PHP MySQL - Error: No Database selected

Question

I am trying to read and write to a database. Here is the code I have so far:

$mysql = mysqli_connect(\"example.com\", \"johndoe\", \"abc123\"); // replace wi         


        

Answer 1

First check mysqli_select_db if it returns false then create database.

try like this:

 $mysql = mysqli_connect("example.com", "johndoe", "abc123") or die(mysqli_connect_error()); // replace with actual credidentials

if (!mysqli_select_db($mysql,'hardestgame_accounts')) {
 $sql = "CREATE DATABASE IF NOT EXISTS hardestgame_accounts";
 if (!mysqli_query($mysql, $sql)) {
    echo "Error creating database: " . mysqli_error($mysql);
 }
}
if (mysqli_connect_errno()) {
    echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql = "CREATE TABLE IF NOT EXISTS Users(ID INT NOT NULL AUTO_INCREMENT, PRIMARY KEY(ID), username CHAR(15), password CHAR(15), email CHAR(50))";
if (!mysqli_query($mysql, $sql)) {
    echo "Error creating table: " . mysqli_error($mysql);
}
mysqli_close($mysql);

here is a good answer: Php mysql create database if not exists