Issuer.php

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<?php

namespace SAML2\XML\saml;

use SAML2\Constants;
use SAML2\DOMDocumentFactory;

class Issuer extends NameIDType
{

    public $Format = Constants::NAMEID_ENTITY;

    protected $nodeName = 'saml:Issuer';

    /*
     *
     * if $this->SAML2IssuerShowAll is set false   
     * From saml-core-2.0-os 8.3.6, when the entity Format is used: "The NameQualifier, SPNameQualifier, and 
     * SPProvidedID attributes MUST be omitted."
     *
     * if $this->SAML2IssuerShowAll is set true
     * when the entity Format is used: "The NameQualifier, SPNameQualifier, and SPProvidedID attributes are not omitted"
     * @see saml-core-2.0-os 8.3.6
     *       
     * @var boolean
     */
    public $Saml2IssuerShowAll = false; //setting true break saml-core-2.0-os 8.3.6
    


    public function toXML(\DOMElement $parent = null)
    {

        if ((($this->Saml2IssuerShowAll) && ($this->Format === Constants::NAMEID_ENTITY)) || ($this->Format !== Constants::NAMEID_ENTITY)) {
            return parent::toXML($parent);
        }

        /*
         *  if $this->SAML2IssuerShowAll is set false   
         * From saml-core-2.0-os 8.3.6, when the entity Format is used: "The NameQualifier, SPNameQualifier, and
         * SPProvidedID attributes MUST be omitted."
         * if $this->SAML2IssuerShowAll is set true when the entity Format is used: "The NameQualifier, SPNameQualifier, and 
         * SPProvidedID attributes are not omitted."
         */

        if ($parent === null) {
            $parent = DOMDocumentFactory::create();
            $doc = $parent;
        } else {
            $doc = $parent->ownerDocument;
        }
        $element = $doc->createElementNS(Constants::NS_SAML, 'saml:Issuer');
        $parent->appendChild($element);

        $value = $element->ownerDocument->createTextNode($this->value);
        $element->appendChild($value);

        return $element;
    }
}