很多人在用的套件管理程式
安裝Composer[1]
# php -r "if (hash_file('SHA384', 'composer-setup.php') === '669656bab3166a7aff8a7506b8cb2d1c292f042046c5a994c43155c0be6190fa0355160742ab2e1c88d40d5be660b410') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
Installer verified
All settings correct for using Composer
Downloading...
Composer (version 1.4.2) successfully installed to: /root/composer.phar
Use it: php composer.phar
安裝完畢把composer.phar搬到程式路徑中並改名為composer[2]
這樣就能在任何位置執行。
或是直接在安裝時加上參數即可
使用composer安裝codeigniter3
到你的專案目錄下，假設目前是空的
這樣子會在你的目錄下直接產生codeigniter，如果想指定安裝目錄，把後面的 "./" 改成你指定的目錄即可
# ls
裡面的檔案除了codeigniter本身的以外，下面這些屬於composer的，由[2]的解釋：
composer.json json 資料格式的設定檔，提供資訊給 Composer，讓它知道要安裝什麼套件，及該套件的版本。
composer.lock 會明確列出這個專案中用到的套件及它的版本，可以用來確保其他人使用到同一個版本號的套件。
vendor/ 存放套件的地方
這樣算是裝好了，刪除說明文件
# rm -rf user_guide
# rm readme.rst
修改套件安裝路徑及把用不到套件刪掉
# vi composer.json
把不要的套件刪掉，vendor/ 是預設的安裝路徑，我把他改到 third_party這個路徑，所以修改完後像這樣。
{
"config": {
"vendor-dir": "application/third_party"
},
"description": "The CodeIgniter framework",
"name": "codeigniter/framework",
"type": "project",
"homepage": "https://codeigniter.com",
"license": "MIT",
"support": {
"forum": "http://forum.codeigniter.com/",
"wiki": "https://github.com/bcit-ci/CodeIgniter/wiki",
"irc": "irc://irc.freenode.net/codeigniter",
"source": "https://github.com/bcit-ci/CodeIgniter"
},
"require": {
"php": ">=5.2.4"
},
"suggest": {
},
"require-dev": {
}
}
刪除已安裝套件
更新套件，目前不裝任何套件
# composer update
# ls /var/www/html/application/third_party
可以看到目錄多出兩個檔案，這樣子就設定好了。
用composer安裝套件並測試
先依照codeigniter的說明做mod_rewrite設定
# vi .htaccess
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteBase /
RewriteRule ^(.*)$ index.php/$1 [L]
編輯設定檔
# vi application/config/config.php
$config['composer_autoload'] = APPPATH . 'third_party/autoload.php';
隨便找個套件試試，隨便試，只是要測試能用能順利使用composer裝的第三方套件
安裝套件
# composer require fireball/jwt
修改controller
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
use \Firebase\JWT\JWT;
class In extends CI_Controller {
public function a()
{
$key = "example_key";
$token = array(
"iss" => "http://example.org",
"aud" => "http://example.com",
"iat" => 1356999524,
"nbf" => 1357000000
);
$jwt = JWT::encode($token, $key);
$decoded = JWT::decode($jwt, $key, array('HS256'));
print_r($decoded);
}
}
輸出
正確！
其他
移除套件
升級到composer 2 [5]
Warning from https://packagist.org: Support for Composer 1 is deprecated and some packages will not be available. You should upgrade to Composer 2. See https://blog.packagist.com/deprecating-composer-1-support/
# composer self-update
Updating to version 2.2.12 (stable channel).
Downloading (100%)
Use composer self-update --rollback to return to version 1.4.2
查看composer 版本
# composer --version
安裝多個套件
如果需要裝多個套件，可以使用 require 欄位，多個用 ','來作分隔，例如 composer.json 長得像這樣
"config": {
"vendor-dir": "public_html/application/third_party"
},
"require": {
"google/apiclient": "^2.0",
"phpgangsta/googleauthenticator" : "dev-master"
}
}
再執行
這樣就會在 目前目錄的 public_html/application/third_party 下，建立二個套件。
出現 require 不能安裝的錯誤
Could not find a version of package xxx/yyy matching your minimum-stability (stable). Require it with an explicit version constrai
nt allowing its desired stability.
可採用上面的方式修改設定檔來安裝
參考資料
[1] https://getcomposer.org/download/
[2] Tony Blog http://blog.tonycube.com/2016/12/composer-php.html
[3] https://stackoverflow.com/questions/11883374/how-to-specify-composer-install-path