如何在PHP中创建对象的副本？
要在PHP中创建对象的副本，代码如下-
示例
<?php
class Demo {
public $val1;
public $val2;
}
$ob = new Demo();
$copyOb = clone $ob;
$ob->val1 = "Jack";
$ob->val2 = "Kevin";
$copyOb->val1 = "Tom";
$copyOb->val2 = "Ryan ";
echo "$ob->val1$ob->val2\n";
echo "$copyOb->val1$copyOb->val2\n";
?>输出结果
这将产生以下输出-
JackKevin TomRyan
示例
现在让我们来看另一个示例-
<?php
class Demo {
public $deptname;
public $deptzone;
public function __construct($a, $b) {
$this->deptname = $a;
$this->deptzone = $b;
}
}
$val = new Demo('Finance', 'West');
$copy = clone $val;
print_r($val);
print_r($copy);
?>输出结果
这将产生以下输出-
Demo Object( [deptname] => Finance [deptzone] => West ) Demo Object( [deptname] => Finance [deptzone] => West )