# Requirements

* ExpressionEngine 6.4 or greater
* MySQL 5.7 - 8.0 or MariaDB 10.2+ (InnoDB engine preferred. Install may fail if database engine is MyISAM)
* PHP 8.2 or greater
* php-xml module installed if importing from an XML file. If you see an error such as "Call to undefined function xml\_parser\_create()", [then this is likely the issue](https://stackoverflow.com/questions/45912836/call-to-undefined-function-xml-parser-create).
* cURL extension installed and enabled
* PCNTL extension installed and enabled

DataGrab will also attempt to set some PHP variables to improve it's performance and hopefully avoid errors. Below is a list of the variables it will set. For this reason, it is best to make sure `ini_set()` is not in PHP's `disabled_functions` directive (some shared hosting providers will disable `ini_set()`)

### **error\_log**

DataGrab will log its import status. This is used for self debugging, and when reporting support issues. [Read more about the logging options](/datagrab/docs/troubleshooting.md).

### **auto\_detect\_line\_endings**

When using the CSV import type, DataGrab will attempt to enable the `auto_detect_line_endings` option.

### **pcre.backtrack\_limit**

When using the Wordpress import type, DataGrab will attempt to set the `pcre.backtrack_limit` to `250000`.

### **memory\_limit**

When the import process runs, DataGrab will attempt to set the PHP `memory_limit` to `1G` for the duration of the import to help ensure the import is successful. 


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