title: php echo form not work
body: <p>In PHP file in MySQL loop output I put this:</p>
  
  <pre><code>echo '&lt;form id="sendxpin'.$id_pro.'" method="post" action="proyect.php" target="proyex'.$id_pro.'"&gt;
  &lt;input type="hidden" name="idxpin'.$id_pro.'" id="idxpin'.$id_pro.'" value="'.$xpin.'" /&gt;
  &lt;input type="hidden" name="idid'.$id_pro.'" id="idid'.$id_pro.'" value="'.$id_pro.'" /&gt;
  &lt;input type="hidden" name="idkey'.$id_pro.'" id="idkey'.$id_pro.'" value="'.$xkey.'" /&gt;
  &lt;/form&gt;';
  </code></pre>
  
  <p>but generated html like this:</p>
  
  <pre><code>&lt;form id="sendxpin61" target="proyex61" action="proyect.php" method="post"&gt;&lt;/form&gt;
  &lt;input id="idxpin61" type="hidden" value="1234" name="idxpin61"&gt;&lt;/input&gt;
  &lt;input id="idid61" type="hidden" value="61" name="idid61"&gt;&lt;/input&gt;
  &lt;input id="idkey61" type="hidden" value="Z732D8JGVB11YUOQYK9F61H8E5JNE38CMB5467LGAO" name="idkey61"&gt;&lt;/input&gt;
  </code></pre>
  
  <p>In HTML generated file input fields are out of form and submit for form work without variables, post vars not work.</p>
  
  <p>Why this string <code>&lt;/form&gt;</code> is printed before input fields?</p>