这是我的控制器代码,用于以编程方式设置主机名,用户名,密码,database_name&它在我的代码中正常工作
function submit_installation()
{
$this->load->helper('url');
$this->load->helper('form');
$this->load->database();
if($_POST)
{
//--------------------to config database file----------------------
$old_hostname = '$db[\'default\'][\'hostname\']';
$old_username = '$db[\'default\'][\'username\']';
$old_password = '$db[\'default\'][\'password\']';
$old_database = '$db[\'default\'][\'database\']';
$fileName = "./application/config/database.php";
$file = file($fileName);
foreach( $file as $key=>$line ) {
if( false !== strpos($line, $old_hostname) )
{
$file[$key]=$old_hostname."='".$_POST['hostname']."';\n";
}
elseif( false !== strpos($line, $old_username) )
{
$file[$key]=$old_username."='".$_POST['username']."';\n";
}
elseif( false !== strpos($line, $old_password) )
{
$file[$key]=$old_password."='".$_POST['password']."';\n";
}
elseif( false !== strpos($line, $old_database) )
{
$file[$key]=$old_database."='".$_POST['database']."';\n";
}
}
file_put_contents($fileName, $file);
}
}
在database.php中执行控制器文件&之后的代码显示数据库设置。在database.php文件中进行的更改。
<?php
$active_group = 'default';
$active_record = TRUE
$db['default']['hostname']='xxx';
$db['default']['username']='abc';
$db['default']['password']='abc';
$db['default']['database']='xyz';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = FALSE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
那么如何检查数据库连接是否使用后端代码?
答案 0 :(得分:1)
我想你必须尝试这个:
$db_host = 'localhost';
$db_user = 'abc';
$db_pass = 'xyz';
$db_database = 'qwerty';
$link = mysql_connect($db_host,$db_user,$db_pass) or die('Unable to establish a DB connection');
这个方法很简单。