I have looked everywhere and keep getting different answers and incorrect code. All I want to do is after I have added a field to my database in MySQL is to get the user_id of the field that has just been created. I just cannot seem to do it?
I am using this to input the field and thanks for any help. It has a auto_increment value of user_id which is what I need to get.
mysqli_query($con,"INSERT INTO users_accounts (business, email_uniq)
VALUES ('$business', '$email_uniq')");
use this after insert query
$last_row = mysqli_insert_id($con);
You can return the primary key of the last row inserted with
$last_id = mysqli_insert_id($con);
You can find more information here: http://php.net/manual/en/mysqli.insert-id.php
After executing the query, you can use mysqli::$insert_id value or mysqli_insert_id function to retrieve the last generated id, like this:
mysqli_query($con,"INSERT INTO users_accounts (business, email_uniq) VALUES ('$business', '$email_uniq')");
$insert_id = mysqli_insert_id($con);
or using the object functions:
$con->query("INSERT INTO users_accounts (business, email_uniq) VALUES ('$business', '$email_uniq')");
$insert_id = $con->insert_id;
edit: Not related, but definitly important!
If the values for either of these parameters $business or $email_uniq are user supplied, it is highly recommended to make sure they are filtered properly. The easiest way is by using a prepared statement for security (http://php.net/manual/en/mysqli.quickstart.prepared-statements.php). Here is your code using prepared statements:
$stmt = $con->prepare("INSERT INTO users_accounts (business, email_uniq) VALUES (?,?)");
$stmt->bind_param("ss", $business, $email_uniq);
$stmt->execute();
$insert_id = $con->insert_id;
Related
I'm sorry about my PHP skills, but I'm just not figuring out how to do this simple task which is INSERT a new row and save its ID into a variable.
Here's what I got:
// mysql inserting a new row
$sql = "INSERT INTO `order` (orderTitle, orderDescription, orderPrice,userID, categoryID)
VALUES('$title', '$description','$price','$userID','$category');";
$sql .= "SELECT LAST_INSERT_ID();";
$result = mysqli_multi_query($con,$sql);
$result_get_id= mysqli_next_result($con);
$row = mysqli_fetch_row($result_get_id);
$order_id = $row[0]; // <-- how to get this value??
I realized row[0] doesn't work, which is why I would like to know how to extract the LAST_INSERT_ID() value correctly.
A couple of things here...
Don't use mysqli_multi_query - it's unnecessary in your example. Use mysqli_query on the INSERT only. No need to query last insert id in SQL.
To get the last insert id, call mysqli_insert_id directly after your INSERT query. You can assign this to a variable, such as $order_id = mysqli_insert_id();
The database class you're using has built in functions for this e.g. mysqli_insert_id(), or for PDO $db->lastInsertId().
$mysqli->query("INSERT INTO order ... ");
printf ("Primary key of new record: %d.\n", $mysqli->insert_id);
http://php.net/manual/en/mysqli.insert-id.php
I am trying to get the id of the last record inserted in an mssql database using pdo via php. I HAVE read many posts, but still can't get this simple example to work, so I am turning to you. Many of the previous answers only give the SQL code, but don't explain how to incorporate that into the PHP. I honestly don't think this is a duplicate. The basic insert code is:
$CustID = "a123";
$Name="James"
$stmt = "
INSERT INTO OrderHeader (
CustID,
Name
) VALUES (
:CustID,
:Name
)";
$stmt = $db->prepare( stmt );
$stmt->bindParam(':CustID', $CustID);
$stmt->bindParam(':Name', $Name);
$stmt->execute();
I have to use PDO querying an MSSQL database. Unfortunately, the driver does not support the lastinsertid() function with this database. I've read some solutions, but need more help in getting them to work.
One post here suggests using SELECT SCOPE_IDENTITY(), but does not give an example of how incorporate this into the basic insert code above. Another user suggested:
$temp = $stmt->fetch(PDO::FETCH_ASSOC);
But, that didn't yield any result.
If your id column is named id you can use OUTPUT for returning the last inserted id value and do something like this:
$CustID = "a123";
$Name="James"
$stmt = "INSERT INTO OrderHeader (CustID, Name)
OUTPUT INSERTED.id
VALUES (:CustID, :Name)";
$stmt = $db->prepare( stmt );
$stmt->bindParam(':CustID', $CustID);
$stmt->bindParam(':Name', $Name);
$stmt->execute();
$result = $stmt->fetch(PDO::FETCH_ASSOC);
echo $result["id"]; //This is the last inserted id returned by the insert query
Read more at:
https://msdn.microsoft.com/en-us/library/ms177564.aspx
http://php.net/manual/es/pdo.lastinsertid.php
EDIT:
Im trying to submit a form with a title and body but i want the title to go to one table and body to go to another table, this in itself i can do but i need the ID generated from the title being inserted into its table to then be inserted into a field in the table the body is inserted so as to keep them linked.
What i have so far: I know its not pretty and its not safe, i will be reworking them once i learn how to do it properly.
if (#$_POST['post'])
{
$body = #$_POST['body'];
$title = #$_POST['title'];
$BoardID = #$_POST['BoardID'];
$MemberID = #$_POST['MemberID'];
$date = date("Y-m-d H:i:s");
include ('connect.php');
$insert = mysql_query("INSERT INTO threads VALUES ('','$BoardID','$title','$date','$MemberID','','')");
if($insert) {
header("location: ?p=posts&thread=$Thread_ID");
exit();
}
}
I need to somehow get $Thread_ID which has been generated in the insert and add that to a second insert for adding body to the post table, if that makes sense.
I tried getting the latest $Thread_ID and adding +1 but if multiple threads are posted at once they might get crossed over.
How would i go about fixing this?
The PHP manual tell us:
This extension Mysql is deprecated as of PHP 5.5.0, and is not recommended for writing new code as it will be removed in the future. Instead, either the mysqli or PDO_MySQL extension should be used.
(see ref.)
You must use mysqli or PDO, to make a connection between PHP and a MySQL database.
mysqli
If you want the id of the inserted row, you can use $mysqli->insert_id (ref)
Example:
$query = "INSERT INTO myCity VALUES (NULL, 'Stuttgart', 'DEU', 'Stuttgart', 617000)";
$mysqli->query($query);
printf ("New Record has id %d.\n", $mysqli->insert_id);
PDO
If you want the id of the inserted row, you can use $dbh->lastInsertId(); (ref)
And don't forget to sanatize all your inputs.
You need to execute both insert queries separately.
$insert = "INSERT INTO threads VALUES ('','$BoardID','$title','$date','$MemberID','','')";
$result = #mysql_query($insert);
$Thread_ID=#mysql_insert_id();
$insert = "INSERT INTO posts VALUES ('','$BoardID',$Thread_ID','$body','$date','$MemberID')";
$result = #mysql_query($insert);
Thanks,
I have a mysql transaction with three queries
In the third query I am trying to pull last_insert_id values from the two previous queries.
VALUES ('".$result1[last_id]."','".$result2[last_id]."')";
But it doesn't work. Any suggestions?
You should get the last insert ID first, and then inject it into the query. Assuming you're using the mysql_ functions:
mysql_query($query1);
$id1 = mysql_insert_id();
mysql_query($query2);
$id2 = mysql_insert_id();
$query3 = "INSERT INTO ... VALUES (".$id1.", ".$id2.");";
mysql_query($query3);
Assuming that you are using MySQL database. You can get id like:
mysql_query($first_query);
$first_result_id = mysql_insert_id();
mysql_query($second_query);
$second_result_id = mysql_insert_id();
$third_query = "INSERT INTO table (column1, column2) VALUES (".$first_result_id .", ".$second_result_id .");";
mysql_query($third_query);
Hope this helps
You can use MySQL to
SELECT LAST_INSERT_ID()
which will retrieve the last insert ID in the given transaction. You can also do this in other DBMS, but you are obviously using MySQL.
Since you are, the MySQL APIs in php have shortcuts for this too:
//mysql_*
$id = mysql_insert_id();
//PDO
$pdo = PDO_OBJECT;
$pdo->query();
$id = $pdo->lastInsertId();
//mysqli
$my = MYSQLI_OBJECT;
$my->query();
$id = $my->insert_id;
NOTE: #HopeIHelped's answer is misleading. There is no race condition as long as you are within the same transaction. LAST_INSERT_ID() retrieves the last ID in the given transactions (and the APIs above do as well), so even if you have this file running a ton of transactions and interlocking queries at once, you can use them safely.
The 'id' field of my table auto increases when I insert a row. I want to insert a row and then get that ID.
I would do it just as I said it, but is there a way I can do it without worrying about the time between inserting the row and getting the id?
I know I can query the database for the row that matches the information that was entered, but there is a high change there will be duplicates, with the only difference being the id.
$link = mysqli_connect('127.0.0.1', 'my_user', 'my_pass', 'my_db');
mysqli_query($link, "INSERT INTO mytable (1, 2, 3, 'blah')");
$id = mysqli_insert_id($link);
See mysqli_insert_id().
Whatever you do, don't insert and then do a "SELECT MAX(id) FROM mytable". Like you say, it's a race condition and there's no need. mysqli_insert_id() already has this functionality.
Another way would be to run both queries in one go, and using MySQL's LAST_INSERT_ID() method, where both tables get modified at once (and PHP does not need any ID), like:
mysqli_query($link, "INSERT INTO my_user_table ...;
INSERT INTO my_other_table (`user_id`) VALUES (LAST_INSERT_ID())");
Note that Each connection keeps track of ID separately (so, conflicts are prevented already).
The MySQL function LAST_INSERT_ID() does just what you need: it retrieves the id that was inserted during this session. So it is safe to use, even if there are other processes (other people calling the exact same script, for example) inserting values into the same table.
The PHP function mysql_insert_id() does the same as calling SELECT LAST_INSERT_ID() with mysql_query().
As to PHP's website, mysql_insert_id is now deprecated and we must use either PDO or MySQLi (See #Luke's answer for MySQLi). To do this with PDO, proceed as following:
$db = new PDO('mysql:dbname=database;host=localhost', 'user', 'pass');
$statement = $db->prepare('INSERT INTO people(name, city) VALUES(:name, :city)');
$statement->execute([':name' => 'Bob', ':city' => 'Montreal']);
echo $db->lastInsertId();
As #NaturalBornCamper said, mysql_insert_id is now deprecated and should not be used. The options are now to use either PDO or mysqli. NaturalBornCamper explained PDO in his answer, so I'll show how to do it with MySQLi (MySQL Improved) using mysqli_insert_id.
// First, connect to your database with the usual info...
$db = new mysqli($hostname, $username, $password, $databaseName);
// Let's assume we have a table called 'people' which has a column
// called 'people_id' which is the PK and is auto-incremented...
$db->query("INSERT INTO people (people_name) VALUES ('Mr. X')");
// We've now entered in a new row, which has automatically been
// given a new people_id. We can get it simply with:
$lastInsertedPeopleId = $db->insert_id;
// OR
$lastInsertedPeopleId = mysqli_insert_id($db);
Check out the PHP documentation for more examples: http://php.net/manual/en/mysqli.insert-id.php
I just want to add a small detail concerning lastInsertId();
When entering more than one row at the time, it does not return the last Id, but the first Id of the collection of last inserts.
Consider the following example
$sql = 'INSERT INTO my_table (varNumb,userid) VALUES
(1, :userid),
(2, :userid)';
$sql->addNewNames = $db->prepare($sql);
addNewNames->execute(array(':userid' => $userid));
echo $db->lastInsertId();
What happens here is that I push in my_table two new rows. The id of the table is auto-increment. Here, for the same user, I add two rows with a different varNumb.
The echoed value at the end will be equal to the id of the row where varNumb=1, which means not the id of the last row, but the id of the first row that was added in the last request.
An example.
$query_new = "INSERT INTO students(courseid, coursename) VALUES ('', ?)";
$query_new = $databaseConnection->prepare($query_new);
$query_new->bind_param('s', $_POST['coursename']);
$query_new->execute();
$course_id = $query_new->insert_id;
$query_new->close();
The code line $course_id = $query_new->insert_id; will display the ID of the last inserted row.
Hope this helps.
Try like this you can get the answer:
<?php
$con=mysqli_connect("localhost","root","","new");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
mysqli_query($con,"INSERT INTO new values('nameuser','2015-09-12')");
// Print auto-generated id
echo "New record has id: " . mysqli_insert_id($con);
mysqli_close($con);
?>
Have a look at following links:
http://www.w3schools.com/php/func_mysqli_insert_id.asp
http://php.net/manual/en/function.mysql-insert-id.php
Also please have a note that this extension was deprecated in PHP 5.5 and removed in PHP 7.0
I found an answer in the above link http://php.net/manual/en/function.mysql-insert-id.php
The answer is:
mysql_query("INSERT INTO tablename (columnname) values ('$value')");
echo $Id=mysql_insert_id();
Try this... it worked for me!
$sql = "INSERT INTO tablename (row_name) VALUES('$row_value')";
if (mysqli_query($conn, $sql)) {
$last_id = mysqli_insert_id($conn);
$msg1 = "New record created successfully. Last inserted ID is: " . $last_id;
} else {
$msg_error = "Error: " . $sql . "<br>" . mysqli_error($conn);
}
Another possible answer will be:
When you define the table, with the columns and data it'll have. The column id can have the property AUTO_INCREMENT.
By this method, you don't have to worry about the id, it'll be made automatically.
For example (taken from w3schools )
CREATE TABLE Persons
(
ID int NOT NULL AUTO_INCREMENT,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Address varchar(255),
City varchar(255),
PRIMARY KEY (ID)
)
Hope this will be helpful for someone.
Edit: This is only the part where you define how to generate an automatic ID, to obtain it after created, the previous answers before are right.