php - How to put a while loop in a variable? -

OK, actually this code is not high!

  $ toq = mysql_query ("select from users") or die (mysql_error ()); $ From = while ($ row = mysql_fetch_array ($ toq)) {echo "". $ Row ['Mail']. ","; }; Echo per $;    
 
 
 You want to save all the entries in an array, such as:   from  $ = array (); While ($ line = mysql_fetch_array ($ toq)) {$ to [] = $ line ['mail']; }   
 Then, use echo as a comma-separated string:  
  echo fonts (',', $ to);   
 This is better than alternative, which is to use string combination, but essentially adding an extra comma at the end:  
  $ to = ''; While ($ line = mysql_fetch_array ($ toq)) {$ to. = $ Row ['Mail'] ','; }   
 To delete that sequential comma, use it:  
  $ to = rtrim ($ to, ',');