X-Cart:Server Requirements (X-Cart 4.3)

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IMPORTANT! These system requirements apply to all X-Cart versions of the 4.3 branch.
X-Cart 4.3or above

Operating system

OS logos.png

PHP configuration

PHP version

Version 4.3.0 - 5.x.

php.ini settings

required values:

safe_mode = off
file_uploads = on
magic_quotes_sybase = off
sql.safe_mode = off
allow_url_fopen = on
ini_set = on
memory_limit >= 32M

recommended values:

disable_functions = NULL
post_max_size >= 2M
upload_max_filesize >= 2M
max_execution_time >= 30
memory_limit >= 64M
max_input_time >= 30
sendmail_from = ...@domain.com (an email address, from which sending mail is allowed)

PHP extensions




FTP - to be able to upload files to GoogleBase
Zlib - for data compression on the fly
GDLib 2.0 or better - required for automatic generation of product thumbnails form product images, for the 'Image Verification' module and for cache generation in the 'Detailed Product Images' module. GDLib must be compiled with libJpeg (ensure that PHP is configured with the option --with-jpeg-dir=DIR, where DIR is the directory where libJpeg is installed).
Mcrypt - highly recommended to speed up the Blowfish data encrypting process
xml/Expat - for Intershipper, UPS or USPS shipping modules.
cURL - for some of the online credit card processing modules and for shipping modules.
OpenSSL - for iDEAL Advanced and iDEAL RaboBank Professional payment modules.

Other recommendations

  • PHP should be compiled with the "--enable-memory-limit" option (strongly recommended).
  • PHP should be compiled with the --enable-mbstring option. mbstring is designed to handle languages which use multibyte character encodings. For more information and a list of supported encodings, see the corresponding section of PHP manual. If you plan to use languages that require UTF-8 encoding, set the mbstring.func_overload value to 7.
  • If you wish to use an external mail program (like qmail or postfix) instead of the PHP "mail()" function, this mail program must be installed and configured.
  • If you wish to use an SMTP server instead of the PHP "mail()" function to send mail from the store, the SMTP server must be installed and configured.
  • PHP function "exec()" must be allowed for the correct functioning of most of the CC payment processing modules used with X-Cart (SaferPay, Credomatic, CyberSource, HSBC, Ogone, Ogone Web, PayBox, PaySystems Client, VaultX), HTTPS modules (Net::SSLeay, CURL, OpenSSL, https_cli), GnuPG/PGP.
  • PHP functions "popen()" & "pclose()" must be allowed for the correct functioning of some HTTPS modules (CURL, Net::SSLeay, OpenSSL, https_cli), payment modules (Saferpay, CyberSource), SMTP mailer (PHPMailer).

For help on PHP configuration settings, visit https://www.php.net.

MySQL configuration

MySQL version

Supported versions: 3.23 - 5.X

Recommended version: 4.1.22

Not recommended versions: 5.0.50, 5.0.51 (These versions contain some known bugs that may prevent X-Cart from operating correctly).

Note: The most up-to-date information on compatibility with specific versions of MySQL is available on the site https://www.x-cart.com.

MySQL server settings

MAX_CONNECTIONS >= 200 (required)

MySQL user privileges

Required basic privileges:


Privileges, required for software installation/upgrade:


MySQL user limitations

Required values:

MAX_QUESTIONS - no limitations
MAX_UPDATES - no limitations
MAX_QUERIES_PER_HOUR - no limitations
MAX_USER_CONNECTIONS - no limitations

Recommended values:

max_allowed_packet - 8-16 MB recommended
wait_timeout - minimum 7200 (28800 recommended)
Note: a 'Lost connections' error may appear if the values of the options 'max_allowed_packet' and 'wait_timeout' are too low.

Apache configuration

Apache is the recommended web server. The settings described below refer to Apache only.

Distributed configuration file

  • The name of the file must be ".htaccess" (AccessFileName .htaccess).
  • You must have sufficient permissions to change the settings of the web directory via the .htaccess file (AllowOverride = ALL).

PHP running mode

If PHP is installed as CGI, it must be compiled with --enable-force-cgi-redirect (without --enable-discard-path).

Apache modules

Basic modules:

  • mod_dir - is required for correct operation of DirectoryIndex
  • mod_access - is required for correct operation of Deny From All and Allow From All
  • mod_auth - is required for correct operation of HTTP authentication (HTTP authentication is used in Google Checkout module for additional Admin area protection)

Recommended modules

  • mod_userdir - is required for access to the website via a temporary URL (http://IP/~user).
  • mod_rewrite - is required for correct operation of the Clean URLs functionality.
  • mod_expires - is required to set up file caching.
  • mod_gzip / mod_deflate - is required for page compression.

HTTPS settings

  • DocumentRoot directories for HTTP and HTTPS must be the same.
  • PHP on HTTP and HTTPS must be run under the same user account.
  • The php.ini file must be the same for HTTP and HTTPS.

Disk space

A fresh installation of X-Cart 4.3.0 uses at least 30 megabytes of disk space (if installed without add-ons). In addition to that, some disk space will be needed for X-Cart's cache data, image files (if you choose to store them on the file system) and customizations.

MySQL space

The amount of space required for X-Cart database depends on the number of products, customers and orders that will be stored there. Accordingly, database space requirements may vary from as little as 5 megabytes for small shops to over 500 megabytes for large stores.

Advanced requirements and recommended settings

Network settings

  • Outgoing connections must be allowed for ports 80, 443 and 1129. Some payment and shipping systems may require additional ports.
  • The server firewall must allow loopback connections. This is required for HTML catalog feature.
  • External domains must be resolved on the level of PHP as well as on the system level. Such PHP functions as gethostbyaddr and gethostbyname must work without limitations.
  • Domains hosted on a hosting with localhost must be resolved to an external IP address if the server is behind NAT.

Other requirements

  • A valid SSL certificate from the list of SSL certificates accepted by Google Checkout is required for correct operation of Google Checkout module. For more information, see the section "What SSL certificates does Google Checkout accept?" of Google Checkout Merchant Help.
  • Windows or Linux operating system is required for HSBC payment method.
  • The following functionality requires no less than 64 MB of memory: backing up/restoring the database, import and product modification.
Important! These are the basic system requirements. Some specific settings may be needed for different store configurations.

Client-side requirements


The users of X-Cart's back end must have JavaScript enabled in the web browser.

For the users of X-Cart's storefront, enabled JavaScript is recommended: JavaScript is not required for the basic storefrontfunctionality: a user can register, log in, add a product to cart and check out without JavaScript enabled; however, anything above that is not guaranteed to work without enabled JavaScript. For example, although a user will be able to buy a regular product with JavaScript disabled, they will not be able to buy a configurable product or a gift certificate.

If a user enters the store with JavaScript disabled, X-Cart displays a message asking this user to enable JavaScript in the web browser.


Both the users of X-Cart's storefront and back end must set their web browser to accept cookies. If a user enters the store using a browser that does not accept cookies and attempts to perform an operation that requires enabled cookies, X-Cart displays a message asking this user to enable cookies in the web browser.

Screen resolution

Minimum required screen resolution for the storefront is 800x600 (recommended: 1024x768 or higher).

Minimum required screen resolution for the back end is 1024x768.

Browser compatibility

  • X-Cart can be used with most web browsers, including the following:
  • Microsoft Internet Explorer 6, 7, 8
  • Mozilla FireFox for Windows v1.5, v2, v3
  • Mozilla FireFox for MacOS v2, v3
  • Mozilla FireFox for Linux v2, v3
  • Opera for Windows v9.2, v9.5
  • Opera for FreeBSD v9.5
  • Opera for Linux v9.5
  • Opera for MacOS v9.5
  • Safary for Windows v3.1
  • Safary for MacOS v2.0, v3.0, v3.1
  • Mozilla for Linux v1.8
  • Mozilla for FreeBSD v1.8
  • Google Chrome