I need to get the last inserted ID for each insert operation and put it into array, I am trying to see what is the correct way of doing it.
Following this post Which is correct way to get last inserted id in mysqli prepared statements procedural style?
I have tried to apply it to my code but I am still not getting the right response.
if($data->edit_flag == 'ADDED')
{
$rowdata[0] = $data->location_name;
$rowdata[1] = 0;
$rowdata[2] = $data->store_id;
$query = "INSERT IGNORE INTO store_locations (location_name,total_items, store_id) VALUES (?,?,?)";
$statement = $conn->prepare($query);
$statement->execute($rowdata);
$id = mysqli_stmt_insert_id($statement);
echo "inserted id: " . $id;
}
I then realised that I am using a PDO connection so obviously mysqli functions wont work. I went ahead and tried the following
$id = $conn->lastInsertId();
echo "insert id: " . $id;
but the response is still empty? What am I doing incorrectly? For the lastInsertId(), should I be using $conn or $statement from here:
$statement = $conn->prepare($query);
$statement->execute($rowdata);
You are using lastInsertId() correctly according to the PDO:lastInsertId() documentation
$statement = $conn->prepare($query);
$statement->execute($rowdata);
$id = $conn->lastInsertId();
Some potential reasons why it is not working:
Is this code within a TRANSACTION? If so, you need to COMMIT the transaction after the execute and before the lastInsertId()
Since you INSERT IGNORE there is the potential that the INSERT statement is generating an error and not inserting a row so lastInsertId() could potentially be empty.
Hope this helps!
If you are using pdo,
$stmt = $db->prepare("...");
$stmt->execute();
$lastInsId = $db->lastInsertId();
Here is my code
$stmt = $mysqli->prepare("SELECT * FROM `accountsToDo` WHERE `OKrname` = ?");
$stmt->bind_param("s", $OKCUsername);
/* execute prepared statement */
$stmt->execute();
if ($stmt->affected_rows > 0){
echo "Exists";
} else {
$stmt = $mysqli->prepare("INSERT INTO `accountsToDo`(`percentageOfMessages`, `RemoveDeletedAccounts`, `RemoveNoReply`, `RemoveNoResponse`, `minMatchPercent`, `minDistance`, `maxDistance`, `blacklistUsernames`, `userEmail`, `OKrname`, `OKword`) VALUES (?,?,?,?,?,?,?,?,?,?,?)");
$stmt->bind_param("iiiiiiissss", $percentageOfMessages, $RemoveDeletedAccounts, $RemoveNoReply, $RemoveNoResponse, $minMatchPercent, $minDistance, $maxDistance, $blacklistUsernames, $userEmail, $OKrname, $OKword);
$stmt->execute();
}
/* close statement and connection */
$stmt->close();
/* close connection */
$mysqli->close();
But now I'm getting the error,
Call to a member function bind_param() on boolean in line 147.
Line 147 is
$stmt->bind_param("iiiiiiissss", $percentageOfMessages, $RemoveDeletedAccounts, $RemoveNoReply, $RemoveNoResponse, $minMatchPercent, $minDistance, $maxDistance, $blacklistUsernames, $userEmail, $OKrname, $OKword);
If all you are doing is inserting into a todo table if the master table doesn't have a matching row, you don't need two statements.
INSERT INTO `accountsToDo`
(`percentageOfMessages`, `RemoveDeletedAccounts`,
`RemoveNoReply`, `RemoveNoResponse`, `minMatchPercent`,
`minDistance`, `maxDistance`, `blacklistUsernames`,
`userEmail`, `OKrname`, `OKword`)
VALUES (?,?,?,?,?,?,?,?,?,?,?)
WHERE NOT EXISTS (SELECT 1 FROM `accountsToDo` WHERE `OKrname` = ?);
Bind your params and you have save a call to the db. This has the advantage that "SELECT 1" acts as a cut operator so it is only evaluated until it finds the first TRUE.
You are missing a space between table name and a list of fields in your $mysqli->prepare
Try this:
$stmt = $mysqli->prepare("INSERT INTO `accountsToDo`
(`percentageOfMessages`,`RemoveDeletedAccounts`,
`RemoveNoReply`, `RemoveNoResponse`,
`minMatchPercent`, `minDistance`,
`maxDistance`, `blacklistUsernames`,
`userEmail`, `OKrname`, `OKword`)
VALUES (?,?,?,?,?,?,?,?,?,?,?)");
According to manual $mysqli->prepare will return FALSE if statement caused an error
UPDATE
Looks like your $mysqli->prepare is expecting 11 variables and you are trying to bind 12
The issue was that I didn't have
$stmt->store_result();
above the first $stmt->execute();
I am trying to output the variables that I get from the database in my query but nothing is being returned. Using MYSQLi prepared statements.
Please see code below:
$stmt = $con->prepare("SELECT first_name, last_name FROM transactions WHERE order_id = ?");
$stmt->bind_param('i', $order_id);
$stmt->execute();
$stmt->store_result();
$stmt->bind_result($first_name, $last_name);
$stmt->close();
// Output review live to page
echo $first_name;
Where am I going wrong?
You forgot the line to fetch the result. fetch().
Try that:
$stmt->bind_result($first_name, $last_name);
$stmt->fetch(); // ----- > you forget that line to fetch results.
$stmt->close();
I'm quite new at using prepared statements and is wondering if I should close the stmt_init() after each call or could I just keep it open?
$stmt = $mysqli->stmt_init();
if($stmt->prepare("SELECT player_draws, player_turn, player_passes, swapped FROM ".$prefix."_gameplayer WHERE fk_game_id = ? AND fk_player_id = ?")){
$stmt->bind_param('ii', $currgame, $playerid);
$stmt->execute();
$stmt->bind_result($udraws, $uturn, $upass, $uswaps);
$stmt->fetch();
echo $udraws.'-'.$uturn.'-'.$upass.'-'.$uswaps.'<br>';
// Close statement object
$stmt->close();
}
$stmt = $mysqli->stmt_init();
if($stmt->prepare("SELECT player_draws, player_turn, player_passes, swapped FROM ".$prefix."_gameplayer WHERE fk_game_id = ? AND fk_player_id != ?")){
$stmt->bind_param('ii', $currgame, $playerid);
$stmt->execute();
$stmt->bind_result($odraws, $oturn, $opass, $oswaps);
$stmt->fetch();
echo $odraws.'-'.$oturn.'-'.$opass.'-'.$oswaps.'<br>';
// Close statement object
$stmt->close();
}
Is one of them better for the database considering calls?
Thanks in advance!
...A prepared statement or a parameterized statement is used to execute the same statement repeatedly with high efficiency...
EDIT
Since the queries are different each of them will need to be prepared separately but you should be able to reuse the $mysqli->stmt_init();
On a side note someone mentions this in the comments:
*if you are repeating an statement in an loop using bind_param and so on inside it for a larger operation. i thougt id would be good to clean it with stmt->close. but it broke always with an error after aprox. 250 operations . As i tried it with stmt->reset it worked for me.*
How would I mysqli::stmt->bind_param something that's considered as NULL in mysql?
I'm currently using
$stmt->bind_param('s', 'NULL');
bind_param passes variable as reference.
Try:
$null = NULL;
$stmt->bind_param('s', $null);