Why does Laravel throw a 'PDOException: Could not Find Driver' error when connecting to PostgreSQL?-PHP Tutorial-php.cn

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Why does Laravel throw a 'PDOException: Could not Find Driver' error when connecting to PostgreSQL?

Mary-Kate Olsen

Dec 02, 2024 pm 02:57 PM

Why does Laravel throw a

Unresolved "PDOException: Could not Find Driver" Error in Laravel While Attempting PostgreSQL Connection

Problem:

You are attempting to connect to a PostgreSQL database via Laravel but encounter the error message "PDOException: Could not Find Driver." Specifically, the issue arises when you run the "php artisan migrate" command, and the database configuration indicates the use of MySQL.

Possible Solutions:

Set Default Connection:

Ensure that the 'default' key in the 'app/config/database.php' file correctly reflects the connection you want to use. For PostgreSQL, it should be:
```
'default' => 'postgres',
```

Install and Configure PHP Extensions:

Verify that you have the necessary PHP extensions installed for PostgreSQL. Specifically, you require 'pdo_pgsql.so' and 'pgsql.so' to be enabled.

Windows Setup:

For Windows systems, these extensions are typically included with the official PHP distribution. In the 'php.ini' file, uncomment the following lines:
```
extension=pdo_pgsql.so
extension=pgsql.so
```
Set the 'extension_dir' value in 'php.ini' to point to the correct PHP extensions directory (e.g., "extension_dir = "c:/wamp/bin/php/php5.5.12/ext/").
Copy 'libpq.dll' from 'C:wampbinphpphp5.' to 'C:wampbinapachebin' and restart all services via WampServer.

Add PostgreSQL Directory to PATH:

In case of persistent issues, add the PostgreSQL bin directory to your PATH. To do this:
- Go to System Properties -> Advanced -> Environment Variables.
- Find the PATH entry in System variables.
- Add the full path to your PostgreSQL bin directory to the end of the PATH.
- Restart your command prompt or computer.

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