php - Merging 2 mysql table at specified positions -

i have 2 mysql tables listed below,

//first table (db_event)

id  ||   name  ||  publish  1                  1 2         b          1 3         c          1 4         d          1 5         e          1 6         f          1 

//second table (db_ads)

id  ||  images  ||  publish  1        a.jpg        1 2        b.jpg        1 

i want merge second table db_ads first table db_event @ specified position ie, @ 5th position respectively.

my required result should below table,

//resulting table

id  ||  name  ||  images  ||  publish  1               {null}        1 2        b        {null}        1 3        c        {null}        1 4        d        {null}        1 5        e        {null}        1  1      {null}     a.jpg         1  6        f        {null}        1  2      {null}     b.jpg         1 

is there method achieve result in php or mysql. don't need results in json.

if use,

while($event_rows = mysql_fetch_array($event)) {      $name = $event_rows["name"];      $image= $event_rows["images"]; } echo $name; echo $image; 

the result should appear.

i not find solution, if result depends on id values, may use -

select id, name, null images, publish db_event id < 6 union select id, null name, images, publish db_ads id = 1 ...