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Advise the use of absolute paths, fixes #4259

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Jordi Boggiano 9 years ago
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doc/01-basic-usage.md
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## Introduction ## Introduction
For our basic usage introduction, we will be installing `monolog/monolog`, For our basic usage introduction, we will be installing `monolog/monolog`,
a logging library. If you have not yet installed Composer, refer to the a logging library. If you have not yet installed Composer, refer to the
[Intro](00-intro.md) chapter. [Intro](00-intro.md) chapter.
> **Note:** for the sake of simplicity, this introduction will assume you > **Note:** for the sake of simplicity, this introduction will assume you
@ -18,7 +18,7 @@ other metadata as well.
### The `require` Key ### The `require` Key
The first (and often only) thing you specify in `composer.json` is the The first (and often only) thing you specify in `composer.json` is the
[`require`](04-schema.md#require) key. You're simply telling Composer which [`require`](04-schema.md#require) key. You're simply telling Composer which
packages your project depends on. packages your project depends on.
```json ```json
@ -29,8 +29,8 @@ packages your project depends on.
} }
``` ```
As you can see, [`require`](04-schema.md#require) takes an object that maps As you can see, [`require`](04-schema.md#require) takes an object that maps
**package names** (e.g. `monolog/monolog`) to **version constraints** (e.g. **package names** (e.g. `monolog/monolog`) to **version constraints** (e.g.
`1.0.*`). `1.0.*`).
### Package Names ### Package Names
@ -53,7 +53,7 @@ In the previous example we were requiring version
Monolog. This means any version in the `1.0` development branch. It is the Monolog. This means any version in the `1.0` development branch. It is the
equivalent of saying versions that match `>=1.0 <1.1`. equivalent of saying versions that match `>=1.0 <1.1`.
Version constraints can be specified in several ways, read Version constraints can be specified in several ways, read
[versions](articles/versions.md) for more in-depth information on this topic. [versions](articles/versions.md) for more in-depth information on this topic.
### Stability ### Stability
@ -82,7 +82,7 @@ In case of Monolog it will put it into `vendor/monolog/monolog`.
> `vendor` in your `.gitignore`. You really don't want to add all of that > `vendor` in your `.gitignore`. You really don't want to add all of that
> code to your repository. > code to your repository.
You will notice the [`install`](03-cli.md#install) command also created a You will notice the [`install`](03-cli.md#install) command also created a
`composer.lock` file. `composer.lock` file.
## `composer.lock` - The Lock File ## `composer.lock` - The Lock File
@ -94,8 +94,8 @@ to those specific versions.
**Commit your application's `composer.lock` (along with `composer.json`) **Commit your application's `composer.lock` (along with `composer.json`)
into version control.** into version control.**
This is important because the [`install`](03-cli.md#install) command checks This is important because the [`install`](03-cli.md#install) command checks
if a lock file is present, and if it is, it downloads the versions specified if a lock file is present, and if it is, it downloads the versions specified
there (regardless of what `composer.json` says). there (regardless of what `composer.json` says).
This means that anyone who sets up the project will download the exact same This means that anyone who sets up the project will download the exact same
@ -111,9 +111,9 @@ versions from `composer.json` and create the lock file after executing the
[`update`](03-cli.md#update) or the [`install`](03-cli.md#install) command. [`update`](03-cli.md#update) or the [`install`](03-cli.md#install) command.
This means that if any of the dependencies get a new version, you won't get the This means that if any of the dependencies get a new version, you won't get the
updates automatically. To update to the new version, use the updates automatically. To update to the new version, use the
[`update`](03-cli.md#update) command. This will fetch the latest matching [`update`](03-cli.md#update) command. This will fetch the latest matching
versions (according to your `composer.json` file) and also update the lock file versions (according to your `composer.json` file) and also update the lock file
with the new version. with the new version.
```sh ```sh
@ -141,8 +141,8 @@ means that you can automatically `require` any package that is available there.
If you go to the [Packagist website](https://packagist.org/) (packagist.org), If you go to the [Packagist website](https://packagist.org/) (packagist.org),
you can browse and search for packages. you can browse and search for packages.
Any open source project using Composer is recommended to publish their packages Any open source project using Composer is recommended to publish their packages
on Packagist. A library doesn't need to be on Packagist to be used by Composer, on Packagist. A library doesn't need to be on Packagist to be used by Composer,
but it enables discovery and adoption by other developers more quickly. but it enables discovery and adoption by other developers more quickly.
## Autoloading ## Autoloading
@ -152,7 +152,7 @@ For libraries that specify autoload information, Composer generates a
autoloading for free. autoloading for free.
```php ```php
require 'vendor/autoload.php'; require __DIR__ . '/vendor/autoload.php';
``` ```
This makes it really easy to use third party code. For example: If your project This makes it really easy to use third party code. For example: If your project
@ -165,7 +165,7 @@ $log->pushHandler(new Monolog\Handler\StreamHandler('app.log', Monolog\Logger::W
$log->addWarning('Foo'); $log->addWarning('Foo');
``` ```
You can even add your own code to the autoloader by adding an You can even add your own code to the autoloader by adding an
[`autoload`](04-schema.md#autoload) field to `composer.json`. [`autoload`](04-schema.md#autoload) field to `composer.json`.
```json ```json
@ -183,8 +183,8 @@ You define a mapping from namespaces to directories. The `src` directory would
be in your project root, on the same level as `vendor` directory is. An example be in your project root, on the same level as `vendor` directory is. An example
filename would be `src/Foo.php` containing an `Acme\Foo` class. filename would be `src/Foo.php` containing an `Acme\Foo` class.
After adding the [`autoload`](04-schema.md#autoload) field, you have to re-run After adding the [`autoload`](04-schema.md#autoload) field, you have to re-run
[`dump-autoload`](03-cli.md#dump-autoload) to re-generate the [`dump-autoload`](03-cli.md#dump-autoload) to re-generate the
`vendor/autoload.php` file. `vendor/autoload.php` file.
Including that file will also return the autoloader instance, so you can store Including that file will also return the autoloader instance, so you can store
@ -192,12 +192,12 @@ the return value of the include call in a variable and add more namespaces.
This can be useful for autoloading classes in a test suite, for example. This can be useful for autoloading classes in a test suite, for example.
```php ```php
$loader = require 'vendor/autoload.php'; $loader = require __DIR__ . '/vendor/autoload.php';
$loader->add('Acme\\Test\\', __DIR__); $loader->add('Acme\\Test\\', __DIR__);
``` ```
In addition to PSR-4 autoloading, Composer also supports PSR-0, classmap and In addition to PSR-4 autoloading, Composer also supports PSR-0, classmap and
files autoloading. See the [`autoload`](04-schema.md#autoload) reference for files autoloading. See the [`autoload`](04-schema.md#autoload) reference for
more information. more information.
> **Note:** Composer provides its own autoloader. If you don't want to use that > **Note:** Composer provides its own autoloader. If you don't want to use that

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