PHP / XML - jak czytać wielokrotne subkody

Potrzebuję utworzyć tablicę ze wszystkimi wartościami tematu w tym pliku XML. Lista ISIN wydaje się działać poprawnie (pierwsza wartość właściwości), ale wartości obiektu nie działają.

Chciałbym skończyć z tablicą wyglądającą mniej więcej tak:

$Companys = array ( [0]  => array ( "isin" => "DK0010247014","company" => "AAB"),
                    [1]  => array ( "isin" => "DK0015250344","company" => "ALM BRAND"),
                    [2]  => array ( "isin" => "DK0015998017","company" => "BAVARIAN NORDI"),
                    [3]  => array ( "isin" => "DK0010259027","company" => "DFDS"),
                    [4]  => array ( "isin" => "DK0010234467","company" => "FLSMIDTH & CO"),
                );

To jest przykład jednego z plików, które próbuję przeanalizować:

<doc>
    <id>123456</id>
    <version>4.0</version>
    <consnr>7861</consnr>
    <doctype>10</doctype>
    <dest>99</dest>
    <created>2013-05-15 14:18:16</created>
    <source>Direkt-DK</source>
    <language>DA</language>
    <texttype>This is a type</texttype>
    <premium>False</premium>
    <header>This is a header</header>
    <text>
        <para format="Text">This is a paragraph</para>
        <para format="Text">This is a paragraph</para>
        <para format="Text">This is a paragraph</para>
        <para format="Text">This is a paragraph</para>
        <para format="Text"/>
        <para format="Text">This is a paragraph</para>
        <para format="Byline"/>
        <para format="Byline">contents og the by line</para>
        <para format="Byline"/>
        <para format="Byline"/>
    </text>
    <subjects>
        <subject value="AAB" weight="Main">
            <property value="DK0010247014" type2="isin" type1="identificator"/>
            <property value="CSE:AAB" type2="ticker" type1="identificator"/>
            <property type1="sector" type2="GICS" type3="1" value="25"/>
            <property type1="sector" type2="GICS" type3="2" value="2530"/>
            <property type1="sector" type2="GICS" type3="3" value="253010"/>
            <property type1="sector" type2="GICS" type3="4" value="25301030"/>
        </subject>
        <subject value="ALM BRAND" weight="Main">
            <property value="DK0015250344" type2="isin" type1="identificator"/>
            <property value="CSE:ALMB" type2="ticker" type1="identificator"/>
            <property type1="sector" type2="GICS" type3="1" value="40"/>
            <property type1="sector" type2="GICS" type3="2" value="4030"/>
            <property type1="sector" type2="GICS" type3="3" value="403010"/>
            <property type1="sector" type2="GICS" type3="4" value="40301040"/>
        </subject>
        <subject value="BAVARIAN NORDI" weight="Main">
            <property value="DK0015998017" type2="isin" type1="identificator"/>
            <property value="CSE:BAVA" type2="ticker" type1="identificator"/>
            <property type1="sector" type2="GICS" type3="1" value="35"/>
            <property type1="sector" type2="GICS" type3="2" value="3520"/>
            <property type1="sector" type2="GICS" type3="3" value="352010"/>
            <property type1="sector" type2="GICS" type3="4" value="35201010"/>
        </subject>
        <subject value="DFDS" weight="Main">
            <property value="DK0010259027" type2="isin" type1="identificator"/>
            <property value="CSE:DFDS" type2="ticker" type1="identificator"/>
            <property type1="sector" type2="GICS" type3="1" value="20"/>
            <property type1="sector" type2="GICS" type3="2" value="2030"/>
            <property type1="sector" type2="GICS" type3="3" value="203030"/>
            <property type1="sector" type2="GICS" type3="4" value="20303010"/>
        </subject>
        <subject value="FLSMIDTH & CO" weight="Main">
            <property value="DK0010234467" type2="isin" type1="identificator"/>
            <property value="CSE:FLS" type2="ticker" type1="identificator"/>
            <property type1="sector" type2="GICS" type3="1" value="20"/>
            <property type1="sector" type2="GICS" type3="2" value="2010"/>
            <property type1="sector" type2="GICS" type3="3" value="201030"/>
            <property type1="sector" type2="GICS" type3="4" value="20103010"/>
        </subject>
    </subjects>
</doc>

Scenariusz:

<?
    foreach($xmlObj->subjects->subject as $b ){
        $isin = $b->property;
        $company = $b->attributes();
        #$company = $b->attributes()->value;
        If($isin && $isinlist == 'null') $isinlist = $isin['value'];
        ElseIf ($isin && $isinlist) $isinlist .= ','.$isin['value'];
        If($company && $companylist == 'null') $companylist = $company['value'];
        ElseIf ($company && $companylist) $companylist .= ','.$company['value'];
        var_dump($company->value[0]);
    }
?>

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