JSON not properly inserting into mysql through php - php

Question

I have been trying to insert data from a json file into mysql through php.
I have a function doing the insert in one file, while the decoding is done in another file.
When I run the code, I recieve this error:
You could not be registered due to a system error. We apologize for any inconvenience.
Column 'password' cannot be null
Query: INSERT INTO users (id, email, password, username, deviceId, date_created) VALUES (null, ?, ?, ?, ?, NOW() )
Query was executed
enter code here
Here are my three files:
insertion.php:
//Require files
require('functions.php');
if(file_exists('data.json')){
echo "The file exists ";
$file= file_get_contents('data.json');
echo json_encode('data.json');
$data=json_decode($file, true);
var_dump($data);
$email= $data["email"];
$password= $data["password"];
$username= $data["username"];
$deviceId= $data["deviceId"];
$tableName= 'users';
$email= "email#example.com";
$error=json_last_error();
echo "<br><br>";
echo "your email shoudl be displayed right here: ".$email. "This is email";
echo "<br>JSON Errors will display here:". $error;
$execute= dataInsert($tableName, $email, $password, $username, $deviceId);
if($execute){
echo "Query was executed";
}
}
else{
echo "file does not exist";
}
functions.php:
//------------------------dataInsert()---------------------------//
function dataInsert($tableName, $email, $password, $username, $deviceId){
//set database connection
require('mysqli_connect.php');
if($dbc){
echo "<h3>connection successful</h3>";
}
//form query using the values and tablename
$query = "INSERT INTO users (id, email, password, username, deviceId, date_created)
VALUES (null, ?, ?, ?, ?, NOW() )";
//Prepare statement
$stmt= mysqli_prepare($dbc, $query);
//Bind the variables
mysqli_stmt_bind_param($stmt, 'sssi', $email, $password, $username, $deviceId);
//Execute the query
$result=mysqli_stmt_execute($stmt);
if($result){
echo "Success !";
}
else{
// Public message:
echo 'System Error
<p class="error">You could not be registered due to a system error. We apologize for any inconvenience.</p>';
// Debugging message:
echo '<p>' . mysqli_error($dbc) . '<br /><br />Query: ' . $query . '</p>';
}
mysqli_close($dbc); // Close the database connection.
return true;
}
data.json
<pre>
<code>
{"users":[
{
"email":"fakeemail#gmail.net",
"password":"mypass12",
"username":"myusername",
"deviceId":"21"
}
]}
When I use var_dump to display the json array, it looks correct:
"data.json"array(1) { ["users"]=> array(1) { [0]=> array(4) { ["email"]=> string(19) "fakeemail#gmail.net" ["password"]=> string(6) "mypass12" ["username"]=> string(13) "myusername" ["deviceId"]=> string(2) "21" } } }
I've been able to insert rows into the database, but they were all blank, besides the date, and auto increment id. When I set $email= email#example.com it will display the password cannot be null, but commenting that line out will cause the error to display 'email' cannot be null

Answer 1

You are inserting null into your ID field. Try removing that.

Answer 2

You are accessing the values of the decoded json string wrongly, passing true as the second value of json_decode you get one associative array.
var_dump($data['users'][0]['email']);
Result
fakeemail#...
So you could do something like
if (count($data['users']))
{
foreach($data['users'] as $user)
{
// insert query passing
// $user['email'], $user['password'],
print $user['email'];
}
}