note 89320 deleted from function.nl2br by googleguy
| From: | googleguy@php.net | Date: | Thu, 13 Jun 2013 11:11:02 +0000 |
| Subject: | note 89320 deleted from function.nl2br by googleguy | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-195182@lists.php.net to get a copy of this message | ||
Note Submitter: sean at boyercentral dot net
----
Ever had a problem with using nl2br() for something like a blog post which contains anything inside
of a <pre> tag? It will give you double spaces. Ugly for posting code examples. Here's my
solution.
If it doesn't detect a <pre> tag inside of the $string you pass in, it uses regular
ol' nl2br(). Otherwise, it explodes the string by \n, and only adds <br /> to lines that
are NOT inside the <pre> tag!
This function completely avoids using RegEx and stacks. Simple, and fairly fast.
<?php
// do nl2br except when in a pre tag
function nl2brPre($string)
{
// First, check for <pre> tag
if(!strpos($string, "<pre>"))
{
return nl2br($string);
}
// If there is a <pre>, we have to split by line
// and manually replace the linebreaks with <br />
$strArr=explode("\n", $string);
$output="";
$preFound=false;
// Loop over each line
foreach($strArr as $line)
{ // See if the line has a <pre>. If it does, set $preFound to true
if(strpos($line, "<pre>"))
{
$preFound=true;
}
elseif(strpos($line, "</pre>"))
{
$preFound=false;
}
// If we are in a pre tag, just give a \n, else a <br />
if($preFound)
{
$output .= $line . "\n";
}
else
{
$output .= $line . "<br />";
}
}
return $output;
}
?>
Hope this comes in handy!