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我遇到了一个<br>在文本区域的文本末尾插入 a 的表单，它会在每次提交时插入一个新的中断。当我再次进入编辑器时，这些中断将是可见的。我插入了以下代码，它似乎可以工作，<br>s 不再相乘或出现在编辑器中。

 $x = preg_replace("/^<br(\/|)>/i","\n",$x);
 $x = preg_replace("/(^)?(<br\s*\/?>\s*)+$/","\n", $x);

但是，现在它<br>在将文本放入 SQL 时会在文本末尾输入两个标签。

我之前关于这个的帖子是这里。

编辑以包含表单信息的代码

<?php

include ("main_fns.php"); // This file would include your database access and login     functions, include this at the top of EVERY page, in order to carry the session     between pages and access the database.
open_db(); // Open a database connection

$page_file = "sample.php"; // the file name of this page
$page_title = "Course Admin Area"; // can be fed into the header

include ("header.php");

// Check for logged in session variable, else prompt for login.
if (!@$_SESSION["email"]) {
loginPrompt(@$_POST["email"],$_SESSION["error"]);
} else {

// PAGE CONTENT GOES HERE

function fromhtml ($x) {
$x = preg_replace("/<p>/i","\n\n",$x);
$x = preg_replace("/^<br(\/|)>/i","\n",$x);
$x = preg_replace("/<li>/i","\n<li>",$x);
$x= preg_replace("/(^)?(<br\s*\/?>\s*)+$/","\n", $x); 
return $x;
}




$DBhost = "localhost";
$DBuser = "daccweb";
$DBpass = "go";
$DBName = "DACC";
mssql_connect($DBhost,$DBuser,$DBpass) or die("Unable to connect to database");
@mssql_select_db("$DBName") or die("Unable to select database $DBName");


$PHP_SELF = $_SERVER['PHP_SELF'];


$course_id = @$_GET["course"];

if ($course_id == "") {
//$sqlquery = "SELECT id,title,goals,outline,reference,DATE_FORMAT(updated, '%Y/%m/%d %H:%i:%S') as         updated2 FROM courses WHERE division_id = '$division_id' ORDER BY id";
$sqlquery = "SELECT id, title, goals, outline, reference, deliverymode, updated2 = CONVERT(VARCHAR(19),     updated, 120)
FROM courses WHERE division_id = '$division_id' ORDER by id";


$result = mssql_query($sqlquery);
$number = mssql_num_rows($result);

if ($number == 0) {
        print "<html><body>";
        print "No courses exist for division $division_id.";
        print "</body></html>";
    exit;
}

print "<b>Course list - division $division_id</b><p>\n";
print "Select a course ID to edit course information.<p>\n";
print "<table border=1 id=\"content_table\"><tr><th>ID</th><th>Title</th><th>Status</th><th>Last modified</th></tr>\n";

$i = 0;
while ($number > $i) {

        $course_id =  mssql_result($result,$i,"id");
    $reference = mssql_result($result,$i,"reference");
    $updated = mssql_result($result,$i,"updated2");

    print "<tr><td>";
    if ($reference == "") {
            print "<a href=$PHP_SELF?division=$division_id&course=$course_id>$course_id</a>";
    } else {
            print "$course_id";
    }
    print "</td><td>";
        print mssql_result($result,$i,"title");
    print "</td><td>";
    if ($reference == "") {
        if ( (mssql_result($result,$i,"goals")=="") and (mssql_result($result,$i,"outline")=="")     ) {
            print "<b>No syllabus, or incomplete</b></td>";
        }
    } else {
        print "Based on $reference";
    }
    print "</td><td>$updated</td>\n";
        print "</tr>\n";  
        $i++;
}

print "</table>";

    exit;
}

$sqlquery = "SELECT * FROM courses WHERE id = '$course_id'";

$result = mssql_query($sqlquery);
$number = mssql_num_rows($result);

if ($number == 0) {
print "<html><body>";
print "No course with the ID \"$course_id\" exists in the course database.";
print "</body></html>";
exit;
}

$i = 0;
$title = fromhtml(mssql_result($result,$i,"title"));
$iai = fromhtml(mssql_result($result,$i,"iai"));
$deliverymode = fromhtml(mssql_result($result,$i,"deliverymode"));
$hours = fromhtml(mssql_result($result,$i,"hours"));
$type = fromhtml(mssql_result($result,$i,"type"));
$description = fromhtml(mssql_result($result,$i,"description"));
$semester = fromhtml(mssql_result($result,$i,"semester"));
$prerequisites =fromhtml(mssql_result($result,$i,"prerequisites"));
$notes = fromhtml(mssql_result($result,$i,"notes"));
$goals = fromhtml(mssql_result($result,$i,"goals"));
$outline = fromhtml(mssql_result($result,$i,"outline"));
$materials = fromhtml(mssql_result($result,$i,"materials"));
$evaluation = fromhtml(mssql_result($result,$i,"evaluation"));
$bibliography = fromhtml(mssql_result($result,$i,"bibliography"));
$revised = mssql_result($result,$i,"revised");

print "<html><head><title>DACC Course Syllabus - $course_id</title>";

print "<script language=\"JavaScript\" type=\"text/javascript\" src=\"/rte/richtext2.js\"></script>";
?>

<script language="JavaScript" type="text/javascript">
<!--    
initRTE("/rte/images/", "/rte/", "");
//-->   

function submitForm() {
   updateRTEs();
   document.edit-course.submit();
   return false;
}

</script>

<?php   

print "</head><body>\n";

print "<a href=/courses/$division_id>Back to the $division_id course list</a>";
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