Workshop: Serious PHP for Real Drupal Developers

Drupal developers are in for a real treat in the next release of Drupal. As of version 8, Drupal will be incorporating the Symfony2 framework and requiring PHP 5.3.4+. Experienced Drupal developers know this means change. Are you ready to level up? Join PHP expert Lorna Jane Mitchell and Drupal trainer Emma Jane Hogbin as they guide you through the core PHP knowledge you'll need for the next release of Drupal. Workshop attendees will learn how to solve common problems using elegant design patterns with object oriented programming. Whether contributing to core, updating contrib modules, or creating custom Drupal products, participants will end the workshop with the skills needed to build elegant, contemporary PHP code for Drupal.

Who is the target audience?

PHP developers who've been focused on Drupal code for the last few years. They are excited about taking advantage of the new features Drupal 8 will be allowing (including PHP 5.3.4 and Symfony2) and want to ensure they are using best practices when refactoring their code. Secondary audience members include: junior and senior developers who've learned their trade on Drupal's code base. They don't have a computer science background and they have learned exclusively "by example". They may be self-conscious of their code and want to be more confident in their ability to create code and not just modify someone else's.

Pre-requisites

Familiarity with Drupal PHP and a desire to improve the quality of the code written for the Drupal project and web sites deployed with Drupal is required. Developers who maintain their own contributed modules, or work on core development are ideally suited for this program. Drupal consultants and companies focused on site building, theming, and "glue code" modules will not find as much value in this workshop and are encouraged to wait for the open source version of the program. Companies purchasing seats may have junior and senior developers attending. For this reason there will be pre-class resources available with introductory information on PHP and Drupal development. The pre-class resources will include Randy Fay's Examples module. A grocery list of system requirements will be provided; however, we do expect companies to provide their staff members with technical support on how to create a developer environment. Every company should have at least one participant able to create their own local developer environment. If your company does not have this capacity, please wait for the open source version of this course.

Curriuculum

What will participants learn? What will they be able to do after the workshop?
  • Describe patterns used in code and frameworks from other projects.
  • Apply best practices for OOP in PHP to the Drupal 8 core and contributed projects.
  • Write more efficient code.
  • Refactor existing code to take advantage of new language features and design patterns.
  • Recognize and refactor Drupal-specific code to use new language features and Symfony.
  • Leverage the capabilities of Symfony when writing new Drupal code.

Format

This class will be delivered as two half-day webinars with supplemental readings and practice exercises.
  • Dates: September 20, September 27.
  • Time: 9AM-12PM (Noon) Eastern Daylight Time
  • Location: WebEx Event Center (support for Linux, OSX and Windows; does not support iOS and other mobile devices)
There will be a recording of the session available within 48 hours of each class. Each company seat will also be granted one PDF license for Lorna's book, PHP Master. The webinars will be kick-off sessions, introducing participants to a hands-on suite of activities. Readings, code snippets, and step-by-step exercises will be available for each part of the workshop to guide participants through the best practices of PHP development for Drupal. To support learners, there will be a class IRC channel. The instructors will be available between webinars at specific times to answer questions and assist learners. We expect there will be many opportunities for peer learning and encourage participants to engage in the IRC channel outside of the office support hours.

Agenda

Part 1

  • Design patterns: MVC, factories, dependency injections as it applies to context in D8
  • Using Object Oriented Programming to solve problems.

Part 2

  • PHP 5.3-specific features
  • Using Symfony2
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Current File : /var/www/drupal-7.19/INSTALL.txt

CONTENTS OF THIS FILE
---------------------

 * Requirements and notes
 * Optional server requirements
 * Installation
 * Building and customizing your site
 * Multisite configuration
 * More information

REQUIREMENTS AND NOTES
----------------------

Drupal requires:

- A web server. Apache (version 2.0 or greater) is recommended.
- PHP 5.2.4 (or greater) (http://www.php.net/).
- One of the following databases:
  - MySQL 5.0.15 (or greater) (http://www.mysql.com/).
  - MariaDB 5.1.44 (or greater) (http://mariadb.org/). MariaDB is a fully
    compatible drop-in replacement for MySQL.
  - Percona Server 5.1.70 (or greater) (http://www.percona.com/). Percona
    Server is a backwards-compatible replacement for MySQL.
  - PostgreSQL 8.3 (or greater) (http://www.postgresql.org/).
  - SQLite 3.4.2 (or greater) (http://www.sqlite.org/).

For more detailed information about Drupal requirements, including a list of
PHP extensions and configurations that are required, see "System requirements"
(http://drupal.org/requirements) in the Drupal.org online documentation.

For detailed information on how to configure a test server environment using a
variety of operating systems and web servers, see "Local server setup"
(http://drupal.org/node/157602) in the Drupal.org online documentation.

Note that all directories mentioned in this document are always relative to the
directory of your Drupal installation, and commands are meant to be run from
this directory (except for the initial commands that create that directory).

OPTIONAL SERVER REQUIREMENTS
----------------------------

- If you want to use Drupal's "Clean URLs" feature on an Apache web server, you
  will need the mod_rewrite module and the ability to use local .htaccess
  files. For Clean URLs support on IIS, see "Clean URLs with IIS"
  (http://drupal.org/node/3854) in the Drupal.org online documentation.

- If you plan to use XML-based services such as RSS aggregation, you will need
  PHP's XML extension. This extension is enabled by default on most PHP
  installations.

- To serve gzip compressed CSS and JS files on an Apache web server, you will
  need the mod_headers module and the ability to use local .htaccess files.

- Some Drupal functionality (e.g., checking whether Drupal and contributed
  modules need updates, RSS aggregation, etc.) require that the web server be
  able to go out to the web and download information. If you want to use this
  functionality, you need to verify that your hosting provider or server
  configuration allows the web server to initiate outbound connections. Most web
  hosting setups allow this.

INSTALLATION
------------

1. Download and extract Drupal.

   You can obtain the latest Drupal release from http://drupal.org -- the files
   are available in .tar.gz and .zip formats and can be extracted using most
   compression tools.

   To download and extract the files, on a typical Unix/Linux command line, use
   the following commands (assuming you want version x.y of Drupal in .tar.gz
   format):

     wget http://drupal.org/files/projects/drupal-x.y.tar.gz
     tar -zxvf drupal-x.y.tar.gz

   This will create a new directory drupal-x.y/ containing all Drupal files and
   directories. Then, to move the contents of that directory into a directory
   within your web server's document root or your public HTML directory,
   continue with this command:

     mv drupal-x.y/* drupal-x.y/.htaccess /path/to/your/installation

2. Optionally, download a translation.

   By default, Drupal is installed in English, and further languages may be
   installed later. If you prefer to install Drupal in another language
   initially:

   - Download a translation file for the correct Drupal version and language
     from the translation server: http://localize.drupal.org/translate/downloads

   - Place the file into your installation profile's translations directory.
     For instance, if you are using the Standard installation profile,
     move the .po file into the directory:

       profiles/standard/translations/

   For detailed instructions, visit http://drupal.org/localize

3. Create the Drupal database.

   Because Drupal stores all site information in a database, you must create
   this database in order to install Drupal, and grant Drupal certain database
   privileges (such as the ability to create tables). For details, consult
   INSTALL.mysql.txt, INSTALL.pgsql.txt, or INSTALL.sqlite.txt. You may also
   need to consult your web hosting provider for instructions specific to your
   web host.

   Take note of the username, password, database name, and hostname as you
   create the database. You will enter this information during the install.

4. Run the install script.

   To run the install script, point your browser to the base URL of your
   website (e.g., http://www.example.com).

   You will be guided through several screens to set up the database, add the
   site maintenance account (the first user, also known as user/1), and provide
   basic web site settings.

   During installation, several files and directories need to be created, which
   the install script will try to do automatically. However, on some hosting
   environments, manual steps are required, and the install script will tell
   you that it cannot proceed until you fix certain issues. This is normal and
   does not indicate a problem with your server.

   The most common steps you may need to perform are:

   a. Missing files directory.

      The install script will attempt to create a file storage directory in
      the default location at sites/default/files (the location of the files
      directory may be changed after Drupal is installed).

      If auto-creation fails, you can make it work by changing permissions on
      the sites/default directory so that the web server can create the files
      directory within it for you. (If you are creating a multisite
      installation, substitute the correct sites directory for sites/default;
      see the Multisite Configuration section of this file, below.)

      For example, on a Unix/Linux command line, you can grant everyone
      (including the web server) permission to write to the sites/default
      directory with this command:

        chmod a+w sites/default

      Be sure to set the permissions back after the installation is finished!
      Sample command:

        chmod go-w sites/default

      Alternatively, instead of allowing the web server to create the files
      directory for you as described above, you can create it yourself. Sample
      commands from a Unix/Linux command line:

        mkdir sites/default/files
        chmod a+w sites/default/files

   b. Missing settings file.

      Drupal will try to automatically create a settings.php configuration file,
      which is normally in the directory sites/default (to avoid problems when
      upgrading, Drupal is not packaged with this file). If auto-creation fails,
      you will need to create this file yourself, using the file
      sites/default/default.settings.php as a template.

      For example, on a Unix/Linux command line, you can make a copy of the
      default.settings.php file with the command:

        cp sites/default/default.settings.php sites/default/settings.php

      Next, grant write privileges to the file to everyone (including the web
      server) with the command:

        chmod a+w sites/default/settings.php

      Be sure to set the permissions back after the installation is finished!
      Sample command:

        chmod go-w sites/default/settings.php

   c. Write permissions after install.

      The install script will attempt to write-protect the settings.php file and
      the sites/default directory after saving your configuration. If this
      fails, you will be notified, and you can do it manually. Sample commands
      from a Unix/Linux command line:

        chmod go-w sites/default/settings.php
        chmod go-w sites/default

5. Verify that the site is working.

   When the install script finishes, you will be logged in with the site
   maintenance account on a "Welcome" page. If the default Drupal theme is not
   displaying properly and links on the page result in "Page Not Found" errors,
   you may be experiencing problems with clean URLs. Visit
   http://drupal.org/getting-started/clean-urls to troubleshoot.

6. Change file system storage settings (optional).

   The files directory created in step 4 is the default file system path used to
   store all uploaded files, as well as some temporary files created by
   Drupal. After installation, you can modify the file system path to store
   uploaded files in a different location.

   It is not necessary to modify this path, but you may wish to change it if:

   - Your site runs multiple Drupal installations from a single codebase (modify
     the file system path of each installation to a different directory so that
     uploads do not overlap between installations).

   - Your site runs on a number of web servers behind a load balancer or reverse
     proxy (modify the file system path on each server to point to a shared file
     repository).

   - You want to restrict access to uploaded files.

   To modify the file system path:

   a. Ensure that the new location for the path exists and is writable by the
      web server. For example, to create a new directory named uploads and grant
      write permissions, use the following commands on a Unix/Linux command
      line:

        mkdir uploads
        chmod a+w uploads

   b. Navigate to Administration > Configuration > Media > File system, and
      enter the desired path. Note that if you want to use private file storage,
      you need to first enter the path for private files and save the
      configuration, and then change the "Default download method" setting and
      save again.

   Changing the file system path after files have been uploaded may cause
   unexpected problems on an existing site. If you modify the file system path
   on an existing site, remember to copy all files from the original location
   to the new location.

7. Revoke documentation file permissions (optional).

   Some administrators suggest making the documentation files, especially
   CHANGELOG.txt, non-readable so that the exact version of Drupal you are
   running is slightly more difficult to determine. If you wish to implement
   this optional security measure, from a Unix/Linux command line you can use
   the following command:

     chmod a-r CHANGELOG.txt

   Note that the example only affects CHANGELOG.txt. To completely hide all
   documentation files from public view, repeat this command for each of the
   Drupal documentation files in the installation directory, substituting the
   name of each file for CHANGELOG.txt in the example.

   For more information on setting file permissions, see "Modifying Linux,
   Unix, and Mac file permissions" (http://drupal.org/node/202483) or
   "Modifying Windows file permissions" (http://drupal.org/node/202491) in the
   Drupal.org online documentation.

8. Set up independent "cron" maintenance jobs.

   Many Drupal modules have tasks that must be run periodically, including the
   Search module (building and updating the index used for keyword searching),
   the Aggregator module (retrieving feeds from other sites), and the System
   module (performing routine maintenance and pruning of database tables). These
   tasks are known as "cron maintenance tasks", named after the Unix/Linux
   "cron" utility.

   When you install Drupal, its built-in cron feature is enabled, which
   automatically runs the cron tasks periodically, triggered by people visiting
   pages of your site. You can configure the built-in cron feature by navigating
   to Administration > Configuration > System > Cron.

   It is also possible to run the cron tasks independent of site visits; this is
   recommended for most sites. To do this, you will need to set up an automated
   process to visit the page cron.php on your site, which executes the cron
   tasks.

   The URL of the cron.php page requires a "cron key" to protect against
   unauthorized access. Your site's cron key is automatically generated during
   installation and is specific to your site. The full URL of the page, with the
   cron key, is available in the "Cron maintenance tasks" section of the Status
   report page at Administration > Reports > Status report.

   As an example for how to set up this automated process, you can use the
   crontab utility on Unix/Linux systems. The following crontab line uses the
   wget command to visit the cron.php page, and runs each hour, on the hour:

   0 * * * * wget -O - -q -t 1 http://example.com/cron.php?cron_key=YOURKEY

   Replace the text "http://example.com/cron.php?cron_key=YOURKEY" in the
   example with the full URL displayed under "Cron maintenance tasks" on the
   "Status report" page.

   More information about cron maintenance tasks is available at
   http://drupal.org/cron, and sample cron shell scripts can be found in the
   scripts/ directory. (Note that these scripts must be customized like the
   above example, to add your site-specific cron key and domain name.)

BUILDING AND CUSTOMIZING YOUR SITE
----------------------------------

A new installation of Drupal defaults to a very basic configuration. To extend
your site, you use "modules" and "themes". A module is a plugin that adds
functionality to Drupal, while a theme changes the look of your site. The core
of Drupal provides several optional modules and themes, and you can download
more at http://drupal.org/project/modules and http://drupal.org/project/themes

Do not mix downloaded or custom modules and themes with Drupal's core modules
and themes. Drupal's modules and themes are located in the top-level modules and
themes directories, while the modules and themes you add to Drupal are normally
placed in the sites/all/modules and sites/all/themes directories. If you run a
multisite installation, you can also place modules and themes in the
site-specific directories -- see the Multisite Configuration section, below.

Never edit Drupal's core modules and themes; instead, use the hooks available in
the Drupal API. To modify the behavior of Drupal, develop a module as described
at http://drupal.org/developing/modules. To modify the look of Drupal, create a
subtheme as described at http://drupal.org/node/225125, or a completely new
theme as described at http://drupal.org/documentation/theme

MULTISITE CONFIGURATION
-----------------------

A single Drupal installation can host several Drupal-powered sites, each with
its own individual configuration.

Additional site configurations are created in subdirectories within the 'sites'
directory. Each subdirectory must have a 'settings.php' file, which specifies
the configuration settings. The easiest way to create additional sites is to
copy the 'default' directory and modify the 'settings.php' file as appropriate.
The new directory name is constructed from the site's URL. The configuration for
www.example.com could be in 'sites/example.com/settings.php' (note that 'www.'
should be omitted if users can access your site at http://example.com/).

Sites do not have to have a different domain. You can also use subdomains and
subdirectories for Drupal sites. For example, example.com, sub.example.com, and
sub.example.com/site3 can all be defined as independent Drupal sites. The setup
for a configuration such as this would look like the following:

  sites/default/settings.php
  sites/example.com/settings.php
  sites/sub.example.com/settings.php
  sites/sub.example.com.site3/settings.php

When searching for a site configuration (for example www.sub.example.com/site3),
Drupal will search for configuration files in the following order, using the
first configuration it finds:

  sites/www.sub.example.com.site3/settings.php
  sites/sub.example.com.site3/settings.php
  sites/example.com.site3/settings.php
  sites/www.sub.example.com/settings.php
  sites/sub.example.com/settings.php
  sites/example.com/settings.php
  sites/default/settings.php

If you are installing on a non-standard port, the port number is treated as the
deepest subdomain. For example: http://www.example.com:8080/ could be loaded
from sites/8080.www.example.com/. The port number will be removed according to
the pattern above if no port-specific configuration is found, just like a real
subdomain.

Each site configuration can have its own site-specific modules and themes in
addition to those installed in the standard 'modules' and 'themes' directories.
To use site-specific modules or themes, simply create a 'modules' or 'themes'
directory within the site configuration directory. For example, if
sub.example.com has a custom theme and a custom module that should not be
accessible to other sites, the setup would look like this:

  sites/sub.example.com/
    settings.php
    themes/custom_theme
    modules/custom_module

NOTE: for more information about multiple virtual hosts or the configuration
settings, consult http://drupal.org/getting-started/6/install/multi-site

For more information on configuring Drupal's file system path in a multisite
configuration, see step 6 above.

MORE INFORMATION
----------------

- See the Drupal.org online documentation:
  http://drupal.org/documentation

- For a list of security announcements, see the "Security advisories" page at
  http://drupal.org/security (available as an RSS feed). This page also
  describes how to subscribe to these announcements via e-mail.

- For information about the Drupal security process, or to find out how to
  report a potential security issue to the Drupal security team, see the
  "Security team" page at http://drupal.org/security-team

- For information about the wide range of available support options, visit
  http://drupal.org and click on Community and Support in the top or bottom
  navigation.

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