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PHP Reflection是用于获取类、扩展、方法、函数、对象、参数、属性的详细信息。
ReflectionClass类获取类相关信息,如获取属性、方法、文档注释等。
<?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;}} //导出类ReflectionClass::export("Person"); $r = new ReflectionClass("Person"); //获取所有属性print_r($r->getProperties()); /** * 获取指定属性 * ReflectionProperty::IS_STATIC * ReflectionProperty::IS_PUBLIC * ReflectionProperty::IS_PROTECTED * ReflectionProperty::IS_PRIVATE */print_r($r->getProperties(ReflectionProperty::IS_PRIVATE)); //获取注释print_r($r->getProperty("id")->getDocComment()); //获取方法print_r($r->getMethods());

ReflectionExtension 类用于获取扩展相关信息
$re = new ReflectionExtension("Reflection");print_r($re->getClasses()); //扩展的所有类print_r($re->getClassNames()); //扩展所有类名 $dom = new ReflectionExtension("mysql");print_r($dom->getConstants());//扩展常量print_r($dom->getDependencies());//该扩展依赖print_r($dom->getFunctions());//扩展方法print_r($dom->getINIEntries());//扩展ini信息print_r($dom->getName());//扩展名称print_r($dom->getVersion());//扩展版本print_r($dom->info());//扩展信息print_r($dom->isPersistent());//是否是持久扩展print_r($dom->isTemporary()); //是否是临时扩展

 ReflectionFunction类 用户获取函数相关信息
$rf = new ReflectionFunction("array_merge"); foreach($rf->getParameters() as $item) {echo $item . PHP_EOL;}

ReflectionMethod类用户获取方法相关信息
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 类 用于获取对象相关信息

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 获取函数或方法参数的相关信息。

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()); //0print_r($p->getName()); //v
ReflectionProperty 获取类的属性的相关信息。

class Person { /** 测试 */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());