如何获取调用类的名称（在 PHP 中）
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How to get the name of the calling class (in PHP)
提问by Mark Tomlin
define('anActionType', 1);
$actionTypes = array(anActionType => 'anActionType');
class core {
public $callbacks = array();
public $plugins = array();
public function __construct() {
$this->plugins[] = new admin();
$this->plugins[] = new client();
}
}
abstract class plugin {
public function registerCallback($callbackMethod, $onAction) {
if (!isset($this->callbacks[$onAction]))
$this->callbacks[$onAction] = array();
global $actionTypes;
echo "Calling $callbackMethod in $callbacksClass because we got {$actionTypes[$onAction]}" . PHP_EOL;
// How do I get $callbacksClass?
$this->callbacks[$onAction][] = $callbackMethod;
}
}
class admin extends plugin {
public function __construct() {
$this->registerCallback('onTiny', anActionType);
}
public function onTiny() { echo 'tinyAdmin'; }
}
class client extends plugin {
public function __construct() {
$this->registerCallback('onTiny', anActionType);
}
public function onTiny() { echo 'tinyClient'; }
}
$o = new core();
$callbacksClassshould be admin or client. Or am I missing the point here completely and should go about this another way? It should be noted that I will only accept an answer that does not require me to send the classname as an argument to the registerCallback method.
$callbacksClass应该是管理员或客户。还是我完全忽略了这一点，应该以另一种方式解决这个问题？应该注意的是，我只接受不需要我将类名作为参数发送给 registerCallback 方法的答案。
采纳答案by Theodore R. Smith
Use get_class():
使用get_class()：
$this->callbacks[$onAction][] = $callbackMethod;
$className = get_class($this);
// Call callback method
$className->$callbackMethod();
回答by hamstar
If anyone came here looking for how to get the name of a calling class from another class like I did, check this out https://gist.github.com/1122679
如果有人来这里寻找如何像我一样从另一个类中获取调用类的名称，请查看https://gist.github.com/1122679
EDIT: pasted code
编辑：粘贴代码
function get_calling_class() {
//get the trace
$trace = debug_backtrace();
// Get the class that is asking for who awoke it
$class = $trace[1]['class'];
// +1 to i cos we have to account for calling this function
for ( $i=1; $i<count( $trace ); $i++ ) {
if ( isset( $trace[$i] ) ) // is it set?
if ( $class != $trace[$i]['class'] ) // is it a different class
return $trace[$i]['class'];
}
}
EG
例如
class A {
function t() {
echo get_calling_class();
}
}
class B {
function x() {
$a = new A;
$a->t();
}
}
$b = new B;
$b->x(); // prints B
回答by Matthew
You should really do something like:
你真的应该做这样的事情：
$this->registerCallback(array($this, 'onTiny'), anActionType);
That is how PHP works with handles to object methods.
这就是 PHP 处理对象方法句柄的方式。
