framework/db/Command.php
protected function bindPendingParams()
    {
        foreach ($this->_pendingParams as $name => $value) {
            $this->pdoStatement->bindValue($name, $value[0], $value[1]);
        }
        $this->_pendingParams = [];
    }
protected function bindPendingParams()
    {
        foreach ($this->_pendingParams as $name => $value) {
            $this->pdoStatement->bindValue($name, $value[0], $value[1]);
        }
        $this->_pendingParams = [];
    }
Binds pending parameters that were registered via [[bindValue()]] and [[bindValues()]].
Note that this method requires an active [[pdoStatement]].