Best answer ever ?
Here you go:
<?php
// table with following columns:
// id(Auto-Increment), naam, straatnummer, postcodestad
if(!empty($_POST))
{
$db=mysqli_connect("localhost","root","sql_password","db_name");
$keys = implode(',',array_keys($_POST));
$values = implode(', ', array_map(
function ($v) { return sprintf("'%s'", $v); }, $_POST
));
$query = "INSERT INTO personen(" . $keys . ") VALUES(" . $values . ")";
mysqli_query($db,$query);
mysqli_close($db);
echo($query);
}
else
{
?>
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<form action="<?php echo($_SERVER['PHP_SELF']); ?>" method="POST">
<table>
<tr>
<td>Naam</td>
<td><input type="text" name="naam"></td>
</tr>
<tr>
<td>Straat & nummer</td>
<td><input type="text" name="straatnummer"></td>
</tr>
<tr>
<td>Postcode & stad</td>
<td><input type="text" name="postcodestad"></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="Opslaan"></td>
</tr>
</table>
</form>
</body>
</html>
<?php
}
?>