How can PHP developers ensure that checkbox values are properly passed and stored in a database when using multiple checkboxes in a form?

When using multiple checkboxes in a form, PHP developers can ensure that checkbox values are properly passed and stored in a database by assigning unique names to each checkbox input and checking if they are checked before storing the values in the database. 

// Assuming the form has multiple checkboxes with the name attribute as an array
// Example: <input type="checkbox" name="checkboxes[]" value="1">
// Example: <input type="checkbox" name="checkboxes[]" value="2">

// Check if checkboxes are submitted
if(isset($_POST['checkboxes'])) {
    // Loop through each checkbox value
    foreach($_POST['checkboxes'] as $checkbox) {
        // Sanitize the checkbox value before storing in the database
        $checkbox_value = filter_var($checkbox, FILTER_SANITIZE_STRING);

        // Store the checkbox value in the database
        // Example query: INSERT INTO table_name (checkbox_column) VALUES ('$checkbox_value')
    }
}

Keywords

PHP checkboxes form database validation

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