What are the potential issues with using reserved SQL words as column names in PHP?

Using reserved SQL words as column names in PHP can lead to syntax errors or unexpected behavior when executing SQL queries. To avoid this issue, you should always use backticks (`) to escape column names that are reserved words in SQL.

// Example of using backticks to escape reserved SQL words as column names
$column_name = 'select'; // reserved SQL word
$query = "SELECT `{$column_name}` FROM table_name";