PHP - Problema al insertar campo con contenido html en sql server - Problem in executing query

INSERT INTO avisos(id, title, summary, text) VALUES ('37', 'dsfsdfsd', '

sfsdfsdf

', '

sdfsdfsdfsd

')Problem in executing query

<?php

    $title = $_POST['title'];

    $summary = $_POST['summary'];

    $text = $_POST['text'];

    $summary = addslashes($_POST['summary']);

    $text = addslashes($_POST['text']);

    $strSQL = "SELECT (MAX(id) + 1) as id FROM avisos";

    $query = sqlsrv_query($conn, $strSQL) or die ("Problem in executing query");

    $result = sqlsrv_fetch_array($query);

    $id= $result['id'];

    $strSQL = "INSERT INTO avisos(id, title, summary, text) VALUES ('$id', '$title', '$summary', '$text')";

    echo $strSQL;

    //echo $summary;

    //echo $text;

    $objQuery  = sqlsrv_query($conn, $strSQL) or die ("Problem in executing query");

    if ($objQuery){

        $success_msg = '<font color="#009900">Tus datos han sido guardados.</font>';

    } else {

        $error_msg = '<font color="#FF0000">ERROR: Problems connecting to server, please try again later.</font>';

    }

    header("Location:notas_config.php");

?>