What are common issues beginners face when setting up PHP with XAMPP?

One common issue beginners face when setting up PHP with XAMPP is the "php_curl" extension not being enabled by default. To solve this, you can enable the "php_curl" extension in the php.ini file by removing the semicolon before the line "extension=php_curl.dll".

;extension=php_curl.dll
```

Another common issue is the "php_mbstring" extension not being enabled. To solve this, you can enable the "php_mbstring" extension in the php.ini file by removing the semicolon before the line "extension=php_mbstring.dll".

```php
;extension=php_mbstring.dll