如何用PHP替换Google drawtable中的换行符/新行

以下内容破坏了我的google.visualization.DataTable。我从谷歌日历中提取这个

// this one has a line break/enter/new line in google calendar after 5
Kanji lessons from 11 to 15 or Kanji lesson's from 1 to 5 
Beginner students dont have matome quiz. They have usual Katakana quiz from ta to po. 

但是下面的方法很好

// this does not have it.
Kanji lessons from 11 to 15 or Kanji lesson's from 1 to 5. Beginner students dont have matome quiz. They have usual Katakana quiz from ta to po. 

我尝试了以下方法。但到目前为止，他们都没有成功

$description = str_replace("  "," ",$description);

$description_arr=explode("\\n",$description);

$description = implode("<br />", $description_arr);

$description=str\u replace（“，”，$description）；
$description\u arr=分解（\\n“，$description）；
$description=内爆（“
，$description\u arr”）；

全部代码

// Load the Visualization API and the piechart package.
google.load('visualization', '1.0', {'packages':['table,corechart']});
google.setOnLoadCallback(drawTable);
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);

// start of tabel
function drawTable() {
    var data = new google.visualization.DataTable();
    //data.addColumn('string', 'Calendar Name');
    data.addColumn('string', 'Date Due');
    data.addColumn('string', 'Summary');
    data.addColumn('string', 'Date Created');
    data.addColumn('string', 'Description');
    data.addRows([
<?php
    if(count($events))
    {
        foreach($events->items as $item)
        {
            //$displayName = str_replace("'", "\'", $item->organizer->displayName);
            $summary = str_replace("'", "\'", $item->getSummary());
            $datedue = str_replace("'", "\'", $item->start->date);
            $description = str_replace("'", "\'", $item->description);
            $description = str_replace("&nbsp;&nbsp;"," ",$description);
            // $description_arr=explode("\\n",$description);
            // $description = implode("<br />", $description_arr);
            echo "['".$datedue."','".$summary . "','" . substr($item->created, 0, 10) ."','".$description."' ],\n";

            //echo "['".$displayName."','".$summary."','".$date . "','" . substr($item->created, 0, 10) ."','".$descrption."' ],\n";
        }
    }
    else
    {
        echo "Calendar is private.";
    }
?>

    ]);

    var table = new google.visualization.Table(document.getElementById('table_div'));
    table.draw(data, {showRowNumber: true, allowHtml:true});
}
// end of table

//加载可视化API和piechart包。
load（'visualization'，'1.0'，{'packages'：['table，corechart']}）；
setOnLoadCallback（drawTable）；
//将回调设置为在加载Google Visualization API时运行。
setOnLoadCallback（drawChart）；
//tabel的开始
函数drawTable（）{
var data=new google.visualization.DataTable（）；
//data.addColumn（'string'，'Calendar Name'）；
data.addColumn（'string'，'datedue'）；
data.addColumn（'string'，'Summary'）；
data.addColumn（'string'，'datecreated'）；
data.addColumn（'string'，'Description'）；
data.addRows([
我在下面添加了最后两行，现在效果很好

$summary = str_replace("'", "\'", $item->getSummary());
$date = str_replace("'", "\'", $item->start->date);
$description = str_replace("'", "\'", $item->description);
// replace line breaks with a space
$description = str_replace("\n"," ",$description);
$description = str_replace("\r"," ",$description);