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());