如何在bellow类中打印动态添加属性？
class Car {
function __construct() {
}
function setInfo($car_arr) {
foreach ($car_arr as $key => $value) {
$this->{$key} = $value;
}
}
}
设置类对象，如下面的
$car1 = new Car();
$car1->setInfo(array('make' => 'Toyota', 'model' => 'scp10'));
$car2 = new Car();
$car2->setInfo(array('anme1' => 'value1', 'anme2' => 'value2'));
现在我想在下面打印汽车对象
make = Toyota
model = scp10
尝试：
$car1 = new Car();
$car1->setInfo(array('make' => 'Toyota', 'model' => 'scp10'));
echo $car1->make;
echo $car1->model;
<?php
class Car {
function __construct() {
}
function setInfo($car_arr) {
foreach ($car_arr as $key => $value) {
$this->{$key} = $value;
}
}
}
$car1 = new Car();
$car1->setInfo(array('make' => 'Toyota', 'model' => 'scp10'));
echo "Make value is : " . $car1->make. ", Model value is : ". $car1->model;
?>
以上代码输出Make value is : Toyota, Model value is : scp10
请考虑像我在回答中指出的那样显式存储属性：
<?php
class Car {
private $data = array();
function setInfo(array $carInfo) {
foreach ($carInfo as $k => $v) {
$this->data[$k] = $v;
}
return $this;
}
function __set($key, $val) {
$this->data[$key] = $val;
}
function __get($key) {
return $this->data[$key];
}
}
$car = new Car();
$car->setInfo(array('make' => 'Toyota', 'warranty' => '5 years'));
我认为它更"干净"，但这可能是有争议的。
我认为您正在寻找类似以下PHP魔术方法的东西
例如这个：
<?php
class A
{
public $var1;
public $var2;
public static function __set_state($an_array) // As of PHP 5.1.0
{
$obj = new A;
$obj->var1 = $an_array['var1'];
$obj->var2 = $an_array['var2'];
return $obj;
}
}
$a = new A;
$a->var1 = 5;
$a->var2 = 'foo';
eval('$b = ' . var_export($a, true) . ';'); // $b = A::__set_state(array(
// 'var1' => 5,
// 'var2' => 'foo',
// ));
var_dump($b);
?>
这也会有所帮助。
您可以使用get_object_vars((获取所有属性：
$vars = get_object_vars($car1);
foreach ($vars as $key => $value) {
echo $key . ' = ' . $value . '<br />';
}