WHICH ONE IS BETTER FOR NEWBIE?

 1 DROP PROCEDURE IF EXISTS w_array;
 2 DELIMITER /w/
 3 CREATE PROCEDURE w_array (w_arr  VARCHAR(36))
 4 BEGIN
 5 WHILE (LOCATE(',', w_arr) > 0)
 6 DO
 7         SET @w = LOCATE(',', w_arr);
 8     SET @wtab = SUBSTRING_INDEX(w_arr,',',1);
 9     SET @wtab = CONCAT('grab_reviews_',@wtab);
10 
11         SET @wtmp =  CONCAT('UPDATE  ',@wtab,' SET asin=exact_asin ');
12         PREPARE  stmt FROM @wtmp ;
13         EXECUTE  stmt  ;
14         DROP PREPARE stmt;
15 
16         SET w_arr=SUBSTRING(w_arr,@w+1);
17 
18 END WHILE;
19 
20     SET @wtab = CONCAT('grab_reviews_',w_arr);
21         SET @wtmp =  CONCAT('UPDATE  ',@wtab,' SET asin=exact_asin ');
22         PREPARE  stmt FROM @wtmp ;
23         EXECUTE  stmt  ;
24         DROP PREPARE stmt;
25 
26 END/w/
27 DELIMITER;
28 CALL w_array('us,jp,uk,de,fr,ca,es,it,mx,in');

1 <?php
2 $warr = array('us', 'jp', 'uk', 'de', 'fr', 'ca', 'es', 'it', 'mx', 'in');
3 $sql = 'UPDATE grab_reviews_';
4 $w = '';
5 foreach ($warr AS $one) {
6     $w .= 'UPDATE grab_reviews_' . $one . ' SET asin=exact_asin ; ';
7 }
8 echo $w;

 1 DROP PROCEDURE IF EXISTS w_array;
 2 DELIMITER /w/
 3 CREATE PROCEDURE w_array ()
 4 BEGIN
 5 SET @w_arr = 'us,jp,uk,de,fr,ca,es,it,mx,in';
 6 WHILE (LOCATE(',', @w_arr) > 0)
 7 DO
 8         SET @w = LOCATE(',', @w_arr);
 9     SET @wtab = SUBSTRING_INDEX(@w_arr,',',1);
10     SET @wtab = CONCAT('grab_reviews_',@wtab);
11 
12         SET @wtmp =  CONCAT('UPDATE  ',@wtab,' SET asin=exact_asin ');
13         PREPARE  stmt FROM @wtmp ;
14         EXECUTE  stmt  ;
15         DROP PREPARE stmt;
16 
17         SET @w_arr=SUBSTRING(@w_arr,@w+1);
18 
19 END WHILE;
20 
21     SET @wtab = CONCAT('grab_reviews_',@w_arr);
22         SET @wtmp =  CONCAT('UPDATE  ',@wtab,' SET asin=exact_asin ');
23         PREPARE  stmt FROM @wtmp ;
24         EXECUTE  stmt  ;
25         DROP PREPARE stmt;
26 
27 END/w/
28 DELIMITER;
29 CALL w_array;