如何循环通过mysqli查询结果？

hi im using the following code to display all the query results but its just giving me one

$do_search=mysqli_query($conx, "SELECT * FROM `vehicles` WHERE `$op` LIKE '%$search%'");
 while ($row = mysqli_fetch_array($do_search)) 
 {
     echo $row['model'];
 }

this code works fine giving me 2 results but when i use

$do_search=mysqli_query($conx, "SELECT * FROM `vehicles` WHERE `$op` LIKE '%$search%'");
 while ($row = mysqli_fetch_array($do_search)) 
 {
     echo $row['id'];
 }

it gives me only one result why?

output for first code:

xk-1 xk-2

output for second code:

2

Your code seems correct, are you sure that your id column in table is not empty.

If it is empty/blank it will be echoing something that you cannot recognize, to investiage you may put a counter and see if the effect is still same.