在 Yii 2.0 报错：PHP Warning: strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243 的分析解决

1、执行命令，报错：PHP Warning: strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243，如图1

图1

PS E:/wwwroot/pcs-api> ./yii cmc-console-user/sync
Exception 'yii/web/ServerErrorHttpException' with message 'Framework Service Console HTTP request failed: 租户信息不存在
'

in E:/wwwroot/pcs-api/common/services/CmcConsoleUserService.php:102

Stack trace:
#0 E:/wwwroot/pcs-api/console/controllers/CmcConsoleUserController.php(62): common/services/CmcConsoleUserService::httpG
etUserList(Array)
#1 [internal function]: console/controllers/CmcConsoleUserController->actionSync()
#2 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)
#3 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Controller.php(157): yii/base/InlineAction->runWithParams(Array)
#4 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Controller.php(148): yii/base/Controller->runAction('sync', Array)
#5 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Module.php(528): yii/console/Controller->runAction('sync', Array)
#6 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Application.php(180): yii/base/Module->runAction('cmc-console-use...',
 Array)
#7 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Application.php(147): yii/console/Application->runAction('cmc-console-
use...', Array)
#8 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Application.php(386): yii/console/Application->handleRequest(Object(yii/c
onsole/Request))
#9 E:/wwwroot/pcs-api/yii(23): yii/base/Application->run()
#10 {main}
PHP Warning:  strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243
PHP Warning:  strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243
PHP Warning:  strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243
PHP Warning:  strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243

2、查看 /console/runtime/logs/app.log

2019-04-02 14:03:05 [-][-][-][warning][yii/log/Dispatcher::dispatch] Unable to send log via yii/log/DbTarget: PHP Warning 'yii/base/ErrorException' with message 'strpos(): Empty needle' 

in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php:243

Stack trace:
#0 [internal function]: yii/base/ErrorHandler->handleError(2, 'strpos(): Empty...', 'E://wwwroot//pcs-...', 243, Array)
#1 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php(243): strpos('yii//base//Applic...', '')
#2 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php(124): yii/log/Target::filterMessages(Array, 0, Array, Array)
#3 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Dispatcher.php(189): yii/log/Target->collect(Array, false)
#4 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Logger.php(177): yii/log/Dispatcher->dispatch(Array, false)
#5 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Logger.php(124): yii/log/Logger->flush()
#6 [internal function]: yii/log/Logger->yii/log/{closure}()
#7 {main}
2019-04-02 14:03:05 [-][-][-][info][application] $_GET = []

$_POST = []

$_FILES = []

$_COOKIE = []

$_SERVER = []

3、在命令行中编辑

	var_dump(strpos("Fabio", 'b'));
	exit;

PS E:/wwwroot/pcs-api> ./yii cmc-console-user/sync
int(2)

4、在命令行中编辑，在控制台命令行中一旦抛出异常，写入日志时，就会报错：PHP Warning: strpos(): Empty needle，如图2

图2

	var_dump(strpos("Fabio", ''));
	exit;

PS E:/wwwroot/pcs-api> ./yii cmc-console-user/sync
PHP Warning 'yii/base/ErrorException' with message 'strpos(): Empty needle'

in E:/wwwroot/pcs-api/console/controllers/CmcConsoleUserController.php:37

Stack trace:
#0 [internal function]: yii/base/ErrorHandler->handleError(2, 'strpos(): Empty...', 'E://wwwroot//pcs-...', 37, Array)
#1 E:/wwwroot/pcs-api/console/controllers/CmcConsoleUserController.php(37): strpos('Fabio', '')
#2 [internal function]: console/controllers/CmcConsoleUserController->actionSync()
#3 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)
#4 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Controller.php(157): yii/base/InlineAction->runWithParams(Array)
#5 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Controller.php(148): yii/base/Controller->runAction('sync', Array)
#6 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Module.php(528): yii/console/Controller->runAction('sync', Array)
#7 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Application.php(180): yii/base/Module->runAction('cmc-console-use...',
 Array)
#8 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Application.php(147): yii/console/Application->runAction('cmc-console-
use...', Array)
#9 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Application.php(386): yii/console/Application->handleRequest(Object(yii/c
onsole/Request))
#10 E:/wwwroot/pcs-api/yii(23): yii/base/Application->run()
#11 {main}
PHP Warning:  strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243
PHP Warning:  strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243
PHP Warning:  strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243
PHP Warning:  strpos(): Empty needle in E:/wwwroot/pcs-api/vendor/yiisoft/yii2/log/Target.php on line 243

5、编辑 /console/config/main.php，调整日志组件的配置

    'components' => [
        'log' => [
            'traceLevel' => YII_DEBUG ? 3 : 0,
            'targets' => [
                'file' => [
                    'class' => 'yii/log/FileTarget',
                    'levels' => ['error', 'warning'],
                ],
                'db' => [
                    'class' => 'yii/log/DbTarget',
                    'except' => ['*'],
                    'prefix' => function () {
                        $url = !Yii::$app->request->isConsoleRequest ? Yii::$app->request->getUrl() : null;
                        $user = Yii::$app->has('user', true) ? Yii::$app->get('user') : null;
                        $userId = $user ? $user->getId(false) : '-';
                        return sprintf('[%s][%s][%s]', Yii::$app->id, $url, $userId);
                    },
                    'logVars' => [],
                ]
            ],
        ],
    ],

调整为：

    'components' => [
        'log' => [
            'traceLevel' => YII_DEBUG ? 3 : 0,
            'targets' => [
                'file' => [
                    'class' => 'yii/log/FileTarget',
                    'levels' => ['error', 'warning'],
                ],
                'db' => [
                    'class' => 'yii/log/DbTarget',
                    'levels' => ['error', 'warning'],
                ],
            ],
        ],
    ],

6、在控制台命令行中一旦抛出异常，写入日志时，报错：PHP Warning: strpos(): Empty needle 的问题已经得到解决

PS E:/wwwroot/pcs-api> ./yii cmc-console-user/sync
PHP Warning 'yii/base/ErrorException' with message 'strpos(): Empty needle'

in E:/wwwroot/pcs-api/console/controllers/CmcConsoleUserController.php:37

Stack trace:
#0 [internal function]: yii/base/ErrorHandler->handleError(2, 'strpos(): Empty...', 'E://wwwroot//pcs-...', 37, Array)
#1 E:/wwwroot/pcs-api/console/controllers/CmcConsoleUserController.php(37): strpos('Fabio', '')
#2 [internal function]: console/controllers/CmcConsoleUserController->actionSync()
#3 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)
#4 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Controller.php(157): yii/base/InlineAction->runWithParams(Array)
#5 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Controller.php(148): yii/base/Controller->runAction('sync', Array)
#6 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Module.php(528): yii/console/Controller->runAction('sync', Array)
#7 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Application.php(180): yii/base/Module->runAction('cmc-console-use...',
 Array)
#8 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/console/Application.php(147): yii/console/Application->runAction('cmc-console-
use...', Array)
#9 E:/wwwroot/pcs-api/vendor/yiisoft/yii2/base/Application.php(386): yii/console/Application->handleRequest(Object(yii/c
onsole/Request))
#10 E:/wwwroot/pcs-api/yii(23): yii/base/Application->run()
#11 {main}