我有一个查询，工作和运行良好，但我想显示我的所有项目之前，搜索一个特定的。当我点击搜索btn而不输入任何内容时，它会显示我的所有项目，我想显示它们而不需要按搜索btn。

include_once('includes/db_connect.inc.php');
$output = '';
if (isset($_POST['search'])) {
    $searchq = $_POST['search'];
    $searchq = preg_replace("#[^0-9a-z]#i", "", $searchq);
    $sql_search = "SELECT * FROM teams WHERE teamnum LIKE '%$searchq%'";
    $query = mysqli_query($con, $sql_search) or die("Could not search!");
    $count = mysqli_num_rows($query);
    if ($count == 0) {
        $output = 'No search results';

    } else {
        while ($row = mysqli_fetch_array($query)) {

            $output .= "<a href='view-team.php?id={$row['id']}'><div class='match-child'>
            <div class='flex-inside-list'>
                <div class='alliance-vs'>
                <span>" . $row["teamnum"] ."</span>
                </div>
            </div></a>";
        }
    }
}