Question

<form method="post">
        <label>
            <input type="text" value="" size="18" name="searchtxt" class="box"/>
            <input type="submit" value="Search" class="button" name=""/>
        </label>
    </form>

I pressed submit,but searchtxt is not submitted,why?

Answer 1

Make sure you’re referencing it through the $_POST array:

print $_POST["searchtxt"];

It’s a common mistake to instead try accessing the value as a straight variable: $searchtxt; And on a side note, your HTML needs to be reorganized a bit:

<form method="post">
  <label>Search:</label><input type="text" name="searchtxt" class="box"/>
  <input type="submit" value="Search" class="button" name=""/>
</form>