php各種反射類用法執行個體匯總

這篇文章主要介紹了PHP 反射(Reflection)使用執行個體,本文講解了ReflectionClass、ReflectionExtension、 ReflectionFunction、ReflectionMethod、ReflectionObject、ReflectionParameter等類的使用執行個體,需要的朋友可以參考下

PHP Reflection是用於擷取類、擴充、方法、函數、對象、參數、屬性的詳細資料。
ReflectionClass類擷取類相關資訊，如擷取屬性、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;  }} //匯出類ReflectionClass::export('Person'); $r = new ReflectionClass('Person'); //擷取所有屬性print_r($r->getProperties()); /** * 擷取指定屬性 * ReflectionProperty::IS_STATIC * ReflectionProperty::IS_PUBLIC * ReflectionProperty::IS_PROTECTED * ReflectionProperty::IS_PRIVATE */print_r($r->getProperties(ReflectionProperty::IS_PRIVATE)); //擷取注釋print_r($r->getProperty('id')->getDocComment()); //擷取方法print_r($r->getMethods());

ReflectionExtension 類用於擷取擴充相關資訊

$re = new ReflectionExtension('Reflection');print_r($re->getClasses()); //擴充的所有類print_r($re->getClassNames()); //擴充所有類名 $dom = new ReflectionExtension('mysql');print_r($dom->getConstants());//擴充常量print_r($dom->getDependencies());//該擴充依賴print_r($dom->getFunctions());//擴充方法print_r($dom->getINIEntries());//擴充ini資訊print_r($dom->getName());//副檔名稱print_r($dom->getVersion());//擴充版本print_r($dom->info());//擴充資訊print_r($dom->isPersistent());//是否是持久擴充print_r($dom->isTemporary()); //是否是臨時擴充

ReflectionFunction類 使用者擷取函數相關資訊

$rf = new ReflectionFunction('array_merge'); foreach($rf->getParameters() as $item) {  echo $item . PHP_EOL;}

ReflectionMethod類使用者擷取方法相關資訊

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 用於擷取對象相關資訊

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 擷取函數或方法參數的相關資訊。

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()); //0print_r($p->getName()); //v

ReflectionProperty 擷取類的屬性的相關資訊。

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());