如果不是，虽然声明是真的。 （PHP）

Question

When I Do an IF Statement using PHP while checking values from an XML File, It thinks that the statement is not true although it 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 that the sample of my code:

$xml = simplexml_load_file($filedir) or die("Error: Could not open file<br>");
    if(isset($xml->Mission)){
        foreach($xml->Events->Event as $value){
            $num++;
            if($xml->Mission->MainAircraftID === $value->PrimaryObject['ID']{
                echo $value->Action;
            }   
        }
    }

P.S: If i try to echo $value->PrimaryObject['ID'];
and echo $xml->Mission->MainAircraftID; (Inside the foreach loop)
it prints 59 and 59...

Answer 1

Eventually i took Mark Baker's advise and made the if statement like this: if((string)$value->PrimaryObject['ID'] === (string) $xml->Mission->MainAircraftID) Thank you guys.