怎么知道一个类实例有什么方法和属性?
------解决方案--------------------
例子 1. get_class_methods() 示例
<?php
class myclass {
// constructor
function myclass() {
return(TRUE);
}
// method 1
function myfunc1() {
return(TRUE);
}
// method 2
function myfunc2() {
return(TRUE);
}
}
$my_object = new myclass();
$class_methods = get_class_methods(get_class($my_object));
foreach ($class_methods as $method_name) {
echo "$method_name\n";
}
?>
运行结果:
myclass
myfunc1
myfunc2
例子 1. get_class_vars() 示例
<?php
class myclass {
var $var1; // 此变量没有默认值……
var $var2 = "xyz";
var $var3 = 100;
// constructor
function myclass() {
return(TRUE);
}
}
$my_class = new myclass();
$class_vars = get_class_vars(get_class($my_class));
foreach ($class_vars as $name => $value) {
echo "$name : $value\n";
}
?>
运行结果:
// 在 PHP 4.2.0 之前
var2 : xyz
var3 : 100
// 从 PHP 4.2.0 开始
var1 :
var2 : xyz
var3 : 100
------解决方案--------------------
搜索下php手册,里面有一个反射概念(reflection)
- PHP code
<?phpclass a{ public $abc = 'kkk'; public function test() { echo $this->abc; } }//Instantiate the object$b = new a();//Instantiate the reflection object$reflector = new ReflectionClass('a');//Display the object properties$properties = $reflector->getProperties();foreach($properties as $property){ echo "\$b->", $property->getName(), " => ", $b->{$property->getName()}, "\n";}//Display the object methods$methods = $reflector->getMethods();foreach($methods as $method){ echo "\$b->", $method->getName(), " => ", $b->{$method->getName()}(), "\n";}