What is the best practice for using regular expressions in MySQL queries for pattern matching?

When using regular expressions in MySQL queries for pattern matching, it is best practice to use the REGEXP operator along with the REGEXP binary operator to perform case-sensitive matching. This ensures that the regular expression pattern is applied correctly to the data in the database. Additionally, it is recommended to escape any special characters in the regular expression pattern to prevent syntax errors.

$search_term = "pattern";
$query = "SELECT * FROM table_name WHERE column_name REGEXP BINARY '" . $search_term . "'";
$result = mysqli_query($connection, $query);

if(mysqli_num_rows($result) > 0) {
    while($row = mysqli_fetch_assoc($result)) {
        // Process the results
    }
} else {
    echo "No results found.";
}