How can PHP be used to dynamically check and display selected radio buttons in a form?

To dynamically check and display selected radio buttons in a form using PHP, you can use conditional statements to check if a specific value is selected and then add the "checked" attribute to the corresponding radio button. This can be done by comparing the selected value with the value of each radio button in the form. 

<form method="post">
    <input type="radio" name="color" value="red" <?php if(isset($_POST['color']) && $_POST['color'] == 'red') echo 'checked'; ?>> Red
    <input type="radio" name="color" value="blue" <?php if(isset($_POST['color']) && $_POST['color'] == 'blue') echo 'checked'; ?>> Blue
    <input type="radio" name="color" value="green" <?php if(isset($_POST['color']) && $_POST['color'] == 'green') echo 'checked'; ?>> Green
    <input type="submit" value="Submit">
</form>

Keywords

PHP radio buttons form dynamic display

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