Php and mysql display column names

Question

I have table with the following fields

+----+------+----------+----------+----------+
| id | name | sports_1 | sports_2 | sports_3 |
+----+------+----------+----------+----------+
|  3 | jack |        1 |        0 |        1 |
+----+------+----------+----------+----------+

I want to only display that column names that contain 1. To have the following results.

Jack does sport_1 sports_3

Answer 1

The thing you actually want is another table structure. I'll elaborate a little.

The thing you are describing is a many-to-many relationship. The sports you have in columns should actually be contained in another table called "sports" and in between the "users" table and the "sports" table you have a new table called "users_to_sports" connecting the two.

Check http://sqlrelationship.com/many-to-many-relationship/ for a more in-depth explanation

Answer 2

this is just work around and you may change the structure of your table as chrisR said

but here if you want you can look this if it help you.

    $con = mysql_connect("localhost","root","admin");
     if (!$con)
             {
              die('Could not connect ya rafik : ' . mysql_error());
              }
   mysql_select_db("mydatabase", $con);
   $query = mysql_query("SELECT * FROM mytable2 ORDER BY name ");

   // please use PDO or mysqli instead.

and then you manage results by php like this

   while ($column_data = mysql_fetch_assoc ($query)) {
          echo $column_data['name']." does : ";
        if ($column_data['sports_1'] == 1 ){echo "  Sport1  ";} else {}
        if ($column_data['sports_2'] == 1 ){echo "  Sport2  ";} else {}
        if ($column_data['sports_3'] == 1 ){echo "  Sport3  " ;} else {}
           echo "<br />" ;

      }

the database is like that

id  name    sports_1    sports_2    sports_3
1   Mark      1               0         1
2   John      0               1         1

the the result will be like that:

    John does : Sport2  Sport3
    Mark does : Sport1  Sport3