這篇文章主要介紹了PHP 反射(Reflection)使用實例,本文講解了ReflectionClass、ReflectionExtension、 ReflectionFunction、ReflectionMethod、ReflectionObject、ReflectionParameter等類的使用實例,需要的朋友可以參考下
PHP Reflection是用于獲取類、擴展、方法、函數、對象、參數、屬性的詳細信息。
ReflectionClass類獲取類相關信息,如獲取屬性、方法、文檔注釋等。
- <?php
- class Person {
- /**
- * For the sake of demonstration, we"re setting this private
- */
- private $_allowDynamicAttributes = false;
- /** type=primary_autoincrement */
- protected $id = 0;
- /** type=varchar length=255 null */
- protected $name;
- /** type=text null */
- protected $biography;
- public function getId()
- {
- return $this->id;
- }
- public function setId($v)
- {
- $this->id = $v;
- }
- public function getName()
- {
- return $this->name;
- }
- public function setName($v)
- {
- $this->name = $v;
- }
- public function getBiography()
- {
- return $this->biography;
- }
- public function setBiography($v)
- {
- $this->biography = $v;
- }
- }
- //導出類
- ReflectionClass::export('Person');
- $r = new ReflectionClass('Person');
- //獲取所有屬性
- print_r($r->getProperties());
- /**
- * 獲取指定屬性
- * ReflectionProperty::IS_STATIC
- * ReflectionProperty::IS_PUBLIC
- * ReflectionProperty::IS_PROTECTED
- * ReflectionProperty::IS_PRIVATE
- */
- print_r($r->getProperties(ReflectionProperty::IS_PRIVATE));
- //獲取注釋
- print_r($r->getProperty('id')->getDocComment());
- //獲取方法
- print_r($r->getMethods());
ReflectionExtension 類用于獲取擴展相關信息
- $re = new ReflectionExtension('Reflection');
- print_r($re->getClasses()); //擴展的所有類
- print_r($re->getClassNames()); //擴展所有類名
- $dom = new ReflectionExtension('mysql');
- print_r($dom->getConstants());//擴展常量
- print_r($dom->getDependencies());//該擴展依賴
- print_r($dom->getFunctions());//擴展方法
- print_r($dom->getINIEntries());//擴展ini信息
- print_r($dom->getName());//擴展名稱
- print_r($dom->getVersion());//擴展版本
- print_r($dom->info());//擴展信息
- print_r($dom->isPersistent());//是否是持久擴展
- print_r($dom->isTemporary()); //是否是臨時擴展
ReflectionFunction類 用戶獲取函數相關信息
- $rf = new ReflectionFunction('array_merge');
- foreach($rf->getParameters() as $item) {
- echo $item . PHP_EOL;
- }
ReflectionMethod類用戶獲取方法相關信息
- class Person {
- public $name;
- /**
- * get name of person
- */
- public function getName()
- {
- return $this->name;
- }
- public function setName($v)
- {
- $this->name = $v;
- }
- }
- $rm = new ReflectionMethod('Person', 'getName');
- print_r($rm->isPublic());
- print_r($rm->getDocComment());
ReflectionObject 類 用于獲取對象相關信息
- class Person {
- public $name;
- public function __construct($name)
- {
- $this->name = $name;
- }
- public function getName()
- {
- return $this->name;
- }
- public function setName($v)
- {
- $this->name = $v;
- }
- }
- $a = new Person('a');
- $ro = new ReflectionObject($a);
- print_r($ro->getMethods());
ReflectionParameter 獲取函數或方法參數的相關信息。
- class Person {
- public $name;
- public function __construct($name)
- {
- $this->name = $name;
- }
- public function getName()
- {
- return $this->name;
- }
- public function setName($v)
- {
- $this->name = $v;
- }
- }
- $p = new ReflectionParameter(array('Person', 'setName'), 0);
- print_r($p->getPosition()); //0
- print_r($p->getName()); //v
ReflectionProperty 獲取類的屬性的相關信息。
- class Person {
- /** 測試 */
- public $name;
- public function __construct($name)
- {
- $this->name = $name;
- }
- public function getName()
- {
- return $this->name;
- }
- public function setName($v)
- {
- $this->name = $v;
- }
- }
- $p = new ReflectionProperty('Person', 'name');
- print_r($p->getDocComment());
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