What are the best practices for passing the selected value from a dropdown menu to PHP for further database queries?

To pass the selected value from a dropdown menu to PHP for further database queries, you can use a form with a dropdown menu and submit the form using either POST or GET method. In the PHP script that processes the form data, you can access the selected value using $_POST or $_GET superglobal depending on the method used, and then use it in your database query. 

<form method="post" action="process_form.php">
  <select name="dropdown">
    <option value="value1">Option 1</option>
    <option value="value2">Option 2</option>
    <option value="value3">Option 3</option>
  </select>
  <input type="submit" value="Submit">
</form>
```

```php
// process_form.php

$selected_value = $_POST['dropdown'];

// Use $selected_value in your database query

Keywords

dropdown menu PHP database queries form submission AJAX

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