PHP搜索MySQL数据库

Question

Sorry if I'm asking an already answered question, but I was not able to find my specific set-up.

I have a php file called functions.php, where I store all my functions and where I prepare my database. A small example would be as follows:

function getUsers()
{
        global $mysqli,$db_table_prefix;
        $stmt = $mysqli->prepare("SELECT
                id,
                user_name,
                FROM db_users");
        $stmt->execute();
        $stmt->bind_result($id, $user);
        while ($stmt->fetch()){
                $row[] = array('id' => $id, 'user_name' => $user);
        }
        $stmt->close();
        return ($row);
}

I want to make a search function, with a form where I can search with OPTION VALUES, ie values as: id , user_name .

By having functions.php I am already establishing the connection to the mysql database, How can I search the database with my '%searchrequest%' with a search.php?

Or do you suggest another solution?

Answer 1

Just pass these search values into your current function. If nothing is passed,it will fetch all the data. If there is any value passed it will filter based on it.

function getUsers($id="",$user_name="")
{
        global $mysqli,$db_table_prefix;

        $query = "SELECT
                id,
                user_name,
                FROM db_users WHERE 1 = 1 ";
        if(trim($id)) 
           $query .= " AND id = '".$id."'"; 

        if(trim($user_name)) 
           $query .= " AND user_name = '".$user_name."'"; 


        $stmt = $mysqli->prepare($query);


        $stmt->execute();
        $stmt->bind_result($id, $user);
        while ($stmt->fetch()){
                $row[] = array('id' => $id, 'user_name' => $user);
        }
        $stmt->close();
        return ($row);
}