What are the steps to validate and insert selected checkbox values into a database table in PHP?

When working with checkboxes in a form, you may need to validate the selected values before inserting them into a database table. To achieve this in PHP, you can use an array to store the selected checkbox values, validate them using a loop, and then insert the values into the database table using prepared statements to prevent SQL injection. 

// Assuming form data is submitted via POST method
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Validate and sanitize the selected checkbox values
    $selectedValues = isset($_POST['checkbox_values']) ? $_POST['checkbox_values'] : [];
    $validatedValues = [];
    
    foreach ($selectedValues as $value) {
        // Perform validation/sanitization here as needed
        $validatedValues[] = $value;
    }
    
    // Insert validated checkbox values into the database table
    $stmt = $pdo->prepare("INSERT INTO table_name (column_name) VALUES (:value)");
    
    foreach ($validatedValues as $value) {
        $stmt->bindParam(':value', $value);
        $stmt->execute();
    }
}

Keywords

PHP validation checkbox database insertion

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