。通过在 childclass.php
中包含两个名称空间,您可能会覆盖第一个。
可以看到一个完整的示例使用多个名称空间,但文件仅包含1个命名空间
声明。就是说,对于您的情况,我怀疑您只是犯了一个错误而只需要一个名称空间。
因为该文件位于 myns\two ;
您应该使用 namespace myns\two;
并删除另一个。
This question is independent but I did ask a similar question before:-
Composer Gives Error, "Class Not Found"
The problem was solved but I failed to explain the nesting issue. I thought it will be more appropriate to make a new question.
I searched a lot but I can't make the nesting namespaces to work with psr-4 autoloading.
Directory Structure:-
│ composer.json
│ run.php
│
├───src
│ ├───one
│ │ parentclass.php
│ │
│ └───two
│ childclass.php
│
└───vendor
│ autoload.php
│
└───composer
autoload_classmap.php
autoload_namespaces.php
autoload_psr4.php
autoload_real.php
ClassLoader.php
installed.json
LICENSE
parentclass.php:-
<?php
namespace myns\one;
abstract class parentclass
{
abstract public function abc();
}
childclass.php:-
namespace myns\two;
namespace myns\one;
use myns\one\parentclass as parentclass;
class childclass extends parentclass
{
public function abc()
{
echo 'hello world';
}
}
composer.json:-
{
"name": "myvendor/mypackage",
"description": "nothing",
"authors": [
{
"name": "Omar Tariq",
"email": "XXXXX@gmail.com"
}
],
"require": {},
"autoload": {
"psr-4": {
"myns\\": "src/",
"myns\\one\\": "src/one/",
"myns\\two\\": "src/two/"
}
}
}
run.php:-
<?php
require_once __DIR__ . '/vendor/autoload.php';
use myns\two\childclass as childclass;
$childclass = new childclass();
$childclass->abc();
When I run php run.php
. It gives error:-
Fatal error: Class 'myns\two\childclass' not found in C:\wamp\...\run.php on line 7
A class can only declare one namespace in the file. By including two namespaces in childclass.php
, you are likely overriding the first.
A full example can be seen here of using multiple namespaces, but the file only includes 1 namespace
declaration. That said, I suspect for your case you simply made a mistake and only need one namespace.
Because the file is located in myns\two;
you should use namespace myns\two;
and remove the other.
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