得到“ SQLSTATE [HY093]：无效的参数编号：参数未定义”

Question

I have searched thread after thread with this error and everyone's error conceptually boils down to a parameter missing or misspelled. I have probably spent collectively around 4-5 hours trying to find the solution. I specifically made an account for this problem.

This is the error:

ERROR: SQLSTATE[HY093]: Invalid parameter number: parameter was not defined

Whatever is wrong, my professors are stumped as well. Anyway here are some snippets of my code:

NOTE: I set "location" equal to "todo-description"'s content because I have not formatted my HTML page with a location box yet.

SOLUTION: the hyphen in "due-date" is an illegal character.

    $data = array(
        'todo-name' => array('name' => 'Todo Item Name','value' => '', 'errors' =>array()),
        'todo-list' => array('name' => 'Todo List', 'value' => '', 'errors' => array()),
        'todo-due-date' => array('name' => 'Due Date', 'value' => '','errors' => array()),
        'todo-location' => array('name' => 'Location', 'value' => '','errors' => array()),
        'todo-priority' => array('name' => 'Priority', 'value' => '','errors' => array()),
        'todo-description' => array('name' => 'Description', 'value' => '','errors' => array()) 
        );

    if($total_errors == 0)
{
    $date = DATETIME::createFromFormat('m/d/Y', $data['todo-due-date']['value']);
    $date = $date->format('Y-m-d');
    $data['todo-due-date']['value'] = $date;

    $query = "insert into todo_item(name, due_date, list, priority, location, description)
        values(:name, :due-date, :list, :priority, :location, :description);";

    $statement = $db->prepare($query);
    try
    {
        $statement->execute(array(
                'name' => $data['todo-name']['value'],
                'due-date' => $data['todo-due-date']['value'],
                'list' => $data['todo-list']['value'],
                'priority' => $data['todo-priority']['value'],
                'location' => $data['todo-description']['value'],
                'description' => $data['todo-description']['value']
                ));

        if($statement)                  
        {
            $position = $db->lastInsertId();
            header("Location: item.php?id=$position");
        }
    }
    catch(Exception $ex)
    {
        die("Could not execute query: {$ex->getMessage()}");
    }
}
else
{
    die('error');
}

Answer 1

According to the answer to PDO valid characters for placeholders ( https://stackoverflow.com/a/5810058/689579 )
and
http://lxr.php.net/xref/PHP_5_3/ext/pdo/pdo_sql_parser.re#49

Valid parameter chars

BINDCHR = [:][a-zA-Z0-9_]+;

So your hypenated parameter 'due-date' is invalid

Answer 2

You 've forgotten something. Just have a look:

$statement->execute(array(
    ':name' => $data['todo-name']['value'],
    ':due-date' => $data['todo-due-date']['value'],
    ':list' => $data['todo-list']['value'],
    ':priority' => $data['todo-priority']['value'],
    ':location' => $data['todo-description']['value'],
    ':description' => $data['todo-description']['value']
));

Got it? ;)