致命错误:无法重新声明类"；活动“；在PHP中

//我真的没有这样的类，我到处都查了。。。即使我给它取不同的名字。。我得到相同的错误

//这是我的Php文件，是条令的实体

使用条令''ORM''映射AS ORM；

/***活动说明**@作者pawanadhikari*/

/***@实体*@表格（name="pulse_activity"）*/

类活动｛

/**
 * @var integer $id 
 * @Id  
 * @Column(type="integer")
 * @GeneratedValue(strategy="AUTO")
 */
private $id;
/**
 * @var integer $patientId 
 * @Id  
 * @Column(type="integer")
 */
private $patientId;
/**
 * @var integer $steps
 * @Column(type="integer")
 */
private $steps;
/**
 * @var double $calories
 * @Column(type="double")
 */
private $calories;
/**
 * @var double $distance
 * @Column(type="double")
 */
private $distance;
/**
 * @var integer $elevation
 * @Column(type="integer")
 */
private $elevation;
/**
 * @var integer $secondsActivitySoft
 * @Column(type="integer")
 */
private $secondsActivitySoft;
/**
 * @var integer $secondsActivityModerate
 * @Column(type="integer")
 */
private $secondsActivityModerate;
/**
 * @var integer $secondsActivityIntense
 * @Column(type="integer")
 */
private $secondsActivityIntense;
/**
 * @var string $date
 * @Column(type="string") 
 */
private $date;
/**
 * @var string $timeStamp
 * @Column(type="string") 
 */
private $timeStamp;
/**
 * @ManyToOne(targetEntity = "Person", inversedBy = "personActivities" )
 * * @JoinColumn(name="patientId", referencedColumnName="id")
 * 
 */
protected $patientActivity;
public function getId() {
    return $this->id;
}
public function getPatientId() {
    return $this->patientId;
}
public function getSteps() {
    return $this->steps;
}
public function getCalories() {
    return $this->calories;
}
public function getDistance() {
    return $this->distance;
}