Join two MySQL tables with PHP

Question

For example, I have created two pages and two MySQL tables.

Index.php & citys.php

citys

 ID            


        

Answer 1

select * from citys 
left join comments on comments.city = citys.city 
where citys.id=$id

Answer 2

Use this query

$sql = "SELECT * FROM citys LEFT JOIN comments ON comments.city=citys.city WHERE citys.id=$id";

Use leftjoin for this type of work