Installation FAQ/nl

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Installatie op je eigen computer

LimeSurvey kan worden geïnstalleerd op je computer met MAMP/XAMP o.i.d. Maar bedenk wel dat als je computer geen webserver is de applicatie niet door andere gebruikers kan worden benaderd.

Dan moet je je enquête via het internet beschikbaar maken, je moet:

• own a server or a web space from a host provider
• or find a LimeSurvey-specialized host provider

  An installation on your computer is not done to share your survey on the internet!

Start installatie

How can I create a database and a user in MySQL with command-line access?

You have to enter the commands below in your MySQL:

• create database <jouw_database_naam>;

• create user <jouw_database_gebruikersnaam>;

• create user <jouw_database_gebruikersnaam>@localhost;

• set password for <jouw_database_gebruikersnaam> = PASSWORD('<jouw_database_wachtwoord>');

• set password for <jouw_database_gebruikersnaam>@localhost = PASSWORD('<jouw_database_wachtwoord>');;

• grant all on <jouw_database_naam>.* to '<jouw_database_gebruikersnaam>';

• grant all on <jouw_database_naam>.* to '<jouw_database_gebruikersnaam>'@'localhost';</syntaxhighlight>;

Vervang hierbij <jouw_database_naam>, <jouw_database_gebruikersnaam> en <jouw_database_wachtwoord> door de respectievelijke waarden.

Wat doe ik als ik geen database kan aanmaken via een script?

Normaal gesproken maakt het script een nieuwe database aan, en vult deze met de tabelstructuur. Mocht je echter een server/provider hebben die geen autorisatie geeft om een MySQL-database aan te maken, neem dan contact op met deze provider. Zij moeten dan een lege database voor je aanmaken met de goede rechten (read/write/create). Of je die rechten toch geven. Start daarna de LimeSurvey installatie om de structuur toe te voegen in de database.

Blank page when accessing the install page

This problem doesn't occur within the LimeSurvey installation but within the PHP installation.

• Verify you have the MySQL PHP module (php-mysql) installed.
• Verify your PHP install is loading the PHP.ini file your are modifying and not parsing other PHP.INI files on your system.
• Verify the location and permissions of the following setting in your PHP.ini:

upload_tmp_dir="/temp"

session.save_path="/temp"

• Verify that your server runs a suitable PHP version.

Error messages due to non-existing resources

Sometimes, files are not uploaded correctly or are broken during the upload process. This leads to several different error messages. Most of them refer to a file or function within a file which can't be found.

Solution: Re-upload all files using the binary mode of your FTP programme.

Vereisten

Wat is de mbstring (Multibyte String Functions) bibliotheek?

The mbstring library is a PHP library that can convert char sets from one language to another. You need it if you want to run LimeSurvey. To check if it is already installed, open the URL from a web browser:

http://<je_server>/<je_limesurvey_map>/admin/install/phpinfo.php

A lot of information will be shown. Search for the string 'mbstring' in the Configuration section. If you find the mbstring section, then all should be well and you can continue with your LimeSurvey installation!

If you don't find the mbstring section, you might have a problem on your hands. There are three possible scenarios:

• If it's your host provider's server, ask for the activation of that extension in PHP or for further information on how you can activate it - if you have a good administration panel for your server, you may be able to activate it yourself
• If it's your own Linux server, you may have to re-compile PHP and include the mbstring library. Ask the Linux experts how to do that. However, you can install it using your Linux package manager, which is mostly available in all the Linux distributions nowadays
  • If you are using a version of Linux that supports 'yum' (CentOS, RedHat, Fedora)...
    • ...use the terminal (as a super user) and type: yum install php-mbstring
    • ...make sure to update /etc/php.ini and uncomment the various mbstring params
    • ...make sure to restart apache after installing it: /etc/init.d/httpd restart
• If it's your own Windows server, search for php.ini on your system, open it with an editor, and search for mbstring. Most probably, the line that contains the string is commented out with a semicolon. Remove the semicolon, save and restart your web server

Moeilijkheden met bestandsrechten

Als SELinux is geactiveerd (meestal op CentOS) dan kun je de foutmelding krijgen dat de bestandsrechten niet goed staan zelfs als geen mappen zijn. SELinux voorkomt schrijven zelfs als de permissie 777 of 755 zijn. Toelichting bij het configureren van SELinux : SELinux documentation.

Na de aanmaak van de database

Blanco pagina na de aanmaak van de database

Symptoms

• LimeSurvey is installed correctly and the database was created, but instead of the admin page, you get an empty page
• Web server log shows "Fatal error: Call to a member function on a non-object in /path/to/limesurvey/admin/login_check.php on line 69"

Oplossing

This is probably related to an incorrect setting for $rooturl or $rootdir in config.php. The file config.php attempts to set $rootdir correctly by calling dirname('''FILE'''). While this usually works, it can be upset when LimeSurvey is installed in a user's home or public_html directory and the home directory is mounted over NFS. To set up the $rootdir manually, (your shell or pwd command may show you a path like /disks/hostname/home/username/public_html/limesurvey), try using /home/username/public_html/limesurvey.

Als ik de beheerpagina oproep, blijft de browser bezig, maar uiteindelijk krijg ik een foutmelding

Symptoms

• LimeSurvey is installed correctly and the database was created. However, when you access the admin page, the browser keeps running and will eventually fail to show the page
• When you check the web server access log, its size has become quite big (in some cases, more than 2 GB)
• Inside the access log, you get this message filling the log:

  fread() [function.fread]: Length parameter must be greater than 0 in /limesurvey/classes/php-gettext/streams.php on line 120.

Waarbij het nummer afhankelijk is van de LimeSurvery-versie.

Oplossing

Dit kan zitten in de mbstring.func_overload instelling. Voeg in php.ini de volgende regel toe:

 	
mbstring.func_overload = 0

Dit betekent dat er geen functie-overloading zal plaatsvinden. Bekijk de PHP Handleiding voor meer informatie.

When accessing the admin page, the browser reports Fatal error: Call to a member function gT() on a non-object in login_check.php on line 76

Symptoms

• LimeSurvey is installed correctly and the database was created. But when redirected to the admin page, the browser displayed the listed error.
• $rootdir and $rooturl are correctly set in config.php.
• The disk path name for limesurvey installation directory includes one of the following characters: '(',')' or '+'.

  Dit gedrag kan ook door andere karakters veroorzaakt worden.

Oplossing

Move/rename the LimeSurvey installation directory so that the path name includes non of the following characters: '(',')' or '+' characters.

Na de installatie

For all the other issues that may occur after a successful installation, please refer to the troubleshooting page.