在EasyNote网站上,我遇到了换行问题。
在正文 onload 上,我设置了一个计时器,每 3 秒自动上传一次笔记,如下所示:
<body onload="setInterval(uploadNote,3000);current = 1;">
uploadNote 的代码是:
function uploadNote() {
var note = current+document.getElementById(\'note\').value; //current is the number of the note selected\' because echoed
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function()
{
if (xmlhttp.readyState == 4 && xmlhttp.status == 200){}
}
xmlhttp.open("GET","uploadnote.php?q="+note,true);
xmlhttp.send();
}
然后是这个 php 代码:
$note = $_GET["q"]; //contains both notenumber as first digit and note
echo($note."\n"); //for debugging reasons
$notenumber = substr($note, 0, 1);
$notecontent = substr($note, 1, strlen($note));
$notecontent = str_replace("'","''",$notecontent);
$notecontent = nl2br($notecontent);
echo($notecontent); //for debugging reasons
$request = 'UPDATE notes SET note'.$notenumber.' = "'.$notecontent.'" WHERE mail LIKE "'.$email.'"';
$result = mysql_query($request);
现在,问题是,textarea 中的换行符被完全删除了,所以 php-snippet 的结果是没有换行符的文本的两倍,也在数据库中。但是,当我将它们直接插入数据库时,在文本区域中显示换行符没有问题。
帮助将不胜感激。
编辑:更新 uploadNote() 功能:
function uploadNote() {
var note = current+document.getElementById(\'note\').value;
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function()
{
if (xmlhttp.readyState == 4 && xmlhttp.status == 200){}
}
xmlhttp.open("POST","uploadnote.php",true);
xmlhttp.send("note="+note);
}
和 php:
$note = $_POST["note"];
echo($note."\n");
$notenumber = substr($note, 0, 1);
$notecontent = substr($note, 1, strlen($note));
$notecontent = mysql_real_escape_string($notecontent);
echo($notecontent);
$request = 'UPDATE notes SET note'.$notenumber.' = "'.$notecontent.'" WHERE mail LIKE "'.$email.'"';
$result = mysql_query($request);
现在的问题是没有任何效果。该注释不会在 MySQL 数据库中更新。