Selecting Data from Database to php html

Question

1. How can I select a specific text element from database without putting ID. I have different paragraphs on my HTML and wanna select them from database
   How can I select a specific text element from database without putting ID. I have different paragraphs on my HTML and wanna select them from database

**

function connect() {
    $con=`mysqli`_connect("127.0.0.1","Egli", "","Egli");
    // Check connection
    if (mysqli_connect_errno()) {
        echo "Failed to connect to MySQL: " . mysqli_connect_error();
    } else {
        return $con;
    }
}


function renderContent($con) {
    $sql = "SELECT Text_Description FROM TextSlide_Table WHERE ID=1";
    $result = $con->query($sql);

    if ($con && ($result->num_rows > 0)) 
    {
        // output data of each row
        while($row = $result->fetch_assoc()) 
        {
            echo $row["Text_Description"];
        }
    } else {
         echo "error";
    }
}

function renderContent2($con) {
    $sql = "SELECT Text_Description FROM TextSlide_Table WHERE ID=2";
    $result = $con->query($sql);

    if ($con && ($result->num_rows > 0)) 
    {
        // output data of each row
        while($row = $result->fetch_assoc()) 
        {
            echo $row["Text_Description"];
        }
    } else {
         echo "error";
    }
}