updating xml file using php -


hey there have xml file has need add event same location name 

  <timetable>   <location name="a" >          <event >                   <title>event title </title>                   <subtitle>amman -text </subtitle>                   <description>amman -text </description>          </event>      </location>     </timetable>

so can 

<timetable>   <location name="a" >          <event >                   <title>event title </title>                   <subtitle>amman -text </subtitle>                   <description>amman -text </description>          </event>          <event >                   <title>event title </title>                   <subtitle>amman -text </subtitle>                   <description>amman -text </description>          </event>      </location>     </timetable>

i got stuck in php code want cheack if event created or not if created modify xml name of event , add new 1

this full php inserting code `

           if(isset($_get['coname'])){            $coid = $_get['id'];            $cname=$_get['coname'];            $title = $_post ['title'];           $sub = $_post ['sub'];           $description = $_post ['description'];           $location = $_post ['location'];           $event = $_post ['event'] ;            $str =$_post ['str'] ;           $end =$_post ['end'] ;           $topic = $_post ['topic'] ;             $sql="insert timeline (title,sub,description,location,event,str,end,topic,coid)           values           ('$title','$sub','$location','$location','$event','$str','$end','$topic','$coid')";           if (!mysqli_query($con,$sql))             {             die('error: ' . mysqli_error($con));             }           echo "1 record added";            $q = mysqli_query($con,"select * timeline coid = $coid") or  die(mysqli_error());            $xml = '<timetable start="'.$st.'" end="'.$en.'" interval="'.$in.'"                                title="'.$da.'">';           while($r = mysqli_fetch_array($q)){               $loc=$r['topic'];               $evns=$r['str'];               $evne= $r['end'];                 $xml .= '<location name="'.$loc.'" subtext=" ">';             $xml .= '<event start="'.$evns.'" end="'.$evne.'">';             $xml .= "<title>".$r['title']."</title>";             $xml .= "<subtitle>".$r['location']."</subtitle>";               $xml .= "<description>".$r['description']."</description>";                  $xml .= "</event>";               $xml .= "</location>";                     }                   $xml .= "</timetable>";                $sxe = new simplexmlelement($xml);               $sxe->asxml('xml/'.$cname.'.xml'); `

amer, rather creating xml strings, i'd use simplexml methods:

inserting new <event> in existing xml:

$xml = simplexml_load_string($x); // assume xml in $x $loc = $xml->xpath("location[@name = 'a']")[0]; // select <location> name =  $event = $loc->addchild("event"); $event->addattribute("start", "2013-05-20 10:00:00"); $event->addattribute("end", "2013-05-20 14:30:00"); $event->addchild("title", "some title"); $event->addchild("subtitle", "some subtitle"); $event->addchild("description", "some description");

see working: http://codepad.viper-7.com/12xtvd


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