Антифлуд

session_start();
if ( !$_SESSION['key'] )
{
$alphabet = 'abcdefghiklmnopqastuvwxyz';
for ( $i = 0; $i < 10; $i++ )
{
if ( rand( 0, 1 ) == 0 )
{
$_SESSION['key'] .= rand( 1, 9 );
}
else
{
if ( rand( 0, 1 ) == 0 )
{
$_SESSION['key'] .= strtolower( $alphabet[rand
( 0, 24; )] );
}
else
{
$_SESSION['key'] .= strtoupper( $alphabet[rand
( 0, 24; )] );
}
}
}
}
if ( $_POST['text'] && $_POST['key'] )
{
if ( !$_POST['key'] OR $_POST['key'] !=
$_SESSION['key'] ) $errors[] = 'Ошибка
сессии!';
if ( !$_POST['text'] ) $errors[] = 'Ошибка,
введите текст сообщения!';
if ( $errors )
{
foreach ( $errors as $error )
{
echo $error . '<br/>';
}
}
else
{
}
}
else
{
echo '<form action='?' . session_name() .
'=' . session_id() . '' method='post'>
Сообщение:
<br/>
<input type='text' name='text'/>
<br/>
<input type='hidden' name='key' value='' .
$_SESSION['key'] . ''/>
<br/>
<input type='submit' value='Отправить'/>
</form>';
}