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<title>Moodle Docs: Frequently Asked Questions (FAQ)</title>
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<h2>Frequently Asked Questions (FAQ)</h2>
<p class="normaltext">This page contains answers to some of the most
frequently asked questions by people installing Moodle. If you have
followed the <a href="http://moodle.org/doc/?file=install.html">installation instructions</a> but
you still have a problem, then this page is probably the best place to be. </p>
<p class="normaltext">If you don't find your answer here try the <a href="http://moodle.org/mod/forum/index.php?id=5">Using
Moodle</a> course on moodle.org. Start by searching the forums using a few keywords,
in case your problem has already been discussed. If you don't find
anything, then try posting your question into the appropriate forum - somebody will
usually be be able to help you.</p>
<p class="normaltext">Use this list to jump to the appropriate answer below:</p>
<p class="questionlink"><a href="#filenotfound">Whenever I try to access or view a file that I uploaded, I get an error &quot;File not Found&quot;</a></p>
<p class="questionlink"><a href="#php">PHP - is it installed and what version do I have?</a></p>
<p class="questionlink"><a href="#blankpages">Why are all my pages blank?</a></p>
<p class="questionlink"><a href="#errorgetstring">My pages show fatal errors such as : call to undefined function: get_string()</a></p>
<p class="questionlink"><a href="#headerssent">Why do I keep getting error messages about &quot;headers already sent&quot;?</a></p>
<p class="questionlink"><a href="#failedopen">I keep getting this error: Failed opening required '/web/moodle/lib/setup.php'</a></p>
<p class="questionlink"><a href="#quotes">Any text I add with an apostrophe (') or a quote (&quot;) causes errors or comes up with a slash added</a></p>
<p class="questionlink"><a href="#sessiontmp">I keep getting error messages about session_start</a></p>
<p class="questionlink"><a href="#fixdirroot">When I go to the admin page, I get told to make dirroot blank!</a></p>
<p class="questionlink"><a href="#loginsetting">I login but the login link doesn't change. I am logged in and can navigate freely.</a></p>
<p class="questionlink"><a href="#resource1">When trying to add a resource I receive error messages.</a></p>
<p class="questionlink"><a href="#noadmin">During the initial setting-up process, I never get asked to create an admin account!</a></p>
<p class="questionlink"><a href="#nologin">I can't log in at all- I just stay stuck on the login screen.</a></p>
<p class="questionlink"><a href="#backup">How do I backup my Moodle site?</a></p>
<p class="questionlink"><a href="#langsetting">Why doesn't my Moodle site display the time & date correctly?</a></p>
<p class="questionlink">&nbsp;</p>
<h3 class="question"><a name="filenotfound"></a>Whenever I try to access or view
a file that I uploaded, I get an error &quot;File not Found&quot;</h3>
<p class="answer">For example: Not Found: The requested URL /moodle/file.php/2/myfile.jpg
was not found on this server. </p>
<p class="answer">Your web server needs to be configured to allow the part of
the URL after a script name to be passed directly to the script. This is usually
enabled in Apache 1, but is usually disabled by default in Apache 2. To turn
it on, add this line to your httpd.conf, or to a .htaccess file in your local
directory (see the <a href="./?file=install.html#webserver">Install documentation</a>
for more details): </p>
<p class="answercode"><b>AcceptPathInfo</b> on</p>
<p class="answer">Note, this will ONLY work for Apache versions 2.x. </p>
<p class="answer">If you are not using Apache 2 and you still have this problem
(unlikely) then you can switch Moodle to use an alternative method. The disadvantages
are a slight loss of performance for your users and you won't be able to use
relative links within HTML resources. </p>
<p class="answer">To use this alternative method: login as Admin, go into the
"Configure Variables" page and change the setting for "<b>slasharguments</b>".
You should now be able to access your uploaded files.</p>
<p class="answer">&nbsp;</p>
<h4 class="question"><a name="php"></a>PHP - is it installed and what version
do I have?</h4>
<p class="answer">Make a new file on your web site called info.php, containing the following
text, and call it from your browser:</p>
<p class="answercode">&lt;?PHP phpinfo() ?&gt;</p>
<p class="answer">If nothing happens then you don't have PHP installed. See the
installation docs for some information about where to download it for your computer.</p>
<p class="answer">&nbsp;</p>
<h4 class="question"><a name="blankpages"></a>Why are all my pages blank? </h4>
<p class="answer">Check the dirroot variable in config.php. You must use complete,
absolute pathnames, eg:</p>
<p class="answercode"> $CFG->dirroot = "d:\inetpub\sites\www.yoursite.com\web\moodle";</p>
<p>&nbsp; </p>
<p class="answer">Redhat Linux platform please see: <a href="http://moodle.org/doc/?file=installamp.html">Redhat Linux</a></p>
<p>&nbsp; </p>
<h4 class="question"><a name="errorgetstring"></a>My pages show fatal errors such
as : call to undefined function: get_string()</h4>
<p class="answer">If you see errors like:</p>
<p class="answercode">Parse error: parse error, unexpected T_VARIABLE in c:\program
files\easyphp\www\moodle\config.php on line 94 <br>
Fatal error: Call to undefined function: get_string() in c:\program files\easyphp\www\moodle\mod\resource\lib.php
on line 11</p>
<p class="answer">then it's likely you have left out a semi-colon or ending quote
from a line in config.php (previous to line 94).</p>
<p class="answer">Another reason could be that you have opened config.php in a
program like Word to edit it, and saved it as a HTML web page, instead of a
proper text file.</p>
<p>&nbsp;</p>
<h4 class="question"><a name="headerssent"></a>Why do I keep getting error messages
about &quot;headers already sent&quot;?</h4>
<p class="answer">If you see errors like this:</p>
<p class="answercode">Warning: Cannot add header information - headers already
sent by (output started at /webs/moodle/config.php:87) in /webs/moodle/lib/moodlelib.php
on line 1322 </p>
<p class="answercode"> Warning: Cannot add header information - headers already
sent by (output started at /webs/moodle/config.php:87) in /webs/moodle/lib/moodlelib.php
on line 1323 </p>
<p class="answercode"> Warning: Cannot add header information - headers already
sent by (output started at /webs/moodle/config.php:87) in /webs/moodle/login/index.php
on line 54 </p>
<p class="answer">You have blank lines or spaces after the final ?> in your config.php
file. Sometimes text editors add these - for example Notepad on Windows - so
you may have to try a different text editor to remove these spaces or blank
lines completely. </p>
<p class="answer">&nbsp;</p>
<h4 class="question"><a name="failedopen"></a>I keep getting this error: Failed
opening required '/web/moodle/lib/setup.php'</h4>
<p class="answer">In your config.php, the setting that you use for the dirroot
variable must be the <strong>complete path from the root of your server's hard
drive</strong>.</p>
<p class="answer">Sometimes people only use the path from their home directory,
or relative to the root of the web server directory.</p>
<p class="answer">&nbsp;</p>
<h4 class="question"><a name="quotes" id="quotes"></a>Any text I add with an apostrophe
(') or a quote (&quot;) causes errors or comes up with a slash added</h4>
<p class="answer">Problems caused by apostrophes are caused by incorrect &quot;magic
quotes&quot; settings. Moodle requires the following settings (which are usually
the default):</p>
<p class="answercode">magic_quotes_gpc = On<br>
magic_quotes_runtime = Off</p>
<p class="answer">See the section on <a href="http://moodle.org/doc/?file=install.html#webserver">webserver
configuration</a> in the Installation docs for more details.</p>
<h4 class="question"><a name="sessiontmp"></a>I keep getting error messages about session_start</h4>
<p class="answer">If you see errors like this:</p>
<p class="answercode">Warning: session_start() [function.session-start]: open(/tmp\sess_d40f380d37d431fc1516e9a895ad9ce0, O_RDWR) failed: No such file or directory (2) in G:\web\moodle\lib\setup.php on line 123</p>
<p class="answercode">Warning: session_start() [function.session-start]: open(/tmp\sess_d40f380d37d431fc1516e9a895ad9ce0, O_RDWR) failed: No such file or directory (2) in G:\web\moodle\lib\setup.php on line 123</p>
<p class="answercode">Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at G:\web\moodle\lib\setup.php:1) in G:\web\moodle\lib\setup.php on line 123</p>
<p class="answer">... these are all related to the fact that PHP is failing to save
"session" files on your hard disk (in a directory called /tmp). Usually the
reason is that you don't HAVE a directory called /tmp on your computer. This
is usually the case with Windows installations.
<p class="answer">The solution is to fix the PHP setting for this path to point to a real directory. You can do this in your php.ini file:</p>
<p class="answercode">session.save_path = C:\temp</p>
<p class="answer">or otherwise in a .htaccess file in your main moodle directory:</p>
<p class="answercode">php_value session.save_path "/home/moodle/sessions"</p>
<h4 class="question"><a name="fixdirroot"></a>When I go to the admin page, I get told to make dirroot blank!</h4>
<p class="answer">If you see errors like this in Moodle 1.0.9:</p>
<table class=generalbox cellSpacing=0 cellPadding=5 align=center border=0>
<tbody>
<tr>
<td bgColor=#ffbbbb>Please fix your settings in config.php:
<p>You have:
<p>$CFG-&gt;dirroot = "/home/users/fred/public_html/moodle";
<p>but it should be:
<p>$CFG-&gt;dirroot = "";</p></td></tr></tbody></table>
<p class="answer">then you have encountered a small bug that occurs on some servers. The problem is with the error-checking mechanism, not with your actual path. To fix it, find this line (line 66) in the file admin/index.php: </p>
<p class="answercode">if ($dirroot != $CFG->dirroot) {</p>
<p class="answer">and change it to this:</p>
<p class="answercode">if (!empty($dirroot) and $dirroot != $CFG->dirroot) {</p>
<h4 class="question"><a name="loginsetting"></a>I login but don't appear to be. I am logged in and can navigate freely.</h4>
<p class="answer">Make sure the URL in your $CFG->wwwroot setting is exactly the same as the one you are actually using to access the site.</p>
<h4 class="question"><a name="resource1"></a>When trying to add a resource I receive error messages.</h4>
<p class="answer">Assuming you are using Apache, then it's quite likely that your setting in config.php for $CFG->wwwroot is different from the actual URL you are using to access the site. Also try turning off "<b>secureforms</b>" in the admin settings.</p>
<h4 class="question"><a name="noadmin"></a>During the initial setting-up process, I never get asked to create an admin account!</h4>
<p class="answer">This is a known bug in versions of Moodle up to 1.0.9, now fixed in the main code and version 1.1.</p>
<p class="answer">It doesn't affect all people, it only occurs when the person installing Moodle has a
cookie in their browser from another program on the same site, called "user", "admin", or "teacher".</p>
<p class="answer">Quick fixes include deleting those cookies from your browser before installing, using a different browser, or editing the file moodle/admin/user.php to insert these lines near the top:</p>
<p class="answercode">unset($user);<br />unset($admin);<br />unset($teacher);</p>
<p class="answer">After performing any of these fixes it might be a good idea to drop all the tables in your database and re-install again from scratch.</p>
<h4 class="question"><a name="nologin"></a>I can't log in - I just stay stuck on the login screen.</h4>
<p class="answer">The most common cause for this is that your own computer (not your Moodle server)
has a firewall that is stripping referrer information from the browser.</p>
<p class="answer">This can be fixed for everyone using your server by editing the Moodle configuration
page and changing the variable "<b>secureforms</b>" to "No".</p>
<p class="answer">Another possible cause of this problem is that sessions are not configured
properly on the server. You can test this by calling the script
http://yourserver/moodle/lib/session-test.php.</p>
<h4 class="question"><a name="backup"></a>How do I backup my whole Moodle site?</h4>
<p class="answer">There are two main things you need to make a copy of: the database and the uploaded files. The Moodle scripts themselves are less important, since you can always download a fresh copy if you have to.</p>
<p class="answer">There are many ways to do such backups. Here is an outline of a little script you can run on Unix to backup the database (it works well to have such a script run daily via a cron task</p>
<p class="answercode">cd /my/backup/directory</p>
<p class="answercode">mv moodle-database.sql.gz moodle-database-old.sql.gz</p>
<p class="answercode">mysqldump -h example.com -u myusername --password=mypassword -C -Q -e -a mydatabasename > moodle-database.sql</p>
<p class="answercode">gzip moodle-database.sql</p>
<p class="answer">For the files, you can use rsync regularly to copy only the changed files to another host:</p>
<p class="answercode">rsync -auvtz --delete -e ssh mysshusername@example.com:/my/server/directory /my/backup/directory/</p>
<h4 class="question"><a name="langsetting"></a>Why doesn't my Moodle site display the time & date correctly?</h4>
<p class="answer">Some configuration is required by the site admin if your Moodle site is on a Windows based server. Windows uses specific language and region/country codes. Please navigate to <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt_language_strings.asp" target="_blank">Language codes</a> and <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt_country_strings.asp" target="_blank">Country/region codes</a> for information and codes specific to Windows servers. Please use this information when you visit the "configure variables" page to select "locale" and "country" settings.</p>
<h2>&nbsp;</h2>
<hr>
<p align="center" class="normaltext"><a href='ma&#105&#108t&#111:ma%72%74in@%6d%6fo%64%6c%65.o%72g' title='mar&#116&#105n@&#109oo&#100&#108&#101&#46&#111&#114g'>Suggest
a new FAQ</a> (include the answer!)</p>
<hr>
<p align="right"><strong><em>Thanks to John Eyre for helping to maintain this
FAQ.</em></strong></p>
<p align="CENTER"><font size="1"><a href="." target="_top">Moodle Documentation</a></font></p>
<p align="CENTER"><font size="1">Version: $Id: faq.html,v 1.6 2003/03/30 13:54:28
moodler Exp $</font></p>
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