Bridging is the process in which two web software programs are integrated in some way. The best Joomla extension for bridging with phpBB3 is called Mehdi's phpBB THREE bridge
Bridging is a complicated process, so this tutorial is targeted at intermediate Joomla administrators
This bridge allows you to separately enable visual integration and user integration. It requires PHP 5 to function
You'll need access to phpMyAdmin, an FTP client, and a text editor. You'll also need to have already installed phpBB3
As with all extensions we'll be showing you, start by going to extensions.joomla.org. Then, navigate to the Bridges / Forum bridges category and find the page for Mehdi's PhpBB THREE bridge
1) Click Download
 
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Before we begin, you'll need to ensure that your main administrator accounts in Joomla and phpBB3 have the same name (i.e. admin)
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If you have many phpBB3 users, you'll probably also want to ensure that as many users as possible register a new Joomla user account with the identical name before proceeding
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If all phpBB3 users do not have a corresponding Joomla account, those users that don't will have to reset their passwords in Joomla
2) Let us begin. Scroll down to the Download now! button
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3) Click it

4) Save the file to your computer

5) Locate and extract the archive
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If your version of phpBB3 matches the number specified in this folder's name, you're in luck -- you don't have to edit any of phpBB3's files

6) Simply go inside this folder and upload all files contained in the hacked folder to your phpBB3 root directory, then do the same with everything in the bridge folder

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If your version doesn't match, or if you're not sure what your version is, you'll have to edit and rename some files by hand
7) Start by downloading your entire phpBB3 directory to a subfolder here
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8) When finished, copy the files quickprocess2.bat and begin2.txt from the others folder to the folder you just created

9) Hold down CTRL and select both files
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10) Go Up
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11) Press CTRL+C to copy
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12) Press CTRL+V to paste, then scroll down to find the files

13) Double click the .bat file to run it
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14) This command prompt will appear. Press a key to continue

15) Again, press a key

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Notice -- many of the file sizes have changed to 1 KB
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Scroll down
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The original files have been moved down here, with inc_ added in the front

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Scroll back up
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16) Go inside the adm folder

17) Rename index.php in the same manner

18) Now, copy the index.php file that was created in the previous directory to here and open it with your favorite text editor

19) Adjust the current folder

20) Add a period to refer to the previous directory

21) Press CTRL+S to save
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Return to Windows Explorer
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22) Press CTRL+C to copy this file, then go up one directory

23) Rename file.php as before

24) Paste the file you copied with CTRL+V
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25) Rename this one to file.php

26) Now, edit this file
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27) Change index to file
 
28) Then change the folder to download
 
29) Press CTRL+SÂ to save
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30) Go up two directories
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31) Go into the phpBB directory that was included with the bridge files

32) Enter the hacked directory

33) Then includes
 
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34) UTF
 
35) Copy utf_tools.php
 
36) Return to the main directory

37) Enter our phpBB3 directory again
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38) Go to includes

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39) UTF
 
40) Rename the existing file as before

41) Paste the copied file
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42) Then, open the inc_Â file with the text editor

43) Add the following code to this line

44) Save and return to the main folder
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45) Now, go to bridge
 
46) Open the selected file

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Here's where you choose which kind of integration you'll want to enable later. For now, leave this alone
47) Update the URL and relative path
 
48) Save the file
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49) Now, select all the files in this directory and copy them to our working phpBB3 directory

50) Paste the files
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51) Overwrite all when prompted

52) Press CTRL+AÂ to select all files in this directory

53) Now, upload everything to the phpBB3 folder on your FTP
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54) Before testing the changes we made, we must first go to phpMyAdmin and execute the bridge SQL file

55) Choose your phpbb database

56) Go to Import
 
57) Browse for the SQL file
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It's in the others directory

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Scroll down
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58) Click Go
 
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The query was executed successfully; the table has been created

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Scroll the menu frame down
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If your Joomla and phpBB installations share a database, skip the following step
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59) Click the link to the phpbb_users table. If yours is called something else, take note of that, since you'll have an extra step later

60) Click Operations
 
61) Scroll down until you see Copy table to
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62) Specify the Joomla database

63) Type phpbb_users
 
64) Switch to the copied table

65) Click Go
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66) Now, go to Joomla and install the component package contained in the others folder
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For assistance with installing extensions, watch the second tutorial in this series
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67) Now, choose the menu to which we'll add a phpBB link and go to its item manager

Scroll right
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68) Click New
 
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Scroll down
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69) Click External Link
 
70) Enter a title
 
71) Enter a link to your phpBB folder

72) Click Save
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Scroll down and right
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73) Make note of the ItemIDÂ for the phpBB menu link; you'll need it later

74) Now, let's verify that phpBB3 still works. Go to its Admin CP
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No error messages, so everything seems to have worked so far

75) Click Styles
 
76) Next to bridgesilver, click Install
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77) Make this the default

78) Click Submit
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79) Go Back
 
80) Click Deactivate
 
81) Now, go to General and scroll down
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82) Under Client Communication, click Authentication
 
83) Select Joomla15 from the list

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Scroll down
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84) Click Submit
 
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There's one final step before enabling the bridge
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In the "others" folder, there is a PHP script called quickmerge2.php that will merge the phpBB user database with Joomla's
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At the top of that file, there is a PHP variable called $myTable. If your phpBB user table is not phpbb_users, you will need to change that variable to the correct value
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Then, upload the file to your root Joomla directory, run the script from your browser, and delete it from your FTP
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After you run the file, you should see a page similar to this one. This phpBB3 installation had no additional users
85) All that remains is to update the config file we edited earlier. Re-open joomphpbb_conf2.php
86) Change this to 3 to enable visual & user integration

87) Enter the ItemID noted earlier

88) Save and upload this file, then go to the Joomla frontend to see if everything works
89) Click the phpBB link
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Visual integration seems to have worked! Let's see about user integration
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Scroll down
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As you can see, the Editor account we were logged in to in Joomla was automatically transferred over to phpBB
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At last, the bridging was a success!
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This is the end of the tutorial. You now know how to bridge phpBB3 with Joomla