Example of application of reflection in PHP

/** * PHP Reflection Instance * Edit bbs.it-home.org */ Class person{ Public $name; function __construct ($name) { $this->name= $name; } } Interface module{ function execute (); } Class Ftpmodule implements module{ function Sethost ($host) { Print "Ftpmodule::sethost (): $host \ n"; } function SetUser ($user) { Print "Ftpmodule::setuser (): $user \ n"; } function Execute () { Something } } Class Personmodule implements module{ function Setperson (person $person) { Print "personmodule::setperson:{$person->name}\n"; } function Execute () { Something } } Class modulerunner{ Private $configData =array ( "Personmodule" =>array (' person ' = ' bob '), "Ftpmodule" =>array (' host ' = ' example.com ', ' user ' = ' anon ') ); Private $modules =array (); function init () { $interface =new reflectionclass (' Module '); foreach ($this->configdata as $modulename = + $params) { $module _class=new Reflectionclass ($modulename);//Instantiate Reflectionclass based on the name of the configuration ConfigData if (! $module _class->issubclassof ($interface)) {//check reflection to see if the class is a subclass of $interface throw new Exception ("Unknown module type: $modulename");//Not a module subclass throws an exception } $module = $module _class->newinstance ();//Instantiate a ftpmodule or Personmodule object foreach ($module _class->getmethods () as $method) {//Get Methods in class $this->handlemethod ($module, $method, $params); } Array_push ($this->modules, $module);//Place the instantiated module object into the $modules array } } function Handlemethod (Module $module, Reflectionmethod $method, $params) { $name = $method->getname ();//Get Method name $args = $method->getparameters ();//Get the parameters in the method if (count ($args)!=1| | substr ($name, 0,3)! = "Set") {//The check method must start with set and only one parameter return false; } $property =strtolower (substr ($name, 3));//The method name is removed set three letters, as a parameter if (!isset ($params [$property])) {//If the $params array does not contain a property, it returns false return false; } $arg _class=@ $args [0]->getclass;//Check the data type of the first parameter (and unique) of the setter method if (Empty ($arg _class)) { $method->invoke ($module, $params [$property]); }else{ $method->invoke ($module, $arg _class->newinstance ($params [$property]); } } } $test =new Modulerunner (); $test->init (); ?> Copy Code Second, the information of the class is obtained by reflection: /** * PHP Reflection gets the information of the class * Edit bbs.it-home.org */ Class reflectionutil{ static function Getclasssource (Reflectionclass $class) { $path = $class->getfilename (); $lines = @file ($path); $from = $class->getstartline (); $to = $class->getendline (); $len = $to-$from +1; Return implode (Array_slice ($lines, $from-1, $len)); } } $classname = "Person"; $path = ". /practice/{$classname}.php "; if (!file_exists ($path)) { throw new Exception ("No such file as {$path}"); } Require_once ($path); if (!class_exists ($classname)) { throw new Exception ("No such class as {$classname}"); } Print Reflectionutil::getclasssource (new Reflectionclass (' person ')); ?> Copy Code Output Result: Class person{public $age, public $name, function GetName () {return ' ZJX ';} function Getage () {return;} function __tostri Ng () {$rs = $this->getname (); $rs. = "(age". $this->getage (). ")"; return $rs;}}

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