Squeakasaur Squeakasaur - 1 year ago 112
MySQL Question

Error No Database Selected PHP/mySQL

I have read a bunch of the other posts about similar issues but I am very new to this so I am likely missing something. Most of the other questions I found were a lot more complicated than mine. I am trying to follow the w3schools tutorial for this and am testing locally using XAMPP. Right now I am just trying to get this to work successfully and eventually I am planning to submit data into a mySQL database from a web form.


// Create connection
$conn = mysqli_connect($servername, $dbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());

$sql = "INSERT INTO owner_table (ownerFirst, ownerLast, mobile)
VALUES ('John', 'Doe', '1111111111')";

if (mysqli_query($conn, $sql)) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . mysqli_error($conn);



The connection is not failing from what I can tell. Removing everything after the first if statement, and adding else { echo "success" } outputs success. Again though, I am new to PHP.

If someone knows that the answer has been given in another post PLEASE PLEASE comment here and ill close this out.


Answer Source

You should follow the proper syntax:

$conn = mysqli_connect(<host Name>, <username>, <password>, <database name>);

Reference: http://php.net/manual/en/function.mysqli-connect.php#refsect1-function.mysqli-connect-examples

Add two more parameters- username and password here:

$username = "root";  // Default values
$password = "";      // Default values

$conn = mysqli_connect($servername, $username, $password, $dbname);
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