PHP reflection (Reflection) usage examples_PHP tutorial

PHP reflection (Reflection) usage examples

This article mainly introduces PHP reflection (Reflection) usage examples. This article explains ReflectionClass, ReflectionExtension, ReflectionFunction, ReflectionMethod, ReflectionObject, ReflectionParameter For usage examples of other categories, friends who need it can refer to it

PHP Reflection is used to obtain detailed information of classes, extensions, methods, functions, objects, parameters, and properties.

　The ReflectionClass class obtains class-related information, such as obtaining attributes, methods, document comments, etc.

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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());

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<🎜> <🎜> <🎜>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; } } //Export class ReflectionClass::export('Person'); $r = new ReflectionClass('Person'); //Get all attributes print_r($r->getProperties()); /** * 获取指定属性 * ReflectionProperty::IS_STATIC * ReflectionProperty::IS_PUBLIC * ReflectionProperty::IS_PROTECTED * ReflectionProperty::IS_PRIVATE */ print_r($r->getProperties(ReflectionProperty::IS_PRIVATE)); //Get comments print_r($r->getProperty('id')->getDocComment()); //Getting method print_r($r->getMethods());

　ReflectionExtension class is used to obtain extension related information

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$re = new ReflectionExtension('Reflection'); print_r($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

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

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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());

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$re = new ReflectionExtension('Reflection'); print_r($re->getClasses()); //All extended classes print_r($re->getClassNames()); //Expand all class names $dom = new ReflectionExtension('mysql'); print_r($dom->getConstants());//Extended constants print_r($dom->getDependencies());//This extension depends on print_r($dom->getFunctions());//Extension method print_r($dom->getINIEntries());//Extended ini information print_r($dom->getName());//Extension name print_r($dom->getVersion());//Extended version print_r($dom->info());//Extended information print_r($dom->isPersistent());//Whether it is a persistent extension print_r($dom->isTemporary()); //Whether it is a temporary extension

　ReflectionFunction class Users obtain function-related information 　?

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

ReflectionMethod class user obtains method related information 　?

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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 class is used to obtain object-related information

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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());

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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

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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());

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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 Gets information about function or method parameters. 　?

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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 Gets information about the properties of the class. 　?

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class Person { /**test*/ 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());

http://www.bkjia.com/PHPjc/1000099.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1000099.htmlTechArticlePHP Reflection Usage Examples This article mainly introduces PHP Reflection usage examples. This article explains ReflectionClass, ReflectionExtension, ReflectionFunction, Reflec...