How Can I Modify a Single-Parameter Search Form to Accept Multiple Search Parameters?

Search Form with Multiple Parameters

In your search form implementation, you allow users to input only a single parameter for searching. To enable users to specify multiple parameters, consider modifying your code to dynamically build the search query based on the provided parameters.

Search Form (search.php)

if (
    (isset($_POST['id']) && !empty($_POST['id'])) ||
    (isset($_POST['major']) && !empty($_POST['major'])) ||
    (isset($_POST['college']) && !empty($_POST['college'])) ||
    (isset($_POST['name']) && !empty($_POST['name']))
) {
    $params = array();
    $wheres = array();
    
    if (isset($_POST['id']) && !empty($_POST['id'])) {
        $wheres[] = 'a.uid = :uid';
        $params[':uid'] = $_POST['id'];
    }
    
    if (isset($_POST['major']) && !empty($_POST['major'])) {
        $wheres[] = 'a.major = :major';
        $params[':major'] = $_POST['major'];
    }
    
    if (isset($_POST['college']) && !empty($_POST['college'])) {
        $wheres[] = 'a.college = :college';
        $params[':college'] = $_POST['college'];
    }
    
    if (isset($_POST['name']) && !empty($_POST['name'])) {
        $wheres[] = 'b.name LIKE :name';
        $params[':name'] = '%'.$_POST['name'].'%';
    }
    
    $sql = "SELECT * 
        FROM user_details AS a
        JOIN user AS b ON a.uid = b.id";
    
    if (!empty($wheres)) {
        $sql .= " WHERE " . implode(' AND ', $wheres);
    }
    
    // ... prepare and execute the query ...
    
} else {
    // Handle the case when no parameters are set
}

Results Page (results.php)

// Display the results as before, using a loop and echoing HTML for each result.

By dynamically building the query based on the input parameters, users can now specify multiple parameters in your search form, and the results page will display the students that match all of the specified criteria.

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