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我正在使用与 swagger 集成的流明来编写 Rest api。我遇到的问题是，即使数组中的键存在，php的isset()方法也返回 false，提到的是我的代码。

$this->setDataCenterHost(isset($aData[self::TBL_NAME.self::COL_HOST]) ? $aData[self::TBL_NAME.self::COL_HOST] : $aData[self::COL_HOST]);

这是有问题的陈述

isset($aData[self::TBL_NAME.self::COL_HOST])

当我像这样回应它时

echo $aData[self::TBL_NAME.self::COL_HOST]

它返回datacenter_host_name

在setDataCenterHost函数中使用与 isset 相同的语句会返回 false。

非常感谢任何帮助。

提到的是全班

 class DTDataCenter
{
    const DATACENTER_ID     = 'id';
    const DATACENTER_NAME   = 'name';
    const DATACENTER_IP     = 'ping_ip_address';
    const DATACENTER_HOST   = 'host_name';
    const DATACENTER_ISO    = 'iso2';
    const DATACENTER_LATT   = 'laitude';
    const DATACENTER_LONG   = 'longitude';


    const COL_ID   = 'id';
    const COL_NAME = 'dc_name';
    const COL_IP   = 'ping_ip_address';
    const COL_HOST = 'host_name';


    const TBL_NAME = 'datacenter_';

    protected $_oId;
    protected $_oName;
    protected $_oHost;
    protected $_oIp;


    /**
     * DTProtocol constructor.
     * @param $_oId
     */
    public function __construct($aData)
    {
        $this->setBaiscInfo($aData);
    }

    /**
     * @return mixed
     */
    function jsonSerialize()
    {
        return $this->getJson();
    }

    /**
     * @return mixed
     */
    public function getJson()
    {
        return array(
            self::DATACENTER_ID     =>$this->getDataCenterId(),
            self::DATACENTER_NAME   =>$this->getDataCenterName(),
            self::DATACENTER_IP     =>$this->getDataCenterIp(),
            self::DATACENTER_HOST   =>$this->getDataCenterHost()
        );
    }

    public function setBaiscInfo($aData)
    {
        //Helper::dumpAndDie($aData);
        $this->setDataCenterId(isset($aData[self::TBL_NAME.self::COL_ID]) ? $aData[self::TBL_NAME.self::COL_ID] :$aData[self::COL_ID] );
        $this->setDataCenterName(isset($aData[self::TBL_NAME.self::COL_NAME]) ? $aData[self::TBL_NAME.self::COL_NAME] : $aData[self::COL_NAME]);
        $this->setDataCenterIp(isset($aData[self::TBL_NAME.self::COL_IP]) ? $aData[self::TBL_NAME.self::COL_IP] : $aData[self::COL_IP]);
        $this->setDataCenterHost(isset($aData[self::TBL_NAME.self::COL_HOST]) ? $aData[self::TBL_NAME.self::COL_HOST] : $aData[self::COL_HOST]);

        // Helper::dumpAndDie($aData);
    }

    public function setDataCenterId($iId)
    {
        $this->_oId = new DTInteger($iId);
    }

    public function setDataCenterName($sName)
    {
        $this->_oName = new DTString($sName);
    }

    public function setDataCenterIp($sIp)
    {
        $this->_oIp = new DTString($sIp);
    }
    public function setDataCenterHost($sHost)
    {
        $this->_oHost = new DTString($sHost);
    }

    public function getDataCenterId()
    {
        return $this->_oId;
    }

    public function getDataCenterName()
    {
        return $this->_oName;
    }

    public function getDataCenterIp()
    {
        return $this->_oIp;
    }

    public function getDataCenterHost()
    {
        return $this->_oHost;
    }



}
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