HTML格式，接受未经检查的输入

<form method=post action=\"control.php\">
<input name=\"cat[]\" type=\"checkbox\" value=\"blabla\" checked>blabla
<input name=\"cat[]\" type=\"checkbox\" value=\"bleble\" checked>bleble
.
.
.
<input name=\"send\" type=\"submit\" id=\"send\" value=\"send\">
</form>

cat[]

$cat=array(
  \'blabla\' => \'blabla\',
  \'bleble\' => \'bleble\',
  ...
);

<? foreach ($cat as $k=>$v) : ?>
  <input name=\"cat[]\" type=\"checkbox\" value=\"<?=$k?>\" checked /><?=$v?>
<? endforeach; ?>

$unchecked=array_diff(array_keys($cat), $_POST[\'cat\']);