PHP面向对象程序设计之类与反射API详解

 doSpeak(); ?> 

 Array ( [0] => __construct [1] => getPlayLength [2] => getSummaryLine [3] => getProducerFirstName [4] => getProducerMainName [5] => setDiscount [6] => getDiscount [7] => getTitle [8] => getPrice [9] => getProducer ) 

 $method(); // invoke the method if ( in_array( $method, get_class_methods( $product ) ) ) { print $product->$method(); // invoke the method } if ( is_callable( array( $product, $method) ) ) { print $product->$method(); // invoke the method } if ( method_exists( $product, $method ) ) { print $product->$method(); // invoke the method } print_r( get_class_vars( 'CdProduct' ) ); if ( is_subclass_of( $product, 'ShopProduct' ) ) { print "CdProduct is a subclass of ShopProduct\n"; } if ( is_subclass_of( $product, 'incidental' ) ) { print "CdProduct is a subclass of incidental\n"; } if ( in_array( 'incidental', class_implements( $product )) ) { print "CdProduct is an interface of in<div style="color:transparent">来源gaodai.ma#com搞#代!码网</div>cidental\n"; } ?> 

 title title title title Array ( [coverUrl] => ) CdProduct is a subclass of ShopProduct CdProduct is a subclass of incidental CdProduct is an interface of incidental 

 thirdpartyShop = new OtherShop(); } function __call( $method, $args ) { // 当调用未命名方法时执行call方法 if ( method_exists( $this->thirdpartyShop, $method ) ) { return $this->thirdpartyShop->$method( ); } } } $d = new Delegator(); $d->thing(); ?> 

 thirdpartyShop = new OtherShop(); } function __call( $method, $args ) { if ( method_exists( $this->thirdpartyShop, $method ) ) { return call_user_func_array( array( $this->thirdpartyShop, $method ), $args ); } } } $d = new Delegator(); $d->andAnotherThing( "hi", "hello" ); ?> 

 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"; */ ?>  

 Class [  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 [  private $playLength ] Property [  protected $price ] } - Methods [10] { Method [  public method __construct ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 56 - 61 - Parameters [5] { Parameter #0 [  $title ] Parameter #1 [  $firstName ] Parameter #2 [  $mainName ] Parameter #3 [  $price ] Parameter #4 [  $playLength = 78 ] } } Method [  public method getPlayLength ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 63 - 65 } Method [  public method getSummaryLine ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 67 - 71 } Method [  public method getProducerFirstName ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 17 - 19 } Method [  public method getProducerMainName ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 21 - 23 } Method [  public method setDiscount ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 25 - 27 - Parameters [1] { Parameter #0 [  $num ] } } Method [  public method getDiscount ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 29 - 31 } Method [  public method getTitle ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 33 - 35 } Method [  public method getPrice ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 37 - 39 } Method [  public method getProducer ] { @@ D:\xampp\htdocs\popp-code\5\fullshop.php 41 - 44 } } } 

 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 ); ?> 

 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; } ?> 

 __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 

 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; } ?> 

 $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