how to get get sign up message from my database - php

Question

I'm setting up the wholly organized sign up form, I'm trying to sent into information into my MySQL database server. My code not work and can't figuring out pops up message You have been signed up!
I've tried several options but none of them work on a server,
<?php
if (array_key_exists('email', $_POST) or array_key_exists('password', $_POST)) {
// So I'm guessing here need to some additions of based my own inclinatios.
my code
<?php
if (array_key_exists('email', $_POST) or array_key_exists('password', $_POST)) {
$link = mysqli_connect("localhost", "id8955440_bigebro", "sunshine1987**", "id8955440_bigebro");
if (mysqli_connect_error()) {
die("There was an error connecting to the database");
}
if ($_POST['email'] == '') {
echo "<p>Email address is required.</p>";
} else if ($_POST['password'] == '') {
echo "<p>Password is required.</p>";
} else {
$query = "SELECT `id` FROM `bigebro` WHERE email = '" . mysqli_real_escape_string($link, $_POST['email']) . "'";
$result = mysqli_query($link, $query);
if (mysqli_num_rows($result) > 0) {
echo "<p>That email address has already been taken.</p>";
} else {
$query = "INSERT INTO `bigebro` (`email`, `password`) VALUES ('" . mysqli_real_escape_string($link, $_POST['email']) . "', '" . mysqli_real_escape_string($link, $_POST['password']) . "')";
if (mysqli_query($link, $query)) {
echo "<p>You have been signed up!";
} else {
echo "<p>There was a problem signing you up - please try again later.</p>";
}
}
}
}
?>
HTML
<form method="post">
<input name="email" type="text" placeholder="Email address">
<input name="password" type="password" placeholder="Password">
<input type="submit" value="Sign up">
</form>
$link = mysqli_connect("localhost", "id8955440_bigebro", "sunshine1987**", "id8955440_bigebro");
When I signed up form only pops up "There was a problem signing you up - please try again later" I want to expect to "you have been signed up" from the result
. please see sign up form

Answer 1

Use mysqli_error to track error in query.
$query = "INSERT INTO `bigebro` (`email`, `password`) VALUES ('" . mysqli_real_escape_string($link, $_POST['email']) . "', '" . mysqli_real_escape_string($link, $_POST['password']) . "')";
if (mysqli_query($link, $query)) {
echo "<p>You have been signed up!";
} else {
echo "Error: " . mysqli_error($conn);
}
Also check your db stucture like id should be auto incremented, email and password should be varchar.

Answer 2

you should validate email and password with javascript.
put an echo statement below the line
$query = "INSERT INTO `bigebro` (`email`, `password`) VALUES ('" . mysqli_real_escape_string($link, $_POST['email']) . "', '" . mysqli_real_escape_string($link, $_POST['password']) . "')";
echo $query;
if (mysqli_query($link, $query)) {
echo "<p>You have been signed up!";
} else {
echo "<p>There was a problem signing you up - please try again later.</p>";
}
Run the printed query with the same database credentials. If it runs then the problem is with ur PHP code. u should have INSERT privileges for your database user.