Loop in PHP to create array with PHP and Mysql

Question

I want to fill an array with data coming from the database with PHP and Mysql, the array is being filled, but not in the format that would be most functional for the application.
Some hint to change the loop to get to the Idel format of the array?

This is the ideal format for the application:

Array
(
    [0] => survey
    [1] => processing
    [2] => factoring
    [3] => closed
    [4] => developing
)

Loop to create the array:

public function fillArrayPrStatus() {
        try {   
            $this->conn = parent::getConnection();
            $this->pQuery = $this->conn->prepare(   'select status_pr_status '.
                                                    'from pr_status '.
                                                    'where   status_pr_lang=:sessionLanguage'
                                                );
            $this->pQuery->execute(array(   ':sessionLanguage' => session::sessionLanguage()    ));
            if($this->pQuery->errorCode() == 0) {
                $this->get_rows = $this->pQuery->fetchAll();
                foreach($this->get_rows as $this->get_row)  {
                    $this->arrayPrStatus[] = $this->get_row;    
                }   
                return; 
            }   
            else     {
                throw new Exception();
            }   
        }   
        catch (Exception $e)    {
            $tException = new tException();
            $tException -> newException($e->getMessage(), $e->getFile(), $e->getLine(), $e->getTraceAsString());
        }   
    }

Result after the loop:

Array
(
    [0] => Array
        (
            [status_pr_status] => processing
        )

    [1] => Array
        (
            [status_pr_status] => closed
        )

    [2] => Array
        (
            [status_pr_status] => developing
        )

    [3] => Array
        (
            [status_pr_status] => survey
        )

    [4] => Array
        (
            [status_pr_status] => factoring
        )

)

Answer 1

Experiment on the line where you insert the new value into the array, inside the foreach:

...
$this->arrayPrStatus[] = $this->get_row['status_pr_status'];
...