通过laravel连接Postgresql数据库的问题

Question

我很难用pgsql设置laravel 5.3（在wamp / windows上运行）。当我尝试使用“ php artisan migration”迁移表时，出现错误“ PDO异常-无法找到驱动程序”

1. 我安装了postgres 9.6。
2. 我为postgresql启用了php扩展名：

3.我将postgres库添加到环境路径变量

4. 我用php测试了pdo postgres连接，并且可以连接了：

    $dbh = new PDO("pgsql:dbname=rotocms;host=127.0.0.1", "postgres", "mypassword");

    if($dbh){
     echo "connected";
    }else{
     echo 'there has been an error connecting';
    }

所以我被困住了，无法在Laravel中进行迁移。我的.env：

    DB_CONNECTION = pgsql
    DB_HOST = 127.0.0.1
    DB_PORT = 5432
    DB_DATABASE =我的数据库名称
    DB_USERNAME = postgres
    DB_PASSWORD =密码

这是laravel错误堆栈：

    local.ERROR: PDOException: could not find driver in C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connectors\Connector.php:119
Stack trace:
#0 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connectors\Connector.php(119): PDO->__construct('pgsql:host=127....', 'postgres', 'password', Array)
#1 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connectors\Connector.php(56): Illuminate\Database\Connectors\Connector->createPdoConnection('pgsql:host=127....', 'postgres', 'password', Array)
#2 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connectors\PostgresConnector.php(36): Illuminate\Database\Connectors\Connector->createConnection('pgsql:host=127....', Array, Array)
#3 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connectors\ConnectionFactory.php(100): Illuminate\Database\Connectors\PostgresConnector->connect(Array)
#4 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}()
#5 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connection.php(964): call_user_func(Object(Closure))
#6 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connection.php(832): Illuminate\Database\Connection->getPdo()
#7 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connection.php(717): Illuminate\Database\Connection->reconnectIfMissingConnection()
#8 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Connection.php(350): Illuminate\Database\Connection->run('select * from i...', Array, Object(Closure))
#9 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Schema\PostgresBuilder.php(25): Illuminate\Database\Connection->select('select * from i...', Array)
#10 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Migrations\DatabaseMigrationRepository.php(156): Illuminate\Database\Schema\PostgresBuilder->hasTable('migrations')
#11 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Migrations\Migrator.php(515): Illuminate\Database\Migrations\DatabaseMigrationRepository->repositoryExists()
#12 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Console\Migrations\MigrateCommand.php(92): Illuminate\Database\Migrations\Migrator->repositoryExists()
#13 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Database\Console\Migrations\MigrateCommand.php(58): Illuminate\Database\Console\Migrations\MigrateCommand->prepareDatabase()
#14 [internal function]: Illuminate\Database\Console\Migrations\MigrateCommand->fire()
#15 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Container\Container.php(508): call_user_func_array(Array, Array)
#16 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Console\Command.php(169): Illuminate\Container\Container->call(Array)
#17 C:\wamp64\www\myproject\vendor\symfony\console\Command\Command.php(256): Illuminate\Console\Command->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#18 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Console\Command.php(155): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#19 C:\wamp64\www\myproject\vendor\symfony\console\Application.php(820): Illuminate\Console\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#20 C:\wamp64\www\myproject\vendor\symfony\console\Application.php(187): Symfony\Component\Console\Application->doRunCommand(Object(Illuminate\Database\Console\Migrations\MigrateCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#21 C:\wamp64\www\myproject\vendor\symfony\console\Application.php(118): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#22 C:\wamp64\www\myproject\vendor\laravel\framework\src\Illuminate\Foundation\Console\Kernel.php(121): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#23 C:\wamp64\www\myproject\artisan(35): Illuminate\Foundation\Console\Kernel->handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#24 {main}  

即使我安装了PostgreSQL 9.6，也不确定phpinfo（）中的PostgreSQL（libpq）版本是9.4.4。

Answer 1

你必须寻找几件事，

确保配置“默认”键app/config/database.php

对于postgres，这将是'default' => 'pgsql'，

检查您是否安装了正确的 PHP 扩展。您需要pdo_pgsql.so安装pgsql.so并启用。有关如何执行此操作的说明因操作系统而异。

取消注释行extension=pdo_pgsql.so和extension=pgsql.sophp.ini

现在复制libpq.dll并C:\wamp\bin\php\php5.*\重新C:\wamp\bin\apache*\bin启动所有服务。

如果问题仍然存在，请检查您的Environment Variables.

让我知道结果。