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:
<?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:
<?php
require_once 'ReflectTest.php';
$ref = new ReflectTest("1", "admin", "admin888");//实例化ReflectTest
echo "<h1>ReflectTest init.</h1><br/>UserId:".$ref->getUserId()."<br/>UserName:".$ref->getUserName()."<br/>Password:".$ref->getPassword();
$class = new ReflectionClass('ReflectTest');//反射加载ReflectTest类
$instance = $class->newInstanceArgs(array('123','root','123456'));//ReflectTest初始化
echo "<h1>Field:</h1><br/>";
$field = $class->getProperties();
foreach($field as $f) {
echo $f->getName()."<br/>";//反射输出所有的成员变量
}
echo "<h1>get Fields DocComment:</h1><br/>";
foreach($field as $f) {
$docComment = $f->getDocComment();//反射输出所有成员变量的文档注释
echo $docComment."<br/>";
}
$method = $class->getMethods();//获取ReflectTest所有方法
echo "<h1>get Methods DocComment:</h1><br/>";
foreach($method as $m) {
$docComment = $m->getDocComment();//获取所有方法的文档注释
echo $docComment."<br/>";
}
echo "<h1>get Methods:</h1><br/>";
foreach($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($instance):"")."<br/>";
if("setQq"==$m->getName()){
$m->invoke($instance,'441637262');//调用setQq方法为ReflectTest当中的成员变量qq设值
}
}
echo "<h1>Invoke (set/get)Qq result:</h1><br/>";
$qq=$class->getmethod('getQq');//获取getQq方法
echo "getQQ:".$qq->invoke($instance)."<br/>";//获取成员变量qq的值
echo "jb51.net";
?>
请求http://localhost/php/test/Test.php输出结果：
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.net