fout in script

<?php
include("style.css");
include("config.php");

$day = date("j");

$month = date("m");

$year = date("Y");

$space = "&nbsp;";



$month = str_replace("01", "Januari", $month);

$month = str_replace("02", "Februari", $month);

$month = str_replace("03", "Maart", $month);

$month = str_replace("04", "April", $month);

$month = str_replace("05", "Mei", $month);

$month = str_replace("06", "Juni", $month);

$month = str_replace("07", "Juli", $month);

$month = str_replace("08", "Augustus", $month);

$month = str_replace("09", "September", $month);

$month = str_replace("10", "Oktober", $month);

$month = str_replace("11", "November", $month);

$month = str_replace("12", "December", $month);



$time = date("H:i:s");

$datum = $day.$space.$month.$space.$year;


if ($_POST) {

if ($_POST['titel'] == '')
{
echo "Error! Titel niet ingevuld.";
}
elseif ($_POST['auteur'] == '')
{
echo "Error! Naam niet ingevuld.";
}
elseif ($_POST['email'] == '')
{
echo "Error! Email niet ingevuld.";
}
elseif ($_POST['uitleg'] == '')
{
echo "Error! Uitleg niet ingevuld.";
}
elseif ($_POST['code'] == '')
{
echo "Error! Code niet ingevuld.";
}

else {

$sql = "INSERT INTO script (titel, cat, auteur, email, datum, ip, uitleg, code)
VALUES ('".$titel."', '".$cat."', '".$auteur."', '".$email."', '".$datum."', '".$ip."', '".addslashes($_POST['uitleg'])."', '".$code."')";
mysql_query($sql) or die ("fout in query");


echo "Script is succesvol toegevoegd.<p>";
echo "<a href=\"scripts.php\">Ga naar de index</a>";

}
}
else {
?>

<form action="voegtoe.php" method="post">
<b>Titel:</b><br>
<input type="text" name="titel">
<br>
<b>Categorie:</b><br>
<select name="cat">
<option>Kies je Categorie</option>
<option>--------------------</option>
<option value="HTML">HTML</option>
<option value="PHP">PHP</option>
<option value="PHP &amp; MySQL">PHP &amp; MySQL</option>
<option value="MySQL">MySQL</option>
<option value="Javascript">Javascript</option>
<option value="CSS">CSS</option>
<option value="Overige">Overige</option>
</select>
<br>
<b>Auteur:</b><br>
<input type="text" name="auteur">
<br>
<b>E-mail:</b><br>
<input type="text" name="email">
<br>
<br>
<b>Uitleg:</b>
<p>
<textarea name="uitleg" cols="90" rows="10" id="uitleg"></textarea>
<br>
<br><b>Code:</b><p>
<textarea name="code" cols="90" rows="10" id="code"></textarea>
<p><input type="submit" name="Submit" value="Toevoegen">
</form>

<?php }
?>


-------------------------

kijk ik heb dus dit al ik het wil toevoeg in het scriptsysteem krijg ik sql fout dat de helft niet is toegevoeg hie ris dus de fout


$sql = "INSERT INTO script (titel, cat, auteur, email, datum, ip, uitleg, code)
VALUES ('".$titel."', '".$cat."', '".$auteur."', '".$email."', '".$datum."', '".$ip."', '".addslashes($_POST['uitleg'])."', '".$code."')";
mysql_query($sql) or die ("fout in query");