反射api
fullshop.php
<?php
class shopproduct {
private $title;
private $producermainname;
private $producerfirstname;
protected $price;
private $discount = 0;
public function construct( $title, $firstname,
$mainname, $price ) {
$this->title = $title;
$this->producerfirstname = $firstname;
$this->producermainname = $mainname;
$this->price = $price;
}
public function getproducerfirstname() {
return $this->producerfirstname;
}
public function getproducermainname() {
return $this->producermainname;
}
public function setdiscount( $num ) {
$this->discount=$num;
}
public function getdiscount() {
return $this->discount;
}
public function gettitle() {
return $this->title;
}
public function getprice() {
return ($this->price - $this->discount);
}
public function getproducer() {
return "{$this->producerfirstname}".
" {$this->producermainname}";
}
public function getsummaryline() {
$base = "{$this->title} ( {$this->producermainname}, ";
$base .= "{$this->producerfirstname} )";
return $base;
}
}
class cdproduct extends shopproduct {
private $playlength = 0;
public function construct( $title, $firstname,
$mainname, $price, $playlength=78 ) {
parent::construct( $title, $firstname,
$mainname, $price );
$this->playlength = $playlength;
}
public function getplaylength() {
return $this->playlength;
}
public function getsummaryline() {
$base = parent::getsummaryline();
$base .= ": playing time - {$this->playlength}";
return $base;
}
}
class bookproduct extends shopproduct {
private $numpages = 0;
public function construct( $title, $firstname,
$mainname, $price, $numpages ) {
parent::construct( $title, $firstname,
$mainname, $price );
$this->numpages = $numpages;
}
public function getnumberofpages() {
return $this->numpages;
}
public function getsummaryline() {
$base = parent::getsummaryline();
$base .= ": page count - {$this->numpages}";
return $base;
}
public function getprice() {
return $this->price;
}
}
/*
$product1 = new cdproduct("cd1", "bob", "bobbleson", 4, 50 );
print $product1->getsummaryline()."\n";
$product2 = new bookproduct("book1", "harry", "harrelson", 4, 30 );
print $product2->getsummaryline()."\n";
*/
?>
<?php
require_once "fullshop.php";
$prod_class = new reflectionclass( 'cdproduct' );
reflection::export( $prod_class );
?>
output:
class [ <user> class cdproduct extends shopproduct ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 53-73
- constants [0] {
}
- static properties [0] {
}
- static methods [0] {
}
- properties [2] {
property [ <default> private $playlength ]
property [ <default> protected $price ]
}
- methods [10] {
method [ <user, overwrites shopproduct, ctor> public method construct ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 56 - 61
- parameters [5] {
parameter #0 [ <required> $title ]
parameter #1 [ <required> $firstname ]
parameter #2 [ <required> $mainname ]
parameter #3 [ <required> $price ]
parameter #4 [ <optional> $playlength = 78 ]
}
}
method [ <user> public method getplaylength ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 63 - 65
}
method [ <user, overwrites shopproduct, prototype shopproduct> public method getsummaryline ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 67 - 71
}
method [ <user, inherits shopproduct> public method getproducerfirstname ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 17 - 19
}
method [ <user, inherits shopproduct> public method getproducermainname ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 21 - 23
}
method [ <user, inherits shopproduct> public method setdiscount ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 25 - 27
- parameters [1] {
parameter #0 [ <required> $num ]
}
}
method [ <user, inherits shopproduct> public method getdiscount ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 29 - 31
}
method [ <user, inherits shopproduct> public method gettitle ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 33 - 35
}
method [ <user, inherits shopproduct> public method getprice ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 37 - 39
}
method [ <user, inherits shopproduct> public method getproducer ] {
@@ d:\xampp\htdocs\popp-code\5\fullshop.php 41 - 44
}
}
}
点评：把类看的透彻的一塌糊涂，比var_dump强多了。哪些属性，继承了什么类。类中的方法哪些是自己的，哪些是重写的，哪些是继承的，一目了然。
查看类数据
<?php
require_once("fullshop.php");
function classdata( reflectionclass $class ) {
$details = "";
$name = $class->getname();
if ( $class->isuserdefined() ) {
$details .= "$name is user defined\n";
}
if ( $class->isinternal() ) {
$details .= "$name is built-in\n";
}
if ( $class->isinterface() ) {
$details .= "$name is interface\n";
}
if ( $class->isabstract() ) {
$details .= "$name is an abstract class\n";
}
if ( $class->isfinal() ) {
$details .= "$name is a final class\n";
}
if ( $class->isinstantiable() ) {
$details .= "$name can be instantiated\n";
} else {
$details .= "$name can not be instantiated\n";
}
return $details;
}
$prod_class = new reflectionclass( 'cdproduct' );
print classdata( $prod_class );
?>
output:
cdproduct is user defined
cdproduct can be instantiated
查看方法数据
<?php
require_once "fullshop.php";
$prod_class = new reflectionclass( 'cdproduct' );
$methods = $prod_class->getmethods();
foreach ( $methods as $method ) {
print methoddata( $method );
print "\n----\n";
}
function methoddata( reflectionmethod $method ) {
$details = "";
$name = $method->getname();
if ( $method->isuserdefined() ) {
$details .= "$name is user defined\n";
}
if ( $method->isinternal() ) {
$details .= "$name is built-in\n";
}
if ( $method->isabstract() ) {
$details .= "$name is abstract\n";
}
if ( $method->ispublic() ) {
$details .= "$name is public\n";
}
if ( $method->isprotected() ) {
$details .= "$name is protected\n";
}
if ( $method->isprivate() ) {
$details .= "$name is private\n";
}
if ( $method->isstatic() ) {
$details .= "$name is static\n";
}
if ( $method->isfinal() ) {
$details .= "$name is final\n";
}
if ( $method->isconstructor() ) {
$details .= "$name is the constructor\n";
}
if ( $method->returnsreference() ) {
$details .= "$name returns a reference (as opposed to a value)\n";
}
return $details;
}
?>
output:
construct is user defined
construct is public
construct is the constructor
----
getplaylength is user defined
getplaylength is public
----
getsummaryline is user defined
getsummaryline is public
----
getproducerfirstname is user defined
getproducerfirstname is public
----
getproducermainname is user defined
getproducermainname is public
----
setdiscount is user defined
setdiscount is public
----
getdiscount is user defined
getdiscount is public
----
gettitle is user defined
gettitle is public
----
getprice is user defined
getprice is public
----
getproducer is user defined
getproducer is public
获取构造函数参数情况
<?php
require_once "fullshop.php";
$prod_class = new reflectionclass( 'cdproduct' );
$method = $prod_class->getmethod( "construct" );
$params = $method->getparameters();
foreach ( $params as $param ) {
print argdata( $param )."\n";
}
function argdata( reflectionparameter $arg ) {
$details = "";
$declaringclass = $arg->getdeclaringclass();
$name = $arg->getname();
$class = $arg->getclass();
$position = $arg->getposition();
$details .= "\$$name has position $position\n";
if ( ! empty( $class ) ) {
$classname = $class->getname();
$details .= "\$$name must be a $classname object\n";
}
if ( $arg->ispassedbyreference() ) {
$details .= "\$$name is passed by reference\n";
}
if ( $arg->isdefaultvalueavailable() ) {
$def = $arg->getdefaultvalue();
$details .= "\$$name has default: $def\n";
}
if ( $arg->allowsnull() ) {
$details .= "\$$name can be null\n";
}
return $details;
}
?>
output:
$title has position 0
$title can be null
$firstname has position 1
$firstname can be null
$mainname has position 2
$mainname can be null
$price has position 3
$price can be null
$playlength has position 4
$playlength has default: 78
$playlength can be null
以上就是php面向对象反射api实例详解的详细内容。