WAMP上的Mysqli,错误 - 连接尝试失败

时间:2015-12-17 02:52:12

标签: php codeigniter mysqli

已添加信息:我尝试使用全新安装的codeigniter,只需将$this->load->database ( );添加到默认控制器即可触发相同的错误。

我检查了我的phpinfo并安装了mysqli。我用以下代码检查了它,它正在工作。

当我打开我的一个Codeigniter项目时,它显示错误:连接尝试失败,为什么?

这一切是否意味着Codeigniter出现了问题?

<?php
$mysqli = new mysqli("localhost", "root", "", "myDatabase");

/* check connection */
if ($mysqli->connect_errno) {
    printf("Connect failed: %s\n", $mysqli->connect_error);
    exit();
}

/* check if server is alive */
if ($mysqli->ping()) {
    printf ("Our connection is ok!\n");
} else {
    printf ("Error: %s\n", $mysqli->error);
}

/* close connection */
$mysqli->close();
?>

/*** Results in : Our connection is ok! ***/
  

遇到PHP错误

     

严重性:警告

     

消息:mysqli :: real_connect():( HY000 / 2002):连接尝试   失败,因为关联方在a之后没有正确回应   一段时间,或建立的连接失败,因为连接   主持人没有回复。

     

文件名:mysqli / mysqli_driver.php

     

行号:135

Phpinfo Screen grab

这是问题中的数据库代码,codeigniter系统文件的位置是:system / database / drivers / mysqli / mysqli_driver.php

// --------------------------------------------------------------------

/**
 * Database connection
 *
 * @param   bool    $persistent
 * @return  object
 * @todo    SSL support
 */
public function db_connect($persistent = FALSE)
{
    // Do we have a socket path?
    if ($this->hostname[0] === '/')
    {
        $hostname = NULL;
        $port = NULL;
        $socket = $this->hostname;
    }
    else
    {
        // Persistent connection support was added in PHP 5.3.0
        $hostname = ($persistent === TRUE && is_php('5.3'))
            ? 'p:'.$this->hostname : $this->hostname;
        $port = empty($this->port) ? NULL : $this->port;
        $socket = NULL;
    }

    $client_flags = ($this->compress === TRUE) ? MYSQLI_CLIENT_COMPRESS : 0;
    $mysqli = mysqli_init();

    $mysqli->options(MYSQLI_OPT_CONNECT_TIMEOUT, 10);

    if ($this->stricton)
    {
        $mysqli->options(MYSQLI_INIT_COMMAND, 'SET SESSION sql_mode="STRICT_ALL_TABLES"');
    }

    return $mysqli->real_connect($hostname, $this->username, $this->password, $this->database, $port, $socket, $client_flags)
        ? $mysqli : FALSE;
}

配置文件

$active_group = 'default';
$query_builder = TRUE;

$db['default'] = array(
    'dsn'   => '',
    'hostname' => 'localhost',
    'username' => 'root',
    'password' => '',
    'database' => 'myProject',
    'dbdriver' => 'mysql',
    'dbprefix' => '',
    'pconnect' => FALSE,
    'db_debug' => TRUE,
    'cache_on' => FALSE,
    'cachedir' => '',
    'char_set' => 'utf8',
    'dbcollat' => 'utf8_general_ci',
    'swap_pre' => '',
    'encrypt' => FALSE,
    'compress' => FALSE,
    'stricton' => FALSE,
    'failover' => array(),
    'save_queries' => TRUE
);

1 个答案:

答案 0 :(得分:3)

我想通了,我希望解决方案可以帮助遇到与我相同问题的人。

由于我的服务器运行缓慢,我正在寻找解决方案,我尝试了很多但没有任何效果,然后我将数据库连接的主机名从localhost更改为127.0.0.1并且它工作正常。此更改使 mysqli 工作,使我的服务器更快

现在,codeigniter项目的新配置设置如下所示:

$db['default'] = array(
    'dsn'   => '',
    'hostname' => '127.0.0.1',    // See the change
    'username' => 'root',
    'password' => '',
    'database' => 'myProject',
    'dbdriver' => 'mysqli',       // See the change
    'dbprefix' => '',
    'pconnect' => FALSE,
    'db_debug' => TRUE,
    'cache_on' => FALSE,
    'cachedir' => '',
    'char_set' => 'utf8',
    'dbcollat' => 'utf8_general_ci',
    'swap_pre' => '',
    'encrypt' => FALSE,
    'compress' => FALSE,
    'stricton' => FALSE,
    'failover' => array(),
    'save_queries' => TRUE
);