Failed to query daabaseNo database selected - php

Question

i am getting error no database is selected can anybody correct the code.
I am trying to learn php and mysql. So i tried making a database using
phpmyadmin and connect it with my php. Here is a simple example where I try to see if the database is working.
<?php
//Get values passe from form in donateform.html.
$link;
$Name = $_POST['Name'];
$Mobile = $_POST['Mobile'];
$Email = $_POST['Email'];
$Donating =isset($_POST['Donating']);
$Address = isset($_POST['Address']);
//To prevent mysql injection
$Name = stripcslashes($Name);
$Mobile = stripcslashes($Mobile);
$Email = stripcslashes($Email);
$Donating = stripcslashes($Donating);
$Address = stripcslashes($Address);
//connect to the server and select database.
$link=mysqli_connect("localhost", "gooddeeds", "");
mysqli_select_db($link,"donaters");
$Name = mysqli_real_escape_string($link,$Name);
$Mobile = mysqli_real_escape_string($link,$Mobile);
$Email = mysqli_real_escape_string($link,$Email);
$Donating = mysqli_real_escape_string($link,$Donating);
$Address = mysqli_real_escape_string($link,$Address);
//Query the database for user
$result =mysqli_query($link,"INSERT INTO donaters (Name, Mobile, Email, Donating, Address) VALUES ('$Name', '$Mobile', '$Email', '$Donating', '$Address')")
or die("Failed to query daabase".mysqli_error($link));
if(mysqli_query($result)){
echo "Records inserted successfully.";
} else{
echo "ERROR: Could not able to execute $sql. ".mysqli_error($link);
}
?>
and i get
Database query failed::: No database selected
which means this part of code
//connect to the server and select database.
$link=mysqli_connect("localhost", "gooddeeds", "");
mysqli_select_db($link,"donaters");
is not working (i put a different number of these ":" in each if. Any help would be appreciated! Thank you!

Answer 1

You can try with following as databasename.tablename (gooddeeds.donaters)
INSERT INTO gooddeeds.donaters (Name, Mobile, Email, Donating, Address) VALUES ('$Name', '$Mobile', '$Email', '$Donating', '$Address')

Answer 2

This is by the first example in the php documentation. Try the the conditional to check connection.
$link = mysqli_connect("127.0.0.1", "my_user", "my_password", "my_db");
if (!$link) {
echo "Error: Unable to connect to MySQL." . PHP_EOL;
echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
exit;
}