What are the potential issues with using different data types (int vs. string) for the same data (e.g., country ID) in PHP and how can they be resolved?

Using different data types for the same data can lead to type mismatches and errors when performing operations or comparisons. To resolve this issue, it is important to ensure consistency in data types throughout the codebase. One way to do this is by explicitly converting data to the desired type before using it.

// Convert country ID to integer
$countryId = (int) $countryId;