I get this error on booking.php
bookings'unsuccessful entry: No database selected
I also have a db_connect.php
<?php
$dbname = "mysql:dbname=lessonbookings";
try{
$db = new PDO($dbname,'root','');
}catch(PDOException $ex){
echo 'connection error: ' . $ex->getMessage();
}
?>
)
I get this error message and I double/tripled checked my database name. I cant figure out what is wrong.
You have an extra space before lesson bookings
Try this one:
$host = "your host name"; //Add your Host Name (probably localhost)
$db = "lesson bookings";
$user = "root";
$password = "";
try{
$db = new PDO("mysql:host=$host;dbname=$db", $user, $password);
}
catch(PDOException $err) {
echo "Error: ".$err->getMessage()."<br/>";
die();
}
Related
Hello could anyone help me please with db connection, im using xampp, phpmyadmin, when i open the browser, DBConnection.class.php it shows blank and db doesnt work, thanks
<?php
class DBConnection{
public static function DbConn(){
$servername = "mysql:host=localhost;dbname=test";
$username = "root";
$password = "";
try{
$conn = new PDO($servername, $username, $password);
return $conn;
echo"Connection succesful :)";
}
catch (PDOException $e) {
echo "Connection failed :( :" . $e->getMessage();
}
}
}
?>
Modified Code. Try this:
class DBConnection{
public static function DbConn(){
$servername = "mysql:host=localhost;dbname=test";
$username = "root";
$password = "";
try{
$conn = new PDO($servername, $username, $password);
return "Connection succesfull :)";
//return $conn;
}
catch (PDOException $e) {
echo "Connection failed :( :" . $e->getMessage();
}
}
}
and then call like this
$Connection = new DBConnection();
print_r($Connection->DbConn());
Okay so I'm using this code to store tables in a variable:
<?php
$host = "localhost";
$user = "x";
$password = "x";
try {
$account = new PDO("mysql:host=$host;dbname=account", $user, $password);
} catch(PDOException $e) {
die('connection cant be made');
}
try {
$player = new PDO("mysql:host=$host;dbname=player", $user, $password);
} catch(PDOException $e) {
die('connection cant be made');
}
and everything I do I get "connection can't be made". So I found another code and I switched to it and everything works.
<?php
$host = "localhost"; // Ip-ul de la server
$user= "xx"; // User-ul de conectare la database
$password = "xx"; // Parola de conectare la database
mysql_connect($server, $user, $password) or die(mysql_error());
mysql_select_db('account');
mysql_set_charset('utf8');
?>
but now I have no db assigned to $account and $player and I can't use my site properly. Ideas?
In $e you have reason why you can't connect to database. Catch exception and do nothing with it...
<?php
define('__DEBUG', true);
try {
$account = new PDO("mysql:host=$host;dbname=account", $user, $password);
} catch(PDOException $e) {
if(__DEBUG) {
print $e->getMessage();
}
die('connection cant be made');
}
for use 2 connections in (not so^) old way style:
$con1 = mysqli_connect();
$con2 = mysqli_connect();
mysqli_query('query', $con1);
mysqli_query('query', $con2);
^ use mysqli_ instead mysql_
This is my code:
<?php
//Connect to DB
$servername = "localhost";
$username = "root";
$password = "";
try {
$conn = new PDO("mysql:host=$servername;dbname=users", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e) {
echo "Connection failed: " . $e->getMessage();
}
function printResult($conn) {
$sql = 'SELECT name FROM info';
foreach ($conn->query($sql) as $row) {
print $row['name'] . "\t";
}
}
?>
But, when I run it, nothing gets printed. What's wrong?
Yes, my table is not empty. I am 100% able select & print data using MySQLi Object-oriented, but not working with PDO. What's wrong in my code?
Call the function
<?php
//Connect to DB
$servername = "localhost";
$username = "root";
$password = "";
try {
$conn = new PDO("mysql:host=$servername;dbname=users", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e) {
echo "Connection failed: " . $e->getMessage();
}
function printResult($conn) {
$sql = 'SELECT name FROM info';
foreach ($conn->query($sql) as $row) {
print $row['name'] . "\t";
}
}
//call the function here
printResult($conn);
?>
To run a function you must call it.
<?php
//Connect to DB
$servername = "localhost";
$username = "root";
$password = "";
try {
$conn = new PDO("mysql:host=$servername;dbname=users", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e) {
echo "Connection failed: " . $e->getMessage();
// and if this fails there is no point continuing so add an exit
exit;
}
function printResult($conn) {
$sql = 'SELECT name FROM info';
foreach ($conn->query($sql) as $row) {
print $row['name'] . "\t";
}
}
printResult($conn); // call the function
?>
You don't call function printResult from anywhere.
Add to your code printResult($conn);
I gotten this error
Database Connected successfully Fatal error: Call to a member function prepare() on a non-object in D:\home\site\wwwroot\DatabaseMethods.php on line 22
I can't seem to find what is causing this any one could point out whats wrong please enlighten me.
I have tried to call the connection before running the prepared statement but cant seems to work or what should i do
Thanks in advance
DatabaseMethods.php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
require_once("DatabaseConnection.php");
date_default_timezone_set("Asia/Singapore");
//Register
function RegisterUser($email , $password)
{
$conn = connect_db();
$stmt = null;
$stmt = $conn->prepare("INSERT INTO secure_login (email,password,created_dt) VALUES(?,?,?)"); //ERROR LINE
$stmt->execute(array($email, $password , date("Y-m-d h:i:s")));
if( $stmt )
{
return "success";
}
else
{
return "Failed";
}
}
//date("Y-m-d h:i:s")
//End Register
?>
DatabaseConnection.php
<?php
function connect_db()
{
$servername = "xxxx";
$username = "xxx";
$password = "xxx";
try {
$conn = new PDO("mysql:host=$servername;dbname=xxx", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Database Connected successfully";
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
}
?>
Answer
<?php
function connect_db()
{
$servername = "xxx";
$username = "xxx";
$password = "xxx";
try {
$conn = new PDO("mysql:host=$servername;dbname=xxx", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Database Connected successfully";
return $conn;
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
}
?>
I am trying to select rows from my database table, and I am getting an error stating that
Fatal error: Call to a member function query() on null in..
Our connection to the database shows successful. Below is my php code:
<?php
require_once("dbconn.php");
$db = getConnection();
$input_pid = "870104-07-5448";
$sql = "SELECT * FROM Pat WHERE PID ='$input_pid'";
$stmt = $db->query($sql);
$row = $stmt->fetchObject();
echo $row->PID;
echo $row->Name;
?>
This is the dbconn.php code:
function getConnection(){
try {
$hostname = "busctrlctr-pc";
$dbname = "DispenserSystem";
$username = "sa";
$password = "123456";
$db = new PDO ("sqlsrv:Server=$hostname;Database=$dbname", $username, $password);
echo 'We are succesful to connect the database !!'.'<br>'; // successful word
} catch (PDOException $e){
echo "connection failed problem is >> ". $e -> getMessage()."\n";
exit;
}
}
Can i know why I am getting this error. Thank you.
You never return $db in your funtion getConnection();
change the funtion to:
function getConnection(){
try {
$hostname = "busctrlctr-pc";
$dbname = "DispenserSystem";
$username = "sa";
$password = "123456";
$db = new PDO ("sqlsrv:Server=$hostname;Database=$dbname", $username, $password);
echo 'We are succesful to connect the database !!'.'<br>'; // successful word
return $db;
} catch (PDOException $e){
echo "connection failed problem is >> ". $e -> getMessage()."\n";
exit;
}
}