thinkphp How to write a multi-conditional query

thinkphp How to write a multi-conditional query?
For example, table user, field Id,name,nickname. Now according to the name and adress multi-criteria query, $name and $nickname, two conditions are or, not and. How to write?
Also, what if the query condition is an array? For example, $id=array (three-way), look for three data with ID

Reply to discussion (solution)

1:

$a =m (' user); $b = $a->where ("Name= ' Your name ' or nickname= ' your nickname '")->select ();

2:

$a =m (' user '); $data [' id ']=array (' in ', array (+/-));             $b = $a->where ($data)->select ();  

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