What potential pitfalls can arise when handling radio buttons and checkboxes in PHP form submissions?

When handling radio buttons and checkboxes in PHP form submissions, a common pitfall is not properly checking if the input was selected or not. This can lead to errors in processing the form data. To solve this issue, always check if the radio button or checkbox was selected before using its value in your PHP code. 

// Example of handling radio buttons and checkboxes in PHP form submissions

// Check if a radio button was selected
$selectedOption = isset($_POST['radio_option']) ? $_POST['radio_option'] : '';

// Check if a checkbox was checked
$isChecked = isset($_POST['checkbox_option']) ? true : false;

Keywords

radio buttons checkboxes form submissions PHP validation input handling

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