search form

My search form:

...........
'<div class="awqsf_box"><p class="awqsf-button"><input type="submit" id="awqsf_submit" value="'.$options[0]['button'].'" alt="[Submit]" name="wqsfsubmit" title="Search" /></p></div>';
echo '<input type="hidden" name="lang" value=" <?php echo qtrans_getLanguage(); ?> ">'; 

echo '</form>';

the search result is like this: https://itransl.com/?s=9eab94f60d&formid=3321&skeyword=+First+Avenger+&wqsfsubmit=Search&lang=+echo+qtrans_getLanguage%28%29%3B+

<?php echo qtrans_getLanguage(); ?> doesn’t work. Why?

Please help.