composer拓展包开发

痛定思痛。 2023-02-27 12:14 33阅读 0赞

composer的出现大大提升了开发的效率，当我们去开发什么功能的时候，大多时候我们都可以在composer仓库中找到相对应的轮子，来使用。  
如果自己也想写轮子给广大的php开发者使用，那么就该学习一下composer包如何开发了

# composer项目初始化 #

这里我创建的文件夹 `math`

> composer init

Package name (<vendor>/<name>) [chaow/math]: smallk/math //包名 格式必须
    Description []: math test // 描述
    Author [, n to skip]:
     Invalid author string.  Must be in the format: John Smith <john@example.com>
    Author [, n to skip]: smallk <396656156@qq.com>  //作者姓名和邮箱
    Minimum Stability []: dev //迭代中
    Package Type (e.g. library, project, metapackage, composer-plugin) []: library  //拓展包类型
    License []: MIT //开源限制
    
    Define your dependencies.
    
    Would you like to define your dependencies (require) interactively [yes]? no
    Would you like to define your dev dependencies (require-dev) interactively [yes]? no
    
    { 
        "name": "smallk/math",
        "description": "math test",
        "type": "library",
        "license": "MIT",
        "authors": [
            { 
                "name": "smallk",
                "email": "396656156@qq.com"
            }
        ],
        "minimum-stability": "dev",
        "require": { } //依赖其他拓展
    }
    
    Do you confirm generation [yes]? yes

# 设置自动加载路径 #

打开 `composer.json` 文件在后面添加自动加载的路径，这里使用 `psr-4` 规则，对应我们在math目录下建立`src/Math`目录，在`Math`文件夹中放我们的`php`文件

{ 
        "name": "smallk/math",
        "description": "math test",
        "type": "library",
        "license": "MIT",
        "authors": [
            { 
                "name": "smallk",
                "email": "396656156@qq.com"
            }
        ],
        "minimum-stability": "dev",
        "require": { },
        "autoload": { 
            "psr-4": { 
                "Math\\": "src/Math/"
            }
        }
    }

# 拓展包开发 #

在`Math`目录中新建`Math.php`文件写一个简单的加法

<?php
    
    namespace Math;
    class Math
    { 
        public function sum($a,$b){ 
    
            return $a+$b;
        }
    }

# 拓展包发布 #

将开发完的拓展包发布`github`上，如何将代码发布到`github`自行搜索

已经将本地`math`目录同步到`github`上，在本项目的设置中将私有仓库改为公有仓库  
![在这里插入图片描述][20200717154534546.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw_size_16_color_FFFFFF_t_70]  
用`github`账号授权登录[composer][]网站，进行包的提交  
![在这里插入图片描述][20200717155135846.png]

*  可能会出现包名重复异常，我们需要修改我们的包名  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw_size_16_color_FFFFFF_t_70 1]

{ 
        "name": "superkingm/math", //全小写不能出现大写
        "description": "math test",
        "type": "library",
        "license": "MIT",
        "authors": [
            { 
                "name": "superkingm",
                "email": "396656156@qq.com"
            }
        ],
        "minimum-stability": "dev",
        "require": { },
        "autoload": { 
            "psr-4": { 
                "Math\\": "src/Math/"
            }
        }
    }

再次提交，完成拓展包发布  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw_size_16_color_FFFFFF_t_70 2]

# 拓展包使用 #

我们已经在`composer`上面发布了我们的拓展包，我们现在就去使用我们的拓展包

> composer require superkingm/math dev-master

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw_size_16_color_FFFFFF_t_70 3]  
新建`index.php`文件使用拓展包中的类

<?php
    require './vendor/autoload.php';
    use Math\Math;
    class Test{ 
        function one(){ 
            $math = new Math();
            echo $math->sum(10,20);
        }
    }
    $obj = new Test();
    $obj->one();//页面打印30

*  到这里我们的`composer`拓展包已经可以分享给其他人使用了
 *  下一篇：[拓展包的自动更新与版本控制][Link 1]

[20200717154534546.png]: /images/20230209/a3341857ee9d467d8823b05a8bb862b8.png
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[composer]: https://packagist.org/
[20200717155135846.png]: https://img-blog.csdnimg.cn/20200717155135846.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200717155436414.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200717160012216.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200717160405136.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY3NDExMw==,size_16,color_FFFFFF,t_70
[Link 1]: https://blog.csdn.net/weixin_43674113/article/details/107411839