Invalid parameter in select from database? [duplicate] - php

Question

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MysQl error : Invalid parameter number
(1 answer)
Closed 8 years ago.
Its probley something small but i been looking at this for ages and still cant get it to work at all im getting two errors
Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number: parameter was not defined in
Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number in
the code i have is this:
public function getdata ($tran_id)
{
$sql = "SELECT tran_id, seller_user_name, user_name_buyer
FROM trade_transaction, feedback Where feedback.feedback_username = trade.user_name_of_buyer
AND user_name_of_buyer = :user_name_buyer ";
$sth = $this->db->prepare($sql);
$sth->execute(array(':tran_id' => $tran_id, ':user_name_buyer ' => $_SESSION['user_name']));
$user = $sth->fetch();

Answer 1

You're binding a :tran_id parameter during your call to execute, but you're not using that parameter in your query.
Change your execute line to this
$sth->execute(array(':user_name_buyer ' => $_SESSION['user_name']));

Answer 2

Remove :tran_id from your parameter list or add a condition for that parameter. I hope this help.

Answer 3

Your select statement does not have a where clause for tran_id, either remove the tran_id from your execute call
$sth->execute(array(':user_name_buyer ' => $_SESSION['user_name']));
or add a extra where clause to your sql statement
$sql = "SELECT tran_id, seller_user_name, user_name_buyer
FROM trade_transaction, feedback
WHERE feedback.feedback_username = trade.user_name_of_buyer
AND tran_id = :tran_id
AND user_name_of_buyer = :user_name_buyer ";