PHP PDO + PostgreSQL连接错误:找不到驱动程序

问题描述：

我已经阅读并遵循了一些类似的问题，但一直没有结束，而且对此还很陌生，我认为现在是时候停止尝试"事情了，以防万一我打破任何东西的好时机进一步.

There are a few similar questions that I have read through and followed the advice but to no end, and only being fairly new to this, I figured now was a good time to stop 'trying' things in case I break anything any further.

尝试通过PDO连接到我的数据库时收到以下错误:

Connection error: could not find driver

1.我确保将Apache链接到我的自制PHP.

    $ which php
    /usr/local/bin/php

2.在php.ini

2. Have uncommented the following in php.ini

extension=php_pdo_pgsql.dll

pdo_pgsql模块显示在php_info

3.我的数据库连接是:

    <?php
        class Database
        {
            public $conn;
            public function getConnection()
            {

                try {
                    $this->conn = new PDO("postgres://$user:$pass@$host:$port/$db_name");
                    print_r($this->conn);
                    $this->conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
                    $this->conn->exec("set names utf8");
                } catch (PDOException $exception) {
                    echo "Connection error: " . $exception->getMessage();
                    exit();
                }

                return $this->conn;
            }
        }

我对这些详细信息进行了三重检查，它们是正确的(尽管已省略).我可以通过IntelliJ的数据库连接向导连接相同的URI

4.我已经编辑 /usr/local/var/postgres/postgresql.conf 以包括:

#listen_addresses = '*'

我仍然没有运气，正在寻找有关此头刮刀的一些指导.

I'm still not having any luck and am looking at some guidance in this head scratcher.

答

如我所见，您正在使用Linux，但是尝试启用用于Windows计算机的.dll库.注释这一行很有意义.

As I see you are using Linux, but tried enable .dll library which is used for Windows machines. It makes sense to comment this line.

确保已启用pdo_pgsql模块:

Make sure that you have pdo_pgsql module enabled:

# php -m | grep pdo_pgsql
pdo_pgsql

如果没有安装，请安装

# yum install php-pgsql

这是步骤为了使PHP + PostgreSQL在干净的CentOS 7安装上能够正常运行，

Here is steps that I did to make PHP+PostgreSQL work on my clean CentOS 7 install:

安装PostgreSQL(但我认为您已经安装了PostgreSQL，并且已配置)

Install PostgreSQL (but I think you already have this installed and configured)

# yum install postgresql-server postgresql-contrib

更新的配置/var/lib/pgsql/data/pg_hba.conf，从ident更改为md5

Updated config /var/lib/pgsql/data/pg_hba.conf, changed from ident to md5

host    all             all             127.0.0.1/32            ident
host    all             all             ::1/128                 ident

之后

host    all             all             127.0.0.1/32            md5
host    all             all             ::1/128                 md5

重新启动Postgresql服务

Restart postgresql service

# service postgresql restart

安装PHP和PDO连接器

Install PHP and PDO connector

# yum install php php-pgsql

这是我用来测试连接的PHP脚本示例:

Here is an example of PHP script I used to test connection:

<?php

//  Configure DB Parameters
$host = "localhost";
$dbname = "masterdb";
$dbuser = "automation";
$userpass = "fGmK4hvDZPB6fr6c";

$dsn = "pgsql:host=$host;port=5432;dbname=$dbname;user=$dbuser;password=$userpass";

try{
 // create a PostgreSQL database connection
 $conn = new PDO($dsn);

 // display a message if connected to the PostgreSQL successfully
 if($conn){
 echo "Connected to the $dbname database successfully!";
 echo "\n";
 }
}catch (PDOException $e){
 // report error message
 echo $e->getMessage();
}

输出:

# php pdo_test.php
Connected to the masterdb database successfully!

PHP PDO + PostgreSQL连接错误:找不到驱动程序

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