IF Not going in although statement true. (PHP) -

when if statement using php while checking values xml file, thinks statement not true although is..

<?xml version="1.0" encoding="utf-8" standalone="yes"?> <tacviewdebriefing version="1.2.6">     <mission>         <title>tape0003</title>         <missiontime>2015-06-03t00:00:00z</missiontime>         <duration>32890.02</duration>         <mainaircraftid>59</mainaircraftid>     </mission>     <events>         <event>             <time>32224.76</time>             <primaryobject id="59">                 <type>aircraft</type>                 <name>f-16c fighting falcon</name>                 <pilot>viper</pilot>                 <coalition>rok/shark</coalition>             </primaryobject>             <action>hastakeoff</action>             <airport id="icao:llhs">                 <name>hatzor afb</name>             </airport>         </event>     </events> </tacviewdebriefing> 

and sample of code:

$xml = simplexml_load_file($filedir) or die("error: not open file<br>");     if(isset($xml->mission)){         foreach($xml->events->event $value){             $num++;             if($xml->mission->mainaircraftid === $value->primaryobject['id']{                 echo $value->action;             }            }     } 

p.s: if try echo $value->primaryobject['id'];
, echo $xml->mission->mainaircraftid; (inside foreach loop)
prints 59 , 59...

eventually took mark baker's advise , made if statement this: if((string)$value->primaryobject['id'] === (string) $xml->mission->mainaircraftid) thank guys.