(PHP 4, PHP 5, PHP 7, PHP 8)
get_parent_class — 返回對象或類的父類名
如果 obj
是對象，則返回對象實(shí)例 obj
所屬類的父類名。
如果 obj
是字符串，則返回以此字符串為名的類的父類名。此功能是在
PHP 4.0.5 中增加的。
注意:
自 PHP 5 起，如果在對象的方法內(nèi)調(diào)用，則
obj為可選項(xiàng)。
示例 #1 使用 get_parent_class()
<?php
class dad {
function dad()
{
// implements some logic
}
}
class child extends dad {
function child()
{
echo "I'm " , get_parent_class($this) , "'s son\n";
}
}
class child2 extends dad {
function child2()
{
echo "I'm " , get_parent_class('child2') , "'s son too\n";
}
}
$foo = new child();
$bar = new child2();
?>
以上例程會(huì)輸出：
I'm dad's son I'm dad's son too
參見 get_class() 和 is_subclass_of()。
objectThe tested object or class name
Returns the name of the parent class of the class of which
object is an instance or the name.
注意:
If the object does not have a parent or the class given does not exist
falsewill be returned.
If called without parameter outside object, this function returns false.
| 版本 | 說明 |
|---|---|
| Before 5.1.0 |
If called without parameter outside object, this function would have
returned null with a warning.
|
| Since 5.0.0 |
The object parameter is optional if called
from the object's method.
|
| Since 4.0.5 |
If object is a string, returns the name of the
parent class of the class with that name.
|
示例 #2 Using get_parent_class()
<?php
class dad {
function dad()
{
// implements some logic
}
}
class child extends dad {
function child()
{
echo "I'm " , get_parent_class($this) , "'s son\n";
}
}
class child2 extends dad {
function child2()
{
echo "I'm " , get_parent_class('child2') , "'s son too\n";
}
}
$foo = new child();
$bar = new child2();
?>
以上例程會(huì)輸出：
I'm dad's son I'm dad's son too