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I'm sorry if the question was already asked, I am new at this.

I have this error :
SQLSTATE[HY093]: Invalid parameter number: parameter was not defined
now that I have put the code in OOP, before it all worked well. Can somebody tell what I am missing ?

Thank you !

class DbModel
    private $dbConnect;

    function __construct()
      $this->dbConnect = new DbConnect();

    public function executeQuery($sql, $data)
        $conn = $this->dbConnect->dbConnect();
        $stmt = $conn->prepare($sql);
        $values = array_values($data);
        $types = str_repeat('s', count($values));
        $stmt->bindParam($types, ...$values);
        return $stmt;

    public function selectOne($table, $conditions)
        $conn = $this->dbConnect->dbConnect();
        $sql = "SELECT * FROM $table";
        $i = 0;
        foreach ($conditions as $key => $value) {
            if ($i === 0) {
                $sql = $sql . " WHERE $key=?";
            } else {
                $sql = $sql . " AND $key=?";

        $sql = $sql . " LIMIT 1";
        $stmt = $this->executeQuery($sql, $conditions);
        $records = $stmt->fetchAll(PDO::FETCH_ASSOC);
        return $records;

        // $stmt = $conn->prepare($sql);
        // $stmt->execute(22);
        // $records = $stmt->fetchAll(PDO::FETCH_ASSOC);
        // var_dump($records);
        // var_dump($records);
        // return $records;

What I have tried:

I search in other forums, I read this but can't understand how to apply it here :
is because the number of elements in $values & $keys is not the same or $keys contains more than 1 element.
CHill60 15-Sep-21 9:16am    
Dump the contents of $sql and $conditions. You have more (or less) "?" in your query than the data you are adding as parameters. It may be that one of the values in $conditions contains a comma?
Member 11746136 15-Sep-21 9:22am    
Console log your final sql statement you will find what you are sending to database and what is the error

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