从PHP中的关联数组获取匹配记录

Question

I query a database in PHP which will get results like the following table. These are stored in an associative array.

What I now want to be able to do is select only the records by a certain work_type and return the same type of associative array . For example "Part Time" . Then I want to be able to sort these records according to whatever column I decide. How would I do this?

This is as far as I got...

$data = $_SESSION['results']; //the database query results

foreach($data as $key => $row)
{
    if(in_array($row['work_type'], array('Part Time')))
    {
        $type[$key] = $row['work_type'];
        $date_posted[$key] = $row['created_at'];
    }
}
array_multisort($type, SORT_ASC, $date_posted, SORT_ASC, $data);

This doesn't work because the $data array which I send to multi-sort is a now different size to the ones I created.

Answer 1

Ok I resolved this by just getting the data again from the database. Apparently this is more efficient.