SQLSRV 查询失败，出现致命错误“已达到最大函数嵌套级别 '256'，正在中止！”答案

【问题标题】：SQLSRV query fail with fatal error 'Maximum function nesting level of '256' reached, aborting!'SQLSRV 查询失败，出现致命错误“已达到最大函数嵌套级别 '256'，正在中止！”
【发布时间】：2015-12-03 06:38:33
【问题描述】：

我在config/database.php中有多个数据库连接：

'connections' => [
    'mysql' => [
        'driver'    => 'mysql',
        'read' => [
            'host' => env('DB_READ_HOST', 'localhost'),
        ],
        'write' => [
            'host' => env('DB_WRITE_HOST', 'localhost'),
        ],
        'database'  => env('DB_DATABASE', ''),
        'username'  => env('DB_USERNAME', ''),
        'password'  => env('DB_PASSWORD', ''),
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
    ],
    'sqlsrv' => [
        'driver'   => 'sqlsrv',
        'host'     => 'localhost',
        'database' => 'mytest',
        'username' => '',
        'password' => '',
        'charset'  => 'utf8',
        'prefix'   => '',
    ],
]

我使用Query Builder从sqlserver查询数据：

DB::connection('sqlsrv')->table($this->table)
    ->where('FDate', date('Ymd'))
    ->take(1)
    ->get();

会得到Fatal error:

PHP Fatal error:  Maximum function nesting level of '256' reached, aborting! in Unknown on line 0
PHP Stack trace:
PHP   1. {main}() /Users/..../fork/artisan:0
PHP   2. Illuminate\Foundation\Console\Kernel->handle() /Users/..../fork/artisan:36
PHP   3. Symfony\Component\Console\Application->run() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php:107
PHP   4. Symfony\Component\Console\Application->doRun() /Users/..../fork/vendor/symfony/console/Application.php:120
PHP   5. Symfony\Component\Console\Application->doRunCommand() /Users/..../fork/vendor/symfony/console/Application.php:189
PHP   6. Illuminate\Console\Command->run() /Users/..../fork/vendor/symfony/console/Application.php:838
PHP   7. Symfony\Component\Console\Command\Command->run() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Console/Command.php:136
PHP   8. Illuminate\Console\Command->execute() /Users/..../fork/vendor/symfony/console/Command/Command.php:256
PHP   9. Illuminate\Container\Container->call() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Console/Command.php:150
PHP  10. call_user_func_array:{/Users/..../fork/vendor/laravel/framework/src/Illuminate/Container/Container.php:503}() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Container/Container.php:503
PHP  11. App\Console\Commands\SyncTWSE5MinutesChartSource->handle() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Container/Container.php:503
PHP  12. App\Models\SqlSrv\QTSE012->demo() /Users/..../fork/app/Console/Commands/SyncTWSE5MinutesChartSource.php:19
PHP  13. Illuminate\Database\Query\Builder->get() /Users/..../fork/app/Models/SqlSrv/QTSE012.php:15
PHP  14. Illuminate\Database\Query\Builder->runSelect() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php:1383
PHP  15. Illuminate\Database\Query\Builder->toSql() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php:1406
PHP  16. Illuminate\Database\Query\Grammars\SqlServerGrammar->compileSelect() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php:1315
PHP  17. Illuminate\Database\Query\Grammars\Grammar->compileComponents() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/SqlServerGrammar.php:32
PHP  18. Illuminate\Database\Query\Grammars\SqlServerGrammar->compileFrom() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/Grammar.php:62
PHP  19. Illuminate\Database\Query\Grammars\Grammar->compileFrom() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/SqlServerGrammar.php:78
PHP  20. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/Grammar.php:120
PHP  21. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  22. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  23. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  24. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  25. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  26. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  27. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  28. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  29. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  30. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  31. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  32. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  33. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  34. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  35. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  36. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  37. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  38. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  39. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  40. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  41. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  42. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  43. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  44. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  45. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  46. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  47. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  48. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  49. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  50. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  51. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  52. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  53. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  54. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  55. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  56. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  57. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  58. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  59. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  60. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77
PHP  61. Illuminate\Database\Grammar->wrap() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:39
PHP  62. Illuminate\Database\Grammar->wrapTable() /Users/..../fork/vendor/laravel/framework/src/Illuminate/Database/Grammar.php:77

我将xdebug 设置更改如下：

[xdebug]
zend_extension="/usr/local/opt/php56-xdebug/xdebug.so"
xdebug.max_nesting_level = 1000

但仍然出现同样的错误。
这发生在 Laravel 5.1.25 (LTS) 中。

我的 PHP 版本如下：

PHP 5.6.16 (cli) (built: Nov 28 2015 22:22:08) 
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
    with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies
    with Xdebug v2.3.3, Copyright (c) 2002-2015, by Derick Rethans

【问题讨论】：

标签： laravel-5.1 xdebug sqlsrv

【解决方案1】：

我会检查$this->table 中使用的表名。它有别名吗？它是否包含数据库名称和句点，然后是表名称？

在 Illuminate\Database\Grammar 中： https://github.com/laravel/framework/blob/5.1/src/Illuminate/Database/Grammar.php#L77 wrapTable() 调用wrap()，wrap() 可以调用wrapTable()。

取决于表名，它可能会进入一个巨大的递归循环

【讨论】：