SQL AND and OR operators

[Lucky01]

Simply put, I want to know if you can utilize both of them in a PHP code. I had the following idea:

$sql2 = mysql_query("SELECT * FROM forum WHERE id='$topicsnumber' AND main='0' OR main='1' OR main='2'");   
while($row=mysql_fetch_array($sql2)) {code in here}

Where id='$topicsnumber' AND (main='0' OR main='1' OR main='2') is the condition under which it is checked. Can this be done? I have referred to this article

[jsulm]

@Lucky01 This is Qt forum, not PHP

[JonB]

@Lucky01
So far you have asked about Laravel and SQL in PHP. Why do you want to use this forum if you are using them and not Qt? Beats me.