What are some potential pitfalls when using $_POST to retrieve values from radio buttons in PHP?

One potential pitfall when using $_POST to retrieve values from radio buttons in PHP is that if a radio button is not selected, its value will not be included in the $_POST array. To solve this issue, you can use the isset() function to check if the value is set before trying to access it. 

if(isset($_POST['radio_button'])){
    $selected_value = $_POST['radio_button'];
    // Use the selected value here
} else {
    // Handle case where radio button is not selected
}

Keywords

$_POST radio buttons values PHP pitfalls

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