In PHP, how can multiple values in a string variable be compared with multiple values in a string column in a database query?

When comparing multiple values in a string variable with multiple values in a string column in a database query, you can use the IN clause in your SQL query. This allows you to specify a list of values to search for in the column. In PHP, you can dynamically construct the list of values from your string variable and include it in the query.

// Assuming $stringVariable contains the multiple values to compare
$values = explode(',', $stringVariable);
$placeholders = rtrim(str_repeat('?,', count($values)), ',');
$query = "SELECT * FROM table_name WHERE column_name IN ($placeholders)";

// Prepare and execute the query with the values
$stmt = $pdo->prepare($query);
$stmt->execute($values);
$results = $stmt->fetchAll();