<form method="POST" action="checkbox.php">
İsim : <input type="text" name="txtisim"><input type="checkbox" name="isimal" value="ok"><br>
Açıklama : <input type="text" name="txtacik"><input type="checkbox" name="acikal" value="ok"><br>
<input value="OK" type="submit">
</form>
<?php
	if ($_POST["isimal"]=="ok") { $visim = $_POST["txtisim"]; }
	if ($_POST["acikal"]=="ok") { $vacik = $_POST["txtacik"]; }
	$sqlim = "INSERT INTO `videos` ( `id` , `isim` , `aciklama`) VALUES (NULL , '$visim', '$vacik')";
	echo "<font color='green'>$sqlim</font>";
?>