php html remove line break from meta description tag

I am printing page content from a MYSQL db in PHP. I have a text field in db called $row['description']

When storing users input into db I only use mysql_real_escape_string() so I do not edit html

Problem is I use this field from db as the html pages meta description tag. So if user inserted line breaks in description they cause a line break in the source code of the page within the meta description tag开发者_C百科. I tried to remove the line break by using a loop to skip an br formats. I use the nl2br to convert to br.

$desc_array=(explode(" ", $row['description']));
for($i=0; $i < 17;$i++){
    if(nl2br($desc_array[$i])=="<br />" || nl2br($desc_array[$i])=="<br/>"){
        $i++;
    } 

I checked my SQL file and the line breaks appear as

\r\n\r\n

I have tried to check for this format too like

 $desc_array[$i])=="\r\n\r\n"
 $desc_array[$i])=="\r\n"
 $desc_array[$i])=="\n"
 $desc_array[$i])=="\r"

but still line break gets printed in description tag. Any ideas?

$string = str_replace(array("\r", "\n"), array('', ''), $string);

I will tell you my opinion as I encountered this sitioation over and over.

Sometimes trimming out \r\n, \n helps, sometimes not. In few cases i found out that i have to remove like so:

<?php
$desc = "This
is a description";
// this is just a line break [enter]
$newDesc = str_replace(" 
", " ", $desc); // witch outputs This is a description
?>

I never had the curiosity to find out why it doesn't want \r\n or \n, maybe i'll foind out now :)