使用 php 在文本区域中保存换行符 - Save line break in textarea with php?

如何使用 php 在文本区域中保存换行符？目前，我通过使用exec执行shell字符串来完成工作来获得此临时解决方案，但如果可能的话，我希望它全部使用php。这是我的临时脚本，请告诉我应该如何编辑它

<?php
include 'theme.php';
/* ceklogin(); */
css();
if ($_POST['wget-send']) {
    $formdir = $_POST['dir'];
    $formlink = $_POST['link'];
    $filelink = fopen('/root/wget/wget-download-link.txt', a);
    $filedir = fopen('/root/wget/wget-dir.txt', w);
    fwrite($filedir, $formdir);
    exec('echo "' . $formlink . '" >> /root/wget/wget-download-link.txt', $out);
    echo $out[2];
    exit();
}
if ($_POST['restart-download']) {
    exec('mv /root/wget/wget-download-link.txt.done /root/wget/wget-download-link.txt');
    exit();
}
echo "<form action='"" . $PHP_SELF . "'" method='"post'" id='"WgetForm'">";
echo "Download directory:<br><input type='"text'" name='"dir'" size='"15'" value='"/mnt/usb/'"/>    <br>";
echo '<br>Download link:';
echo ("<textarea name='"link'" rows='"13'" cols='"62'"></textarea><br>");
echo '<input type="submit" onclick="LinkAdded()" name="wget-send" value="Download" id="WgetID"/><br>';
echo '<input type="submit" onclick="DownloadRestarted()" name="restart-download" value="Restart latest download" id="RestartWget"/>';
echo "</form></div>";
echo <<<HTML
<script type="text/javascript">
function LinkAdded(){
        alert("Link has been sucessfully sent to wget, it'll be downloaded soon, check the wget log for the download progress");
}
function DownloadRestarted(){
        alert("Download restarted, check the wget log for the download progress");
}
</script>
 HTML;
 foot();
 echo '
 </div>
 </body>
 </div>
 </html>';
 ?>

如果我使用nl2br输出文件将是这样的

satu<br />
dua<br />
tiga<br />
empat<br />
lima

我不希望那些<br />在那里。下面是包含nl2br的脚本：

<?php
include 'theme.php';
/*ceklogin();*/
css();
if($_POST['wget-send'])
    {
        $formdir=$_POST['dir'];
        $formlink=$_POST['link'];
    $filelink = fopen('/root/wget/test.txt',a);
    $filedir = fopen('/root/wget/wget-dir.txt',w);
    $savelink = nl2br($formlink);
    fwrite($filedir, $formdir);
    fwrite($filelink, $savelink);
    }
if($_POST['restart-download'])
    {
    exec('mv /root/wget/wget-download-link.txt.done /root/wget/wget-download-link.txt');
    exit();
    }
echo "<form action='"".$PHP_SELF."'" method='"post'" id='"WgetForm'">";
echo "Download directory:<br><input type='"text'" name='"dir'" size='"15'" value='"/mnt/usb/'"/><br>";
echo '<br>Download link:';
echo ("<textarea name='"link'" rows='"13'" cols='"62'"></textarea><br>");
echo '<input type="submit" onclick="LinkAdded()" name="wget-send" value="Download" id="WgetID"/><br>';
echo '<input type="submit" onclick="DownloadRestarted()" name="restart-download" value="Restart latest download" id="RestartWget"/>';
echo "</form></div>";
echo <<<HTML
<script type="text/javascript">
function LinkAdded()
    {
            alert("Link has been sucessfully sent to wget, it'll be downloaded soon, check the wget log for the download progress");
    }
function DownloadRestarted()
    {
            alert("Download restarted, check the wget log for the download progress");
    }
</script>
HTML;
foot();
echo '
</div>
</body>
</div>
</html>';
?>

注意我希望我的文件test.txt的输出是这样的，没有<br />部分

satu
dua
tiga
empat
lima

将文本区域保存到数据库或文本文件时使用 nl2br。然后，您只需在文本区域中回显它：

<?php
// Input (can be saved in database or text file)
$toSave = nl2br($_POST["link"]);
// Output (from databse or text file)
echo "<textarea name='"link'" rows='"13'" cols='"62'">$output</textarea><br>";
?>