How can a selected value from an options field be passed to a MySQL query in PHP?

To pass a selected value from an options field to a MySQL query in PHP, you can use the $_POST superglobal to retrieve the selected value from the form submission. Then, you can use this value in your MySQL query by incorporating it into the query string. Make sure to properly sanitize the input to prevent SQL injection attacks.

// Retrieve the selected value from the form submission
$selectedValue = $_POST['options_field'];

// Sanitize the input
$selectedValue = mysqli_real_escape_string($connection, $selectedValue);

// Use the selected value in your MySQL query
$query = "SELECT * FROM table_name WHERE column_name = '$selectedValue'";
$result = mysqli_query($connection, $query);

// Process the query result as needed