PHP面向对象程序设计之类与反射API详解
发布时间：2021-01-24 12:49:13 所属栏目：PHP 来源：互联网
导读：这篇文章主要介绍了PHP面向对象程序设计之类与反射API,结合实例形式较为详细的分析了类的验证、检查、传参及反射API等概念与操作技巧,需要的朋友可以参考下
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本文实例讲述了PHP面向对象程序设计之类与反射API。分享给大家供大家参考，具体如下： 了解类
doSpeak();
?>
output: __construct [1] => getPlayLength [2] => getSummaryLine [3] => getProducerFirstName [4] => getProducerMainName [5] => setDiscount [6] => getDiscount [7] => getTitle [8] => getPrice [9] => getProducer )更多验证 $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 ShopProductn"; } if ( is_subclass_of( $product,'incidental' ) ) { print "CdProduct is a subclass of incidentaln"; } if ( in_array( 'incidental',class_implements( $product )) ) { print "CdProduct is an interface of incidentaln"; } ?>output: ) CdProduct is a subclass of ShopProduct CdProduct is a subclass of incidental CdProduct is an interface of incidentalthirdpartyShop = 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(); ?> output: 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" ); ?> output: another thing (hi,hello) 反射APIfullshop.php 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( $title,$price,$playLength=78 ) { parent::__construct( $title,$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( $title,$numPages ) { parent::__construct( $title,$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",30 ); print $product2->getSummaryLine()."n"; */ ?>output: class CdProduct extends ShopProduct ] { @@ D:xampphtdocspopp-code5fullshop.php 53-73 - Constants [0] { } - Static properties [0] { } - Static methods [0] { } - Properties [2] { Property [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。
getName();
if ( $class->isUserDefined() ) {
$details .= "$name is user definedn";
}
if ( $class->isInternal() ) {
$details .= "$name is built-inn";
}
if ( $class->isInterface() ) {
$details .= "$name is interfacen";
}
if ( $class->isAbstract() ) {
$details .= "$name is an abstract classn";
}
if ( $class->isFinal() ) {
$details .= "$name is a final classn";
}
if ( $class->isInstantiable() ) {
$details .= "$name can be instantiatedn";
} else {
$details .= "$name can not be instantiatedn";
}
return $details;
}
$prod_class = new ReflectionClass( 'CdProduct' );
print classData( $prod_class );
?>
output: CdProduct is user defined CdProduct can be instantiated
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 definedn";
}
if ( $method->isInternal() ) {
$details .= "$name is built-inn";
}
if ( $method->isAbstract() ) {
$details .= "$name is abstractn";
}
if ( $method->isPublic() ) {
$details .= "$name is publicn";
}
if ( $method->isProtected() ) {
$details .= "$name is protectedn";
}
if ( $method->isPrivate() ) {
$details .= "$name is privaten";
}
if ( $method->isStatic() ) {
$details .= "$name is staticn";
}
if ( $method->isFinal() ) {
$details .= "$name is finaln";
}
if ( $method->isConstructor() ) {
$details .= "$name is the constructorn";
}
if ( $method->returnsReference() ) {
$details .= "$name returns a reference (as opposed to a value)n";
}
return $details;
}
?>
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