vs2017改变线条的边缘颜色？

Question

VS2015有改变线条的边距颜色，但在VS2017中它在哪里？我真的很喜欢这个功能。

VS2015配色方案：

<?php
    include('session.php');
?>

<?php
    $conn = new mysqli("127.0.0.1","root","","foo");
    if ($conn->connect_errno) {
       echo "Failed to connect to MySQL: (" . $conn->connect_errno . ") " .           $conn->connect_error;
    }
    $sew = $_SESSION['login_user'];
    $a = $_GET["en"];
    $l = 1;
    $d = -1;

    if($a == 1)
    {
    $sqlw = " INSERT into dlkeuser VALUES('$a','$sew')";

        if ($conn->query($sqlw) === FALSE) 
        {
            echo "you have already disliked the song";
        }
        else
        {
        //query1
            $sql  = " DELETE FROM lkeuser WHERE userid = '$sew' AND songid = '$a' " ;

        //query2
            $sql1 = "UPDATE liking
            SET count = count - 1 ";

            if ($conn->query($sql) === TRUE) {
                echo "deleted the song";
            }

            if ($conn->query($sql1) === TRUE) {
                echo "you disliked the song";
            } 
            else {
                echo "Error: " . $sql . "<br>" . $conn->error;
            }
        }

Answer 1

它位于（有点违反直觉）每种语言的文本编辑器选项中。虽然这允许不同语言的不同选项。 Text Editor >> C/C++ >> Scroll Bars