Combining AND/OR eloquent query in Laravel
You can nest where clauses : http://laravel.com/docs/database/fluent#nested-where
Model::where(function($query){ $query->where('a', 'like', 'keyword'); $query->or_where('b', 'like', 'keyword');})->where('c', '=', '1');
This should produce : SELECT * FROM models WHERE (a LIKE %keyword% OR b LIKE %keyword%) AND c = 1
For a more accurate answer to the example:
$val = '%keyword%';A_Table_Model::where(function($query) use ($val){ $query->where('a', 'like', $val); $query->or_where('b', 'like', $val);})->where('c', '=', 1)->where('d', '=', 5)->get();
Note: This is Laravel 3 syntax, use camelCase orWhere() for Laravel 4