PHP中的reflection反射机制测试例子

java类反射应用得非常广泛几乎是所有框架的最核心部分，PHP程序员似乎从不关心反射。尝试着用java的思想去理解PHP的反射，跟java基本上基本一致。参考了PHP手册：http://www.PHP.net/manual/zh/book.reflection.PHP。

ReflectTest.PHP:

rush:PHP;"> class ReflectTest {

/**

• 用户ID
  */
  private $userId;

/**

• 用户名
  */
  private $userName;

/**

• 用户密码
  */
  private $password;

/**

• 用户邮箱
  */
  private $email;

/**

• 用户QQ号码
  */
  private $qq;

/**

• 登陆次数
  */
  private $loginTimes;

public function ReflectTest(){

}

public function __construct($userId,$userName,$password){
$this->userId = $userId;
$this->userName = $userName;
$this->password = $password;
}

/**

• @return the $userId
  */
  public function getUserId() {
  return $this->userId;
  }

/**

• @return the $userName
  */
  public function getUserName() {
  return $this->userName;
  }

/**

• @return the $password
  */
  public function getpassword() {
  return $this->password;
  }

/**

• @return the $email
  */
  public function getEmail() {
  return $this->email;
  }

/**

• @return the $qq
  */
  public function getQq() {
  return $this->qq;
  }

/**

• @return the $loginTimes
  */
  public function getLoginTimes() {
  return $this->loginTimes;
  }

/**

• @param field_type $userId
  */
  public function setUserId($userId) {
  $this->userId = $userId;
  }

/**

• @param field_type $userName
  */
  public function setUserName($userName) {
  $this->userName = $userName;
  }

/**

• @param field_type $password
  */
  public function setPassword($password) {
  $this->password = $password;
  }

/**

• @param field_type $email
  */
  public function setEmail($email) {
  $this->email = $email;
  }

/**

• @param field_type $qq
  */
  public function setQq($qq) {
  $this->qq = $qq;
  }

/**

• @param field_type $loginTimes
  */
  public function setLoginTimes($loginTimes) {
  $this->loginTimes = $loginTimes;
  }
  }
  ?>

Test.PHP:

rush:PHP;"> PHP require_once 'ReflectTest.PHP'; $ref = new ReflectTest("1","admin","admin888");//实例化ReflectTest echo "

ReflectTest init.

UserId:".$ref->getUserId()."
UserName:".$ref->getUserName()."
Password:".$ref->getpassword(); $class = new ReflectionClass('ReflectTest');//反射加载ReflectTest类 $instance = $class->newInstanceArgs(array('123','root','123456'));//ReflectTest初始化

echo "

Field:

";
$field = $class->getProperties();
foreach($field as $f) {
echo $f->getName()."
";//反射输出所有的成员变量
}

echo "

get Fields DocComment:

";
foreach($field as $f) {
$docComment = $f->getDocComment();//反射输出所有成员变量的文档注释
echo $docComment."
";
}

$method = $class->getmethods();//获取ReflectTest所有方法
echo "

get Methods DocComment:

";
foreach($method as $m) {
$docComment = $m->getDocComment();//获取所有方法的文档注释
echo $docComment."
";

}

echo "

get Methods:

";
foreach($method as $m) {
$k = "get";//只调ReflectTest中的所有的get方法
echo $m->getName()."=".($k === "" || strpos ( $m->getName (),$k ) === 0?$m->invoke($instance):"")."
";
if("setQq"==$m->getName()){
$m->invoke($instance,'441637262');//调用setQq方法为ReflectTest当中的成员变量qq设值
}
}

echo "

Invoke (set/get)Qq result:

";
$qq=$class->getmethod('getQq');//获取getQq方法
echo "getQQ:".$qq->invoke($instance)."
";//获取成员变量qq的值
echo "jb51.cc";
?>

请求http://localhost/PHP/test/Test.PHP输出结果：

rush:PHP;"> ReflectTest init.

UserId:1
UserName:admin
Password:admin888
Field:

userId
userName
password
email
qq
loginTimes
get Fields DocComment:

/ 用户ID /
/ 用户名 /
/ 用户密码 /
/ 用户邮箱 /
/ 用户QQ号码 /
/ 登陆次数 /
get Methods DocComment:

/ @return the $userId */
/* @return the $userName /
/ @return the $password */
/ @return the $email */
/* @return the $qq /
/ @return the $loginTimes */
/ @param field_type $userId */
/* @param field_type $userName /
/ @param field_type $password */
/ @param field_type $email */
/* @param field_type $qq /
/ @param field_type $loginTimes */
get Methods:

ReflectTest=
__construct=
getUserId=123
getUserName=root
getpassword=123456
getEmail=
getQq=
getLoginTimes=
setUserId=
setUserName=
setPassword=
setEmail=
setQq=
setLoginTimes=
Invoke (set/get)Qq result:

getQQ:441637262
jb51.cc