I cannot delete database from raw MySql query here. Is there a better way? Please suggest. Is there a way to write a query to drop database in Zend. I'm using Zend 1.11
// Delete db function
public function deleteDB($dbName){
// For database connection
$config = new Zend_Config(
array(
'database' => array(
'adapter' => 'PDO_MYSQL',
'params' => array(
'host' => 'localhost',
'dbname' => $dbName,
'username' => 'root',
'password' => '',
)
)
)
);
$db = Zend_Db::factory($config->database);
//Delete database
$sql = 'DROP DATABASE'. $dbName;
$db->query($sql);
If your configuration is correct then try to put space after DATABASE like
//Delete database
$sql = "DROP DATABASE `". $dbName."`";
$sql = 'DROP DATABASE'. $dbName;
I think you missed a space
$sql = 'DROP DATABASE '. $dbName;
Related
Given the code
$connectionParams = array(
'dbname' => $this->dbname,
'user' => $this->dbuser,
'password' => $this->dbpass,
'host' => $this->dbhost,
'driver' => 'mysqli',
);
$conn = \Doctrine\DBAL\DriverManager::getConnection($connectionParams);
var_dump($conn);
How can I get the underlying mysqli handle from $conn (which is a Doctrine\DBAL\Connection)?
I have found *a way* to access it, but its obviously not the way it's supposed to be done, so I'm up for suggestions:
$conn = \Doctrine\DBAL\DriverManager::getConnection($connectionParams);
foreach((array)$conn->getWrappedConnection() as $mysqli){
// TODO: find official way of getting the handle.
// here we are casting it to (array) to access its PRIVATE PROPERTIES
// it's a fugly hack.
break;
}
var_dump($mysqli);
You can get it this way:
$mysqli = $conn->getWrappedConnection()->getWrappedResourceHandle();
I'm wondering if it's possible to convert a database connection object to an array in PHP? I've been researching, it seems you can cast an object as an array, but it doesn't seem to work for a connection object. Here's my script:
<?php
$dbHost="host";
$dbUser="user";
$dbPass="";
$dbName="root";
$dbConn = mysqli_connect($dbHost,$dbUser,$dbPass,$dbName);
$dbParts = (array) $dbConn;
for ($i=0;$i <=3; $i++){
echo $dbParts[$i];
}
?>
Any help would be greatly appreciated!
**[EDIT]**Why I need to access the db connection as an array is because I need to be able to call certain urls in a script, based on what database I'm connected to, as each environment has a different database.
Build your own array:
$db['localhost'] = array('host' => 'localhost',
'user' => 'root',
'pass' => '****',
'name' => 'database1');
Then if needed add the connection to it:
$db['localhost']['conn'] = mysqli_connect($db['localhost']['host'],
$db['localhost']['user'],
$db['localhost']['pass'],
$db['localhost']['name']);
Other possibilities depending on your needs; define the database as the lookup key:
$db['database1'] = array('host' => 'localhost',
'user' => 'root',
'pass' => '****',
'name' => 'database1');
Or define the environment:
$db['production'] = array('host' => 'localhost',
'user' => 'root',
'pass' => '****',
'name' => 'database1');
Well after a little digging I found this ( Tested ).
It relies on you having access to $dbConn.
You can get the database name being used, using something like...
$result=mysqli_query($dbConn,'SELECT DATABASE() as dbName');
$rows = mysqli_fetch_assoc($result);
var_dump($rows);
which you'd probably turn into a function to make it useful along the lines of...
function getDatabaseName($databaseConnection){
$result=mysqli_query($databaseConnection,'SELECT DATABASE() as dbName');
$row = mysqli_fetch_assoc($result);
return $row['dbName'];
// var_dump($rows);
}
$currentDatabase = getDatabaseName($dbConn);
echo $currentDatabase;
You'll have to play with this to suit...
$servername1 = "localhost1";
$username1 = "user1";
$password1 = "pwd";
$dbname1 = "dbs1";
$servername2 = "localhost2";
$username2 = "user2";
$password2 = "ped2";
$dbname2 = "dbs2";
// Create connection
$conn = new mysqli($servername1, $username1, $password1, $dbname1);
// Check connection
if ($conn->connect_error) {
$conn = new mysqli($servername2, $username2, $password2, $dbname2);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);}
}
Can this type of connection be implemented?? when i implement this deliberately making an error in first database credentials i get a warning that Unknown MySQL server host 'localhost1'
and doesn't load the page. why is this not working?
I make a list of databases and then iterate through them and try to connect. It should be no problem using multiple databases. Using localhost1 and localhost2 (only localhost is possible which is 127.0.0.1) is not possible. You should use IP addresses.
Here is the code:
<?php
$Databases = array(
0 => array(
'db_kind' => 'postgres',
'host' => $server1[$server1["current"]]["host"],
'port' => $server1[$server1["current"]]["port"],
'db_name' => 'database1',
'username' => 'xxx',
'password' => 'yyy',
"type"=>DB_TYPE_3,
),
1 => array(
'db_kind' => 'postgres',
'host' => $server1[$server1["current"]]["host"],
'port' => $server1[$server1["current"]]["port"],
'db_name' => 'database2',
'username' => 'xxx',
'password' => 'yyy',
"type"=>DB_TYPE_2,
),
2 => array(
'db_kind' => 'postgres',
'host' => $server1[$server1["current"]]["host"],
'port' => $server1[$server1["current"]]["port"],
'db_name' => 'database3',
'username' => 'xxx',
'password' => 'yyy',
"type"=>DB_TYPE_1,
),
);
for($i=0;$i<count($Databases);$i++)
{
if($last_db_ind>=count($Databases)){
$last_db_ind=0;
}
if(($db =& db_connect($last_db_ind++))==false){
echo 'Connection failed for DB: '. $Databases["db_name"] . ', DB index: '.$last_db_ind;
continue;
}
?>
You should either use "localhost" or an IP address to connect to the SQL server. In your case it tries to connect to "localhost1" (as in you variable) which doesn't exists (unless you changed your host file). Try using IPs (127.0.0.1 for localhost and any other for the backup)
Cheers,
JCK
You Can try Ping first.
OR
if ($mysqli->connect_errno) {
echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ")
" . $mysqli->connect_error;
}
OR
extension_loaded("mysql");
I would like to setup the database in CakePHP providing host, login and password with a form (so without writing the database.php file myself). The purpose is some kind of automatic setup of CakePHP (I would use this to provide salt and cypherSeed too).
Is this possible? What's the best way to do go? I read something about writing file via PHP...
If you create/load your database connection from your controller you can have this data variable. I don't think it's a good idea to write database.php file with a form.
So I would do something like this:
//Controller
$this->Formdatabase = ClassRegistry::init('Formdatabase');
$db_host = '';//load from file or DB
$db_user = '';//load from file or DB
$db_pass = '';//load from file or DB
$db_database = '';//load from file or DB
ConnectionManager::create("form_database", array(
'datasource' => 'Database/Mysql',
'driver' => 'mysql',
'persistent' => false,
'host' => $db_host,
'login' => $db_user,
'password' => $db_pass,
'database' => $db_database,
'prefix' => '',
'encoding' => 'UTF8',
'port' => '',
));
$this->Formdatabase->useTable = ''; //table you want to use. (in Model or controller)
//Model
<?php
class Formdatabase extends Model {
public $useDbConfig = 'form_database';
}
?>
//Now you can use $this->Formdatabase->find('...'); ...
Hope I could help, good luck!
I'm trying to figure out how to code a loop in a PHP script that:
gets $hostname, $username $password and $platform from an included script for a bunch of MySQL databases (different remote servers with different access credentials) I just have read-only access to
runs the PHP script on each of the databases
I have all the variables stored in an array that looks like this:
$servers = array(
'server1' => array(
'hostname' => '<serverurl>'
'username' => 'readonly',
'password' => 'pword',
'platform' => 'platform'
),
'server2' => array(
'hostname' => 'serverurl'
'username' => 'readonly',
'password' => 'pword',
'platform' => 'platform'
),
},
I'm having trouble figuring out how to pass those values into a loop statement in my PHP script though - how would I make it run on every server in the array?:
$dbhandle = mysql_connect($hostname, $username, $password) or die(mysql_error('Unable to connect to MySQL'));
echo 'Connected to MySQL<br>';
mysql_select_db($platform, $dbhandle) or die(mysql_error('Unable to connect to database'));
echo 'Connected to database<br>';
Sorry for the noob question/if this is a repeat - I couldn't find anything similar when I searched. Is there a good site for me to look up this sort of thing? Thanks!
<?php
$dbhandles = array();
foreach($servers as $server => $details) {
$dbhandles[$server] = mysql_connect($details['hostname'], $details['username'], $details['password']) or die(mysql_error('Unable to connect to MySQL'));
}