Installation FAQ/da

Indhold:

Installation på din computer

LimeSurvey kan installeres på din computer med MAMP/XAMPP eller et hvilket som helst andet system. Husk, at din computer ikke er en webserver - den er ikke tilgængelig via internettet for nogen anden bruger.

For at gøre din undersøgelse tilgængelig for andre brugere via nettet, skal du enten:

• ejer en server eller et webhotel fra en værtsudbyder
• eller find en LimeSurvey-specialiseret værtsudbyder

Starter installation

Hvordan kan jeg oprette en database og en bruger i MySQL med kommandolinjeadgang?

Du skal indtaste kommandoerne nedenfor i din MySQL:

• create database ;<your_database_name> create database ;

• create user ;<your_database_username> create user ;

• create user @localhost;<your_database_username> create user @localhost;

• set password for = PASSWORD(' ');<your_database_username> set password for = PASSWORD(' ');<your_database_password> set password for = PASSWORD(' ');

• set password for @localhost = PASSWORD(' ');<your_database_username> set password for @localhost = PASSWORD(' ');<your_database_password> set password for @localhost = PASSWORD(' ');

• grant all on .* to ' ';<your_database_name> grant all on .* to ' ';<your_database_username> grant all on .* to ' ';

• grant all on .* to ' '@'localhost';<your_database_name> grant all on .* to ' '@'localhost';<your_database_username> grant all on .* to ' '@'localhost';

I terminal, <your_database_name> , <your_database_username> , og <your_database_password> skal erstattes med de tilsvarende/ønskede værdier.

Hvad hvis jeg ikke kan oprette en database gennem et script?

Normalt opretter scriptet en ny database og derefter tabelstrukturen. Men hvis din server/ISP ikke giver dig administratorrettigheder til at oprette en ny database i MySQL, skal du kontakte din serveradministrator for at få oprettet den nødvendige database (eller oprette den selv, hvis du modtager de nødvendige tilladelser). Den nyoprettede tomme database bør indeholde de relevante adgangsrettigheder (f.eks.: læse/skrive/opret). Derefter skulle du være i stand til at starte LimeSurvey-installationen, som vil oprette tabellerne i den nyoprettede database.

Blank side ved adgang til installationssiden

Dette problem opstår ikke i LimeSurvey-installationen, men i PHP-installationen.

• Bekræft, at du har MySQL PHP-modulet (php-mysql) installeret.
• Bekræft, at din PHP-installation indlæser PHP.ini-filen ændrer og analyserer ikke andre PHP.INI-filer på dit system.
• Bekræft placeringen og tilladelserne for følgende indstilling i din PHP.ini:

upload_tmp_dir="/temp"

session.save_path="/temp"

• Bekræft, at din server kører en passende PHP-version.

Fejlmeddelelser på grund af ikke-eksisterende ressourcer

Nogle gange uploades filer ikke korrekt eller er ødelagte under uploadprocessen. Dette fører til flere forskellige fejlmeddelelser. De fleste af dem refererer til en fil eller funktion i en fil, som ikke kan findes.

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

Requirements page

What is the mbstring (Multibyte String Functions) library?

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://<your_server>/<your_limesurvey_directory>/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

Stuck at checking file system permissions

If SELinux is activated (primarily on CentOS), then you might get an error that the file system permissions are not correct, even if the list of directories is empty. SELinux prevents writing even though the permissions are for example on 777 or 755. To configure SELinux correctly for your server - check out the SELinux documentation.

After database creation

Blank page after database creation

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"

Fix

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.

When accessing the admin page, the browser keeps running and will eventually fail to show it

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.

The line number may be different depending on your LimeSurvey version.

Fix

This may be caused by the mbstring.func_overload setting. Change the following setting in the php.ini file:

mbstring.func_overload = 0

This means no function overloading. See the PHP manual for this setting: Function Overloading Feature.

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 '+'.

  Other characters may also induce the same behavior.

Fix

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

After installation

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