xml - PHP SimpleXML startdate in given date range -

i have problems events xml-file startdate between given date range.

my xml file looks this:

    <events>     <event_data>         <id>1</id>         <startdate realdate="2013-08-06">1375740000</startdate>         <enddate realdate="2013-08-13">1376344800</enddate>     </event_data>      <event_data>         <id>2</id>         <startdate realdate="2013-08-10">1376085600</startdate>         <enddate realdate="2013-08-17">1376690400</enddate>     <event_data>      <event_data>         <id>3</id>         <startdate realdate="2013-08-17">1376690400</startdate>         <enddate realdate="2013-08-24">1377295200</enddate>     </event_data>      <event_data>         <id>4</id>         <startdate realdate="2013-08-24">1377295200</startdate>         <enddate realdate="2013-09-07">1378504800</enddate>     <event_data>      <event_data>         <id>5</id>         <startdate realdate="2013-08-25">1377381600</startdate>         <enddate realdate="2013-09-08">1378591200</enddate>     </event_data>      <event_data>         <id>6</id>         <startdate realdate="2013-09-15">1379196000</startdate>         <enddate realdate="2013-09-23">1379887200</enddate>     <event_data>      <event_data>         <id>7</id>         <startdate realdate="2013-10-26">1382738400</startdate>             <enddate realdate="2013-11-02">1383346800</enddate>     </event_data>      <event_data>         <id>8</id>         <startdate realdate="2013-11-10">1384038000</startdate>         <enddate realdate="2013-11-15">1384470000</enddate>     <event_data>      <event_data>         <id>9</id>         <startdate realdate="2014-01-11">1389394800</startdate>         <enddate realdate="2014-01-18">1389999600</enddate>     </event_data>      <event_data>         <id>10</id>         <startdate realdate="2014-01-19">1390086000</startdate>         <enddate realdate="2014-01-24">1390518000</enddate>     <event_data> </events> 

my php code this:

<form action="" method="post">     <div id="slider-range"></div>     <input type="text" name="startdate" style="margin:40px 0 0">     <input type="text" name="enddate" style="margin:40px 0 0">      <input type="submit" name="submitclub" value="submit" /> </form>  <?php  ?>  <div id="eventlist"> <?php       $sxe = simplexml_load_file('events.xml');        if($sxe) {           if(isset($_post['submitclub'])) {              $varstart = $_post['startdate'];             $varend = $_post['enddate'];              if($varstart){                  $start = strtotime($varstart);                 $end = strtotime($varend);                  $xpath = sprintf(                     '//event_data[                     (%1$d >= startdate , %2$d <= enddate)                 or                 (%1$d <= enddate , %2$d >= startdate)                     ]',                     strtotime($varstart),                     strtotime($varend)                 );                  foreach($sxe->xpath($xpath) $event){                     echo $event->id, php_eol . '<br>';                 }                                }                         } else {             echo 'keine events';         }     } else {         echo '<p>die datei konnte nicht geöffnet werden</p>';     }  ?> </div> 

with dates start , ends during given date range want display events start during given date range.

so lets want display events start between august 12, 2013 , august 24, 2013, events should displayed:

3 4 

if date range between september 15, 2013 , november 10, 2013 these events should displayed

6 7 8 

i appreciate :)

edited: works now. change

(%1$d >= startdate , %2$d <= enddate) or (%1$d <= enddate , %2$d >= startdate) 

to

(%1$d <= startdate , %2$d >= startdate) 

i found solution problem above. changed

(%1$d >= startdate , %2$d <= enddate) or (%1$d <= enddate , %2$d >= startdate) 

to

(%1$d <= startdate , %2$d >= startdate)