從官網(wǎng)下載composer

威遠(yuǎn)網(wǎng)站制作公司哪家好，找創(chuàng)新互聯(lián)建站！從網(wǎng)頁(yè)設(shè)計(jì)、網(wǎng)站建設(shè)、微信開(kāi)發(fā)、APP開(kāi)發(fā)、成都響應(yīng)式網(wǎng)站建設(shè)公司等網(wǎng)站項(xiàng)目制作，到程序開(kāi)發(fā)，運(yùn)營(yíng)維護(hù)。創(chuàng)新互聯(lián)建站2013年至今到現(xiàn)在10年的時(shí)間，我們擁有了豐富的建站經(jīng)驗(yàn)和運(yùn)維經(jīng)驗(yàn)，來(lái)保證我們的工作的順利進(jìn)行。專注于網(wǎng)站建設(shè)就選創(chuàng)新互聯(lián)建站。

https://getcomposer.org/

composer是跨平臺(tái)的, 這里只介紹windows使用composer

下載好了后, 進(jìn)行安裝.

可以選擇 "Install Shell Menus", 這將會(huì)在右鍵菜單里面增加composer的快捷入口.

composer會(huì)自動(dòng)找到php.exe的位置. 也可以自定義php的位置.

下載composer.phar

該死的"墻", 連接上×××.

我的php 5.3.3 確實(shí)夠老的. 點(diǎn)擊next.

成功, composer設(shè)置了 path 環(huán)境變量. 所以可以在command line的任意位置使用composer命令了.

下面就來(lái)用一下composer.

新建一個(gè)文件夾, C:\clearvale\elgg\ztest\oauth_server_bshaffer

由于裝了  shell menu,

所以直接在文件夾上右鍵選擇 Use Composer here

現(xiàn)在遵循最傳統(tǒng)的方式使用composer, 新建oauth_server_bshaffer/composer.json 文件.

這里用 bshaffer的oauth3 server來(lái)演示. 在composer.php里面寫入如下內(nèi)容.

{

    "require": {

        "bshaffer/oauth3-server-php": "~0.9"

    }

}

<<<<<<<<<<<<<<<<<<<<

這里記錄一下, 之前寫入的是 

{

    "require": {

        "bshaffer/oauth3-server-php": "~1.7",

    }

}

首先多了個(gè) , 號(hào)

導(dǎo)致composer報(bào)錯(cuò).

C:\clearvale\elgg\ztest\oauth_server_bshaffer>composer install

  [Seld\JsonLint\ParsingException]

  "./composer.json" does not contain valid JSON

  Parse error on line 3:

}

  ---------------------^

  Expected: 'STRING' - It appears you have an extra trailing comma

install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-plugins] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--n

o-progress] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [--ignore-platform-reqs] [packages1] ... [packagesN]

去掉逗號(hào)后, 又報(bào)如下錯(cuò)誤:

C:\clearvale\elgg\ztest\oauth_server_bshaffer>composer install

Loading composer repositories with package information

Installing dependencies (including require-dev)

Your requirements could not be resolved to an installable set of packages.

  Problem 1

    - Installation request for bshaffer/oauth3-server-php dev-develop -> satisfiable by bshaffer/oauth3-server-php[dev-develop].

    - bshaffer/oauth3-server-php dev-develop requires php >=5.3.9 -> your PHP version (5.3.3) or "config.platform.php" value does not satisfy that req

uirement.

C:\clearvale\elgg\ztest\oauth_server_bshaffer>composer install

Loading composer repositories with package information

Installing dependencies (including require-dev)

Your requirements could not be resolved to an installable set of packages.

  Problem 1

    - bshaffer/oauth3-server-php v1.7.1 requires php >=5.3.9 -> your PHP version (5.3.3) or "config.platform.php" value does not satisfy that requirem

ent.

    - bshaffer/oauth3-server-php v1.7.0 requires php >=5.3.9 -> your PHP version (5.3.3) or "config.platform.php" value does not satisfy that requirem

ent.

    - Installation request for bshaffer/oauth3-server-php ~1.7 -> satisfiable by bshaffer/oauth3-server-php[v1.7.0, v1.7.1].

大意是說(shuō): 1.7這個(gè)版本的最低php環(huán)境是 php >= 5.3.9

那么到底有多少個(gè)版本, 哪個(gè)版本支持php5.3.3 呢?

可以訪問(wèn)composer的packagelist官網(wǎng).

https://packagist.org/packages/bshaffer/oauth3-server-php#v0.9

正好, bshaffer也推薦v0.9為stable release. 

>>>>>>>>>>>>>>>>>>>>>>>>>

所以就裝 v0.9, 繼續(xù)composer install

C:\clearvale\elgg\ztest\oauth_server_bshaffer>composer install

Loading composer repositories with package information

Installing dependencies (including require-dev)

  - Installing bshaffer/oauth3-server-php (v0.9)

    Downloading: 100%

Writing lock file

Generating autoload files

成功了. composer已經(jīng)成功安裝了oauth3-server-php (v0.9),

查看安裝后的文件目錄.

composer.lock用于鎖定所有包的版本.  安裝的時(shí)候會(huì)檢查composer.lock文件的存在.

composer.lock和composer.json一起控制項(xiàng)目的版本.

比如現(xiàn)在已經(jīng)裝完了包, 再次運(yùn)行composer install, 會(huì)顯示 Nothing to install or update.

oauth_server_php v0.9包已經(jīng)安裝完畢.

下面測(cè)試一下 auto_load

新建: C:\clearvale\elgg\ztest\oauth_server_bshaffer\test.php

寫入如下內(nèi)容:

 $dsn, 'username' => $username, 'password' => $password));
print_r($storage);

最后打印出了 $storage對(duì)象.

那么可見(jiàn)包里面的文件已經(jīng)被自動(dòng)加載. 只需要 require 'vendor/autoload.php';

包里面的所有文件都可以使用了.

end...

(有關(guān)composer更多的內(nèi)容, 訪問(wèn): http://www.phpcomposer.com/)