System requirements
From Contao Community Documentation
These are the basic system requirements for a Contao webspace:
| feature | description |
|---|---|
| webserver | Apache or IIS |
| PHP | minimum version 5.2 |
| PHP extensions | GDlib, used for image resizing; SOAP (optionally), needs to allow external transfers so that you can use the extension repository within your Contao-backend; mbstring (optionally), needed for multi-byte character handling; mcrypt (optionally), needed for data encryption |
| MySQL | minimum version 4.1, though I definitely recommend version 5.x; MySQLi is also supported |
| browser (for Contao backend) | a modern internet browser … don't even think about Internet Explorer 6 ;-) |
Recommended PHP configurations
| parameter | description |
|---|---|
| Safe mode | Off |
| Maximum execution time | 30 or greater |
| Memory limit | 16M or greater |
| Register globals | Off |
| File uploads | On |
| Upload maximum filesize | 8M or greater |
| GDlib extension | On |
| SOAP extension | On |
Tip: I recommend using the system check.