How can the issue of options being appended to previous selections be resolved in PHP?

To resolve the issue of options being appended to previous selections in PHP, you can simply reset the selected value to the default option each time the form is submitted. This can be done by setting the selected attribute to the default option in the HTML code or by resetting the selected value in the PHP script that handles the form submission. 

<?php
// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Reset the selected value to the default option
    $selectedOption = "default";
} else {
    // Set the selected value based on the form submission
    $selectedOption = $_POST["option"];
}
?>

<form method="post">
    <select name="option">
        <option value="default" <?php if ($selectedOption == "default") echo "selected"; ?>>Select an option</option>
        <option value="option1" <?php if ($selectedOption == "option1") echo "selected"; ?>>Option 1</option>
        <option value="option2" <?php if ($selectedOption == "option2") echo "selected"; ?>>Option 2</option>
    </select>
    <input type="submit" value="Submit">
</form>

Keywords

PHP form select multiple prevent_duplicates

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