What potential issues can arise when using PHP scripts on different hosting platforms, like HostEurope?

One potential issue that can arise when using PHP scripts on different hosting platforms like HostEurope is compatibility issues with PHP version. To solve this, you can specify the PHP version in your script using a shebang line at the beginning of your PHP file. 

```php
#!/usr/bin/php5
```

This will ensure that your script runs with the specified PHP version regardless of the hosting platform.

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