有关PHP回调函数的乌云。

本人较菜，请问各位侠士，如何在PHP中达到EventStack的NotifyWatcher方法可以将取得的数据返还给welcome.php指定的回调函数，我哪里写的不对啊？？？出现的错误为：Fatal error: Function name must be a string in /home/latel/Workspace/new_zhebo/module/EventStack.php on line ××/app/welcome.php<?php

if (!defined("__IS_ROOT")) die("Access Denied");

global $EventStack;

//闭包函数(回调)
$fGetSettings = function($oSettingDaemon) {
 //处理回调返回的系统设置数据模型
 echo $oSettingDaemon;
};

//请求数据原型
$EventStack->addEvent(
 "DATA_REQUEST",
 serialize(array(
 array(
 "request" => "settingDaemon"
 )
 )),
 $fGetSettings,
 null
);
?>/EventStack.php
<?php
//事件堆栈处理组件
/*数
*/
//已知的事件戳记
/*
*/

if (!defined("__IS_ROOT")) die("Access Denied");

class EventStack extends Init{
 private $_aWatcherRegistry = array();//已注册的观察者列表
 private $_aEventStack = array();//事件堆栈
 private $_aCallbackRegistry = array();//已注册的回调函数

 function __construct() {
 }
 function __destruct() {
 //将关键信息存储至数据源的Log表
 //根据调试开关，决定是否输出调试信息至页面
 }
 function __toString() {
 }
 ##A##
 public function addEvent($sStamp = "ISSUE_TRACK", $sValue, $fHandler = null, $mScope = null) {
 /*sStamp: 此条消息的戳记
 *sValue: 序列化的数组
 * fHandler(function): 匿名回调函数
 * mScope(mixed type): 回调函数的上下文环境,
 * null表示传入的handler函数是一个全局函数，
 * 字符串类型表示传入的handler函数是scope类的静态函数，
 * 对象类型表示传入的scope是一个对象，handler函数是对象的一个方法
 */
 $this->_aEventStack[] = array(
 "stamp" => $sStamp,
 "value" => $sValue,
 "handler" => $fHandler,
 "scope" => $mScope,
 "timestamp" => time()
 );
 $iKey = sizeof($this->_aEventStack) - 1;
 $this->notifyWatcher($iKey);
 return $iKey;
 }
 public function addWatcher($oWatcher, $sWatchStamp) {
 }
 ##C##
 public function clearEventStack() {
 //清空事件堆栈
 }
 ##E##
 public function exportEventStack() {
 //输出调试信息
 }
 ##G##
 public function getStack($iStackId) {
 //根据是否提供堆栈序号，返回堆栈列表或指定堆栈的内容
 }
 ##N##
 private function notifyWatcher($iKey) {
 //推送事件至相应的观察者
 if (array_key_exists($this->_aEventStack[$iKey]["stamp"], $this->_aWatcherRegistry)) {
 $mCallback = $this->_aWatcherRegistry[$this->_aEventStack[$iKey]["stamp"]](
 $this->_aEventStack[$iKey]["stamp"],
 $this->_aEventStack[$iKey]["value"],
 $this->_aEventStack[$iKey]["handler"],
 $this->_aEventStack[$iKey]["scope"]
 );
 //如果指定了回调函数，依据观察者返回的数据，做出具体的操作
 if (isset($this->_aEventStack[$iKey]["fHandler"]) && !$mCallback) {
 $func = $this->_aEventStack[$iKey]["fHandler"];
 $func($mCallback);
 } else {
 $func(null);
 }
 }
 }
 ##R##
 public function removeWatcher($sWatchStamp) {
 //移除指定的观察者
 }
}

?>

解决方案 »

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还是那样，连错误信息都不给全！$fGetSettings = function($oSettingDaemon) {
 //处理回调返回的系统设置数据模型
 echo $oSettingDaemon;
};$EventStack = new EventStack;//请求数据原型
$EventStack->addEvent(
 "DATA_REQUEST",
 serialize(array(
 array(
 "request" => "settingDaemon"
 )
 )),
 $fGetSettings,
 null
);class EventStack {
 private $_aWatcherRegistry = array();//已注册的观察者列表
 private $_aEventStack = array();//事件堆栈
 private $_aCallbackRegistry = array();//已注册的回调函数

 function __construct() {
 }
 function __destruct() {
 //将关键信息存储至数据源的Log表
 //根据调试开关，决定是否输出调试信息至页面
 }
 function __toString() {
 }
 ##A##
 public function addEvent($sStamp = "ISSUE_TRACK", $sValue, $fHandler = null, $mScope = null) {
print_r(func_get_args());//传入正确
 /*sStamp: 此条消息的戳记
 *sValue: 序列化的数组
 * fHandler(function): 匿名回调函数
 * mScope(mixed type): 回调函数的上下文环境,
 * null表示传入的handler函数是一个全局函数，
 * 字符串类型表示传入的handler函数是scope类的静态函数，
 * 对象类型表示传入的scope是一个对象，handler函数是对象的一个方法
 */
 $this->_aEventStack[] = array(
 "stamp" => $sStamp,
 "value" => $sValue,
 "handler" => $fHandler,
 "scope" => $mScope,
 "timestamp" => time()
 );
print_r($this->_aEventStack);//赋值正确
 $iKey = sizeof($this->_aEventStack) - 1;
 $this->notifyWatcher($iKey);
 return $iKey;
 }
 public function addWatcher($oWatcher, $sWatchStamp) {
 }
 ##C##
 public function clearEventStack() {
 //清空事件堆栈
 }
 ##E##
 public function exportEventStack() {
 //输出调试信息
 }
 ##G##
 public function getStack($iStackId) {
 //根据是否提供堆栈序号，返回堆栈列表或指定堆栈的内容
 }
 ##N##
 private function notifyWatcher($iKey) {
 //推送事件至相应的观察者
 if (array_key_exists($this->_aEventStack[$iKey]["stamp"], $this->_aWatcherRegistry)) {
 $mCallback = $this->_aWatcherRegistry[$this->_aEventStack[$iKey]["stamp"]](
 $this->_aEventStack[$iKey]["stamp"],
 $this->_aEventStack[$iKey]["value"],
 $this->_aEventStack[$iKey]["handler"],
 $this->_aEventStack[$iKey]["scope"]
 );
 //如果指定了回调函数，依据观察者返回的数据，做出具体的操作
 if (isset($this->_aEventStack[$iKey]["fHandler"]) && !$mCallback) {
 $func = $this->_aEventStack[$iKey]["fHandler"];
 $func($mCallback);
 } else {
 $func(null);
 }
 }
 }
 ##R##
 public function removeWatcher($sWatchStamp) {
 //移除指定的观察者
 }
}Array
(
 [0] => DATA_REQUEST
 [1] => a:1:{i:0;a:1:{s:7:"request";s:13:"settingDaemon";}}
 [2] => Closure Object
 (
 [parameter] => Array
 (
 [$oSettingDaemon] => <required>
 ) ) [3] =>
)
Array
(
 [0] => Array
 (
 [stamp] => DATA_REQUEST
 [value] => a:1:{i:0;a:1:{s:7:"request";s:13:"settingDaemon";}}
 [handler] => Closure Object
 (
 [parameter] => Array
 (
 [$oSettingDaemon] => <required>
 ) ) [scope] =>
 [timestamp] => 1383634959
 ))
板大。您好，我把所有代码都贴出来，您就帮我解决下吧。文件：app/welcome.php<?php//边界判定
if (!defined("__IS_ROOT")) die("Access Denied");
if (!defined("__IS_APP_ENABLE")) die("Access Denied");global $EventStack, $Smarty;$oSettingDaemon = null;
$oArchiveList_Case = null;//闭包函数(回调)
$fGetSettings = function() use (&$oSettingDaemon) {
//处理回调返回的系统设置数据模型
echo "wow";
};$fDataMap = function() use (&$oArchiveList_Case) {
//处理回调返回的数据模型中的数据地图
//模板赋值
echo "dota";
};//请求数据原型
$EventStack->addEvent(//添加数据请求至事件堆栈
"DATA_REQUEST",
serialize(array(
array(
"request" => "settingDaemon"
)
)),
$fGetSettings,
null
);$EventStack->addEvent(//添加数据请求至事件堆栈
"DATA_REQUEST",
serialize(array(
array(
"request" => "archiveList",
"index" => "case",
"sort" => "date DESC",
"limit" => "0, 8"
),
array(
"request" => "archiveList",
"index" => "case",
"sort" => "successful_flag DESC",
"limit" => "0, 8"
),
array(
"request" => "archiveList",
"index" => "detection",
"sort" => "hot_flag DESC",
"limit" => "0, 5"
),
array(
"request" => "archiveList",
"index" => "news",
"sort" => "date DESC",
"limit" => "0, 2"
),
array(
"request" => "archiveList",
"index" => "news_industrial",
"sort" => "hot_flag DESC",
"limit" => "0, 1"
),
array(
"request" => "userList",
"level" => "worker"
),
array(
"request" => "archiveList",
"index" => "news",
"sort" => "count_clicks DESC",
"limit" => "0, 3"
)
)),
$fDataMap,//指定回调函数
null//指明上下文环境
);//为模版绑定数据//输出页面
$Smarty->display("kit-full.tpl");?>文件: EventStack.php<?php
//事件堆栈处理组件
/*
* 堆栈程序应当只负责本职工作，即如实的记录和管理事件堆栈
* 堆栈程序对外界应当仅提供添加观察者,移除观察者,添加事件,清空事件,获取堆栈列表或内容的接口
* 堆栈程序不应当负责对外的逻辑处理
* 通过两种方式主动向外界通讯
* 观察者：当有观察者（通常是个对象）指定的事件发生时，主动调用该组件的__invoke函数
* 回调函数，当添加事件时，事件的添加者可指定一个回调函数，当观察者对此事件做出处理之后，将会激活此回调函数
*/
//已知的事件戳记
/*
* NOTICE, 系统运行时的提示消息
* WARNING, 系统运行时的警告级消息
* ERROR, 系统运行时的错误级消息
* ISSUE_TRACK, 由错误处理和安全组件注册的戳记
* DATA_REQUEST, 由数据模型组件注册的戳记
*/if (!defined("__IS_ROOT")) die("Access Denied");class EventStack extends Init{
private $_aWatcherRegistry = array();//已注册的观察者列表
private $_aEventStack = array();//事件堆栈
private $_aCallbackRegistry = array();//已注册的回调函数 function __construct() {
$this->addEvent(
"NOTICE",
serialize(array("Module(Core) and Module(Pdo) is initiated"))
);
$this->addEvent(
"NOTICE",
serialize(array("Module(EventStack) is initiated"))
);
}
function __destruct() {
//将关键信息存储至数据源的Log表
//根据调试开关，决定是否输出调试信息至页面
$bDebugLock = parent::getArgument("lockring", "debug");
if ($bDebugLock) {
$this->exportEventStack();
}
}
function __toString() {
}
##A##
public function addEvent($sStamp = "ISSUE_TRACK", $sValue, $fHandler = null, $mScope = null) {
/*sStamp: 此条消息的戳记
*sValue: 序列化的数组
* fHandler(function): 匿名回调函数
* mScope(mixed type): 回调函数的上下文环境,
* null表示传入的handler函数是一个全局函数，
* 字符串类型表示传入的handler函数是scope类的静态函数，
* 对象类型表示传入的scope是一个对象，handler函数是对象的一个方法
*/
$this->_aEventStack[] = array(
"stamp" => $sStamp,
"value" => $sValue,
"handler" => $fHandler,
"scope" => $mScope,
"timestamp" => time()
);
$iKey = sizeof($this->_aEventStack) - 1;
$this->toast($iKey);
return $iKey;
}
public function addWatcher($oWatcher, $sWatchStamp) {
//添加观察者
if(is_object($oWatcher)) {
$this->_aWatcherRegistry[$sWatchStamp] = $oWatcher;
$this->addEvent(
"NOTICE",
serialize(array("Watcher($sWatchStamp) is added on EventStack"))
);
}
}
##C##
public function clearEventStack() {
//清空事件堆栈
unset($this->_aEventStack);
$this->addEvent(
"NOTICE",
serialize(array("EventStack is cleared"))
);
}
##E##
public function exportEventStack() {
//输出调试信息
echo "debug";
echo "_________________________________________________> ";
foreach ($this->_aEventStack as $key => $value) {
//if (in_array($value["stamp"], array("NOTICE", "WARNING", "ERROR", "ISSUE_TRACK"))) {
echo "Stackid: $key Stamp ".$value["stamp"]." Backtrace ".$value["value"]." TIMESTAMP ".date("h:m:s",$value["timestamp"])." ";
//}
}
}
##G##
public function getStack($iStackId) {
//根据是否提供堆栈序号，返回堆栈列表或指定堆栈的内容
if ($iStackId) {
if(!isset($_aEventStack[$iStackId])) {
$this->addEvent(
"ISSUE_TRACK",
serialize(array(
"sLevel" => "notice",
"sLocate" => "",
"sMessage" => "Requested stack id($iStackId) doesn't existed in EventStack",
"isLog" => true,
"bDirectOutput" => false
))
);
return null;
} else {
return $_aEventStack[$iStackId];
}
} else {
return $this->_aEventStack;
}
}
##L##
public function loopEvent() {
//遍历事件堆栈
//在所有其他组件运行完成时执行
#如果发现需要回调的或被观察者绑定的事件，则作出具体动作
foreach ($this->_aEventStack as $aEvent) {
//推送相应事件至绑定此类型事件的观察者
if (array_key_exists($aEvent["stamp"], $this->_aWatcherRegistry)) {
$mCallback = $this->_aWatcherRegistry[$aEvent["stamp"]] (
$aEvent["stamp"],
$aEvent["value"]
);
}
//检查回调函数
$fFunc = $aEvent["fHandler"];
if (isset($mCallback) && is_callable($fFunc)) {
$fFunc($mCallback);
} else {
}
}
}
##N##
private function toast($iKey) {
//推送事件至相应的观察者
if (array_key_exists($this->_aEventStack[$iKey]["stamp"], $this->_aWatcherRegistry)) {
$mCallback = $this->_aWatcherRegistry[$this->_aEventStack[$iKey]["stamp"]](
$this->_aEventStack[$iKey]["stamp"],
$this->_aEventStack[$iKey]["value"]
);
//如果指定了回调函数，依据观察者返回的数据，做出具体的操作
if (isset($this->_aEventStack[$iKey]["fHandler"]) && !$mCallback) {
echo $func = $this->_aEventStack[$iKey]["fHandler"];
echo 1;
$func($mCallback);
} else {
echo 2;
$func(null);
}
}
}
##R##
public function removeWatcher($sWatchStamp) {
//移除指定的观察者
unset($this->_aWatcherRegistry[$sWatchStamp]);
if (empty($this->_aWatcherRegistry[$sWatchStamp])) {
$this->addEvent(
"NOTICE",
serialize(array("Watcher($sWatchStamp) is removed"))
);
return true;
} else {
return false;
}
}
}
?>
出错信息：Fatal error: Function name must be a string in C:\wamp\www\newzhebo\module\EventStack.php on line 157Call Stack
# Time Memory Function Location
1 0.0000 146864 {main}( ) ..\index.php:0
2 0.0540 1074504 Init->start( ) ..\index.php:57
3 0.0540 1074520 App->__invoke( ) ..\Init.php:152
4 0.0550 1083208 require_once( 'C:\wamp\www\newzhebo\module\app\welcome.php' ) ..\App.php:30
5 0.0550 1084664 EventStack->addEvent( ) ..\welcome.php:34
6 0.0550 1085176 EventStack->toast( ) ..\EventStack.php:65
文件：Model.php<?php
//数据模型组件if (!defined("__IS_ROOT")) die("Access Denied");interface iModeldo{
function __toString();//将数据模型的数据转化为字符串返回以方便传递
function onModel($sModel, $aArgPack);//生成数据模型
function onModify($sModel, $aSqlPack);//修改数据模型
}class SettingDaemon{
//[系统运行时设置]数据模型
#variables
public $aSettingDaemon; #functions
function __toString() {
$aObjectArray = array(
"asettingdaemon" => $this->aSettingDaemon
);
print_r($aObjectArray);
} function onModel($sModel, $aArgPack) {
if ($sModel != "settingdaemon") return false;
global $Core, $EventStack, $Pdo;
try {
$aDataBaseSoftLink = $Core->getArgument("db", "softLink");
$sTable = $aDataBaseSoftLink["system"];
$sSql = "SELECT * FROM $sTable";
$aResult = $Pdo->query($sSql);
$sSettingDaemon = $aResult->fetchColumn();
$this->aSettingDaemon = unserialize($sSettingDaemon);
//返回数据模型
return $this;
} catch(PDOException $e) {
$EventStack->addEvent(
"ISSUE_TRACK",
serialize(array(
"sLevel" => "ERROR",
"sLocate" => "Model->on->SettingDaemon",
"sMessage" => "Requested Model(SettingDaemon) failed, possibly reason:".$e->getMessage(),
"isLog" => true,
"bDirectOutput" => false
))
);
return false;
}
}
function onModify($sModel, $aSqlPack) {
if ($sModel != "settingdaemon") return false;
global $EventStack, $Pdo;
try {
$aDataBaseSoftLink = $Core->getArgument("db", "softlink");
$sTable = $aDataBaseSoftLink["system"];
foreach ($aSqlPack as $sSql) {
$Pdo->query($sSql);
}
} catch(PDOException $e) {
$EventStack->addEvent(
"ISSUE_TRACK",
serialize(array(
"sLevel" => "ERROR",
"sLocate" => "Model->modify->SettingDaemon",
"sMessage" => "",
"isLog" => true,
"bDirectOutput" => false
))
);
}
}
}class StaticWords{
//[静态文本]数据模型
#variables
public $sWelcomeIntro;
public $sAboutZhebo;
public $sAboutCulture;
public $sAboutLaboratory;
public $sAboutTeam;
public $sAboutHornor;
public $sFootIntro; #functions
function __toString() {
}
function onModel($sModel, $aArgPack) {
if ($sModel != "staticwords") return false;
global $Core, $EventStack, $Pdo;
try {
$aDataBaseSoftLink = $Core->getArgument("db", "softLink");
$sTable = $aDataBaseSoftLink["system"];
$sSql = "SELECT * FROM $sTable";
$aResult = $Pdo->query($sSql);
$aResultLine = $aResult->fetch();
$this->sWelcomeIntro = $aResultLine("introduction_short");
$this->sAboutZhebo = $aResultLine("introduction_all");
$this->sAboutCulture = $aResultLine("introduction_culture");
$this->sAboutLaboratory = $aResultLine("introduction_lab");
$this->sAboutTeam = $aResultLine("introduction_team");
$this->sAboutHornor = $aResultLine("introduction_hornor");
$this->sFootIntro = $aResultLine("introduction_foot");
//返回数据模型
return $this;
} catch(PDOException $e) {
$EventStack->addEvent(
"ISSUE_TRACK",
serialize(array(
"sLevel" => "ERROR",
"sLocate" => "Model->on->SettingDaemon",
"sMessage" => "Requested Model(SettingDaemon) failed, possibly reason:".$e->getMessage(),
"isLog" => true,
"bDirectOutput" => false
))
);
return false;
}
}
function onModify($sModel, $aSqlPack) {
if ($sModel != "staticwords") return false;
global $EventStack, $Pdo;
try {
//取得所需表名
$aDataBaseSoftLink = $Core->getArgument("db", "softlink");
$sTable = $aDataBaseSoftLink["system"];
//验证参数
//生成Sql查询语句
//更新数据
//返回对象
return $this;
} catch(PDOException $e) {
$EventStack->addEvent(
"ISSUE_TRACK",
serialize(array(
"sLevel" => "ERROR",
"sLocate" => "Model->modify->SettingDaemon",
"sMessage" => "",
"isLog" => true,
"bDirectOutput" => false
))
);
}
}
}class ArchiveContent implements iModeldo{
//[文章内容]数据模型
#variables
public $iId;
public $sIndex;
public $iAuthor;
public $sAuthorName;
public $sTimestamp;
public $sTitle;
public $sContent;
public $bHotFlag;
public $iCountClicks; #functions
function __toString() {
}
function onModel($sModel, $aArgPack) {
if ($sModel != "archivecontent") return false;
global $Core, $EventStack;
extract($aArgPack);
try {
//获得所需的数据表名
$aDataBaseSoftLink = $Core->getArgument("db", "softLink");
$sTable = $aDataBaseSoftLink["archive"];
//核实参数
$sSqlId = isset($iId)? " WHERE `id`=$iId": " WHERE `id`=1";
//生成查询Sql
$sSql = "SELECT * FROM $sTable".$sSqlId;
//取得数据
$aResult = $Pdo->query($sSql);
while ($aRow = $aResult->fetch()) {
$this->aArchiveList[] = array(
"id" => $aRow["id"],
"index" => $aRow["index"],
"date" => $aRow["date"],
"author" => $aRow["author"],
"title" => $aRow["title"],
"content" => $aRow["content"],
"hot_flag" => $aRow["hot_flag"],
"successful_flag" => $aRow["successful_flag"],
"count_clicks" => $aRow["count_clicks"]
);
}
//返回数据模型
return $this;
} catch(PDOException $e) {
$EventStack->addEvent(
"ERROR",
serialize(array(
"sLevel" => "ERROR",
"sLocate" => "Model->on->ArchiveContent",
"sMessage" => "Requested Model(ArchiveContent) failed, possibly reason:".$e->getMessage(),
"isLog" => true,
"bDirectOutput" => false
))
);
}
}
function onModify($sModel, $aSqlPack) {
if ($sModel != "archivecontent") return false;
}
}class Model extends Init{
#variables
private $_aModelMap = array();//戳记和类名的实际对应
private $_aModels = array();//已注册的数据模型模块 #functions
function __construct() {
$this->registry();
//添加所有的数据模块至数据模块列表
$this->registerModel("SettingDaemon");
$this->registerModel("StaticWords");
$this->registerModel("ArchiveContent");
$this->registerModel("ArchiveList");
$this->registerModel("UserDetail");
$this->registerModel("UserList");
$this->registerModel("FriendLinkList");
$this->registerModel("ChattingLine");
$this->registerModel("SearchResult");
}
function __invoke($sStamp, $sValue) {
//收到事件堆栈推送的消息
if ($sStamp != "DATA_REQUEST") {
//复查消息戳记
die("Module(Model) recived wrong toast from EventStack");
} else {
$aValue = unserialize($sValue);
//核查参数
if (!is_array($aValue)) {
//数据请求者传递給本组件的参数不合法
} else {
foreach ($aValue as $aArgPack) {
//获得数据模型名
$sModelName = strtolower($aArgPack["request"]);
//提取传递给数据模型的参数列表
array_shift($aArgPack);
//生成需要的数据模型对象
$oModel = $this->creatModel($sModelName);
//添加次数据模型对象至保存的列表
$this->_aModels[] = $oModel;
//继续该数据模型填充数据，并保存至要返回的数据模型列表中
$oModel->onModel($sModelName, $aArgPack);
}
//将所有数据模型对象作为参数返回至事件堆栈, 事件堆栈会视回调函数返回至数据请求方，注意是一个数组
return $this->_aModels;
}
}
} ##R##
function registry() {
//注册此组件为事件堆栈组件的观察者
global $EventStack;
$EventStack->addWatcher($this, "DATA_REQUEST");
$EventStack->addWatcher($this, "DATA_MODIFY");
} private function registerModel($sModelName) {
//注册戳记和类名的对应关系
$this->_aModelMap[strtolower($sModelName)] = $sModelName;
} private function creatModel($sModelName) {
//以工厂模式生成数据模型
if (in_array($sModelName, array_keys($this->_aModelMap))) {
$sClassName = $this->_aModelMap[$sModelName];
return new $sClassName();
} else {
return null;
}
}}?>
文件：App.php<?php
//应用程序组件
/*
* 和前端挂钩的组件
* 从Router组件获得基本的请求信息后
* 1.加载框架，获得框架的数据原型并绑定
* 2.加载具体的页面组件，该页面组件将自行请求数据源型并绑定
* 3.显示合成并处理后的页面
*/if(!defined("__IS_ROOT")) die("Access Denied");class App extends Init{
#variables
private $_sApp;//指定具体的应用组件 #functions
function __construct() {
define("__IS_APP_ENABLE", true);
}
function __invoke() {
//通过使用$App()即可完成页面显示
global $Router;
$aAppAvailableList = parent::getArgument("app");
$sApp = $Router->getController();
if (in_array($sApp, $aAppAvailableList)) {
$this->_sApp = $sApp;
$sFilePath = "module/app/".$sApp.".php";
if (is_file($sFilePath) && is_readable($sFilePath)) {
require_once($sFilePath);
}
}
}
}?>
你给全错误信息不经行了吗？
Fatal error: Function name must be a string in C:\wamp\www\newzhebo\module\EventStack.php on line 157
不就是 EventStack.php 的 157 行出错吗？
EventStack.php
143    private function toast($iKey) {
144        //推送事件至相应的观察者
145        if (array_key_exists($this->_aEventStack[$iKey]["stamp"], $this->_aWatcherRegistry)) {
146            $mCallback = $this->_aWatcherRegistry[$this->_aEventStack[$iKey]["stamp"]](
147                $this->_aEventStack[$iKey]["stamp"],
148                $this->_aEventStack[$iKey]["value"]
149            );
150            //如果指定了回调函数，依据观察者返回的数据，做出具体的操作
151            if (isset($this->_aEventStack[$iKey]["fHandler"]) && !$mCallback) {
152                echo $func = $this->_aEventStack[$iKey]["fHandler"];
153                echo 1;
154                $func($mCallback);
155            } else {
156                echo 2;
157                $func(null); //这个 $func 在哪里赋值的？
            }
        }
    }
154 的是在 152 赋值的，哪 157 的 $func 在哪里赋值的？

至少要把 $func = $this->_aEventStack[$iKey]["fHandler"]; 放到条件分支外面吧？
我把代码改成这样，还是上面的错误。private function toast($iKey) {
//推送事件至相应的观察者
if (array_key_exists($this->_aEventStack[$iKey]["stamp"], $this->_aWatcherRegistry)) {
$mCallback = $this->_aWatcherRegistry[$this->_aEventStack[$iKey]["stamp"]](
$this->_aEventStack[$iKey]["stamp"],
$this->_aEventStack[$iKey]["value"]
);
//如果指定了回调函数，依据观察者返回的数据，做出具体的操作
$func = $this->_aEventStack[$iKey]["fHandler"];
if (isset($this->_aEventStack[$iKey]["fHandler"]) && !$mCallback) {
echo 1;
$func($mCallback);
} else {
echo 2;
$func(null);
}
}
}
var_dump EventStack对象实例的结果如下object(EventStack)[5]
  private '_aWatcherRegistry' =>
    array (size=3)
      'ISSUE_TRACK' =>
        object(Issue)[6]
          private '_aLastIssue' =>
            array (size=0)
              ...
      'DATA_REQUEST' =>
        object(Model)[8]
          private '_aModelMap' =>
            array (size=9)
              ...
          private '_aModels' =>
            array (size=8)
              ...
          protected 'aInitArguments' =>
            array (size=6)
              ...
          protected 'aModules' =>
            array (size=0)
              ...
          private '_aModuleList' (Init) =>
            array (size=11)
              ...
      'DATA_MODIFY' =>
        object(Model)[8]
          private '_aModelMap' =>
            array (size=9)
              ...
          private '_aModels' =>
            array (size=8)
              ...
          protected 'aInitArguments' =>
            array (size=6)
              ...
          protected 'aModules' =>
            array (size=0)
              ...
          private '_aModuleList' (Init) =>
            array (size=11)
              ...
  private '_aEventStack' =>
    array (size=17)
      0 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:41:"Module(Core) and Module(Pdo) is initiated";}' (length=59)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      1 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:31:"Module(EventStack) is initiated";}' (length=49)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      2 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:43:"Watcher(ISSUE_TRACK) is added on EventStack";}' (length=61)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      3 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:26:"Module(Issue) is initiated";}' (length=44)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      4 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:29:"Module(HashUtls) is initiated";}' (length=47)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      5 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:44:"Watcher(DATA_REQUEST) is added on EventStack";}' (length=62)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      6 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:43:"Watcher(DATA_MODIFY) is added on EventStack";}' (length=61)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      7 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:26:"Module(Model) is initiated";}' (length=44)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      8 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:23:"Module(IM) is initiated";}' (length=41)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      9 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:27:"Module(Router) is initiated";}' (length=45)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      10 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:30:"Module(Operation) is initiated";}' (length=48)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      11 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:24:"Module(App) is initiated";}' (length=42)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      12 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:25:"Module(User) is initiated";}' (length=43)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      13 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:29:"Module(ApiChain) is initiated";}' (length=47)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      14 =>
        array (size=5)
          'stamp' => string 'NOTICE' (length=6)
          'value' => string 'a:1:{i:0;s:30:"Module(SmartyMod) is initiated";}' (length=48)
          'handler' => null
          'scope' => null
          'timestamp' => int 1383656323
      15 =>
        array (size=5)
          'stamp' => string 'DATA_REQUEST' (length=12)
          'value' => string 'a:1:{i:0;a:1:{s:7:"request";s:13:"settingDaemon";}}' (length=51)
          'handler' =>
            object(Closure)[21]
              ...
          'scope' => null
          'timestamp' => int 1383656323
      16 =>
        array (size=5)
          'stamp' => string 'DATA_REQUEST' (length=12)
          'value' => string 'a:7:{i:0;a:4:{s:7:"request";s:11:"archiveList";s:5:"index";s:4:"case";s:4:"sort";s:9:"date DESC";s:5:"limit";s:4:"0, 8";}i:1;a:4:{s:7:"request";s:11:"archiveList";s:5:"index";s:4:"case";s:4:"sort";s:20:"successful_flag DESC";s:5:"limit";s:4:"0, 8";}i:2;a:4:{s:7:"request";s:11:"archiveList";s:5:"index";s:9:"detection";s:4:"sort";s:13:"hot_flag DESC";s:5:"limit";s:4:"0, 5";}i:3;a:4:{s:7:"request";s:11:"archiveList";s:5:"index";s:4:"news";s:4:"sort";s:9:"date DESC";s:5:"limit";s:4:"0, 2";}i:4;a:4:{s:7:"request'... (length=814)
          'handler' =>
            object(Closure)[22]
              ...
          'scope' => null
          'timestamp' => int 1383656323
  private '_aCallbackRegistry' =>
    array (size=0)
      empty
  protected 'aInitArguments' =>
    array (size=6)
      'app' =>
        array (size=3)
          0 => string 'about' (length=5)
          1 => string 'archive' (length=7)
          2 => string 'welcome' (length=7)
      'db' =>
        array (size=2)
          'connect' =>
            array (size=3)
              ...
          'softLink' =>
            array (size=9)
              ...
      'lockring' =>
        array (size=2)
          'debug' => boolean true
          'dataUpdate' => boolean true
      'root' =>
        array (size=2)
          'excute' => string '/home/latel/Workspace/zhebo' (length=27)
          'website' => string 'http://www.zhebotest.com/' (length=25)
      'smarty' =>
        array (size=9)
          'template_dir' => string 'assets/html/templates' (length=21)
          'compile_dir' => string 'assets/html/templates_c' (length=23)
          'config_dir' => string 'assets/html/configs' (length=19)
          'cache_dir' => string 'assets/html/cache' (length=17)
          'cache_lifetime' => int 86400
          'caching' => boolean true
          'left_delimiter' => string '{#' (length=2)
          'right_delimiter' => string '#}' (length=2)
          'debugging' => boolean false
      'userInfo' =>
        array (size=7)
          'id' => null
          'level' => null
          'name' => null
          'ip' => null
          'lastActiveTime' => null
          'lastLogTime' => null
          'authToken' => null
  protected 'aModules' =>
    array (size=0)
      empty
  private '_aModuleList' (Init) =>
    array (size=11)
      0 => string 'ApiChain' (length=8)
      1 => string 'App' (length=3)
      2 => string 'EventStack' (length=10)
      3 => string 'HashUtls' (length=8)
      4 => string 'Issue' (length=5)
      5 => string 'IM' (length=2)
      6 => string 'Model' (length=5)
      7 => string 'Operation' (length=9)
      8 => string 'Router' (length=6)
      9 => string 'SmartyMod' (length=9)
      10 => string 'User' (length=4)
【已解决】EventStack.php第151行，我把数组下标写错了。应当是：if (isset($this->_aEventStack[$iKey]["handler"]) && !$mCallback) {
                echo $func = $this->_aEventStack[$iKey]["handler"];
                echo 1;
                $func($mCallback);
            } else {
                echo 2;
                $func(null);
            }望各位看官引以为戒