PHP Function to Convert LineBreaks to NewLines

 –  Comments Off on PHP Function to Convert LineBreaks to NewLines

While PHP has a very nice little function (nl2br) to convert newlines (\n) to line breaks (<br>), moving in the opposite direction is not quite so easy. This function should hopefully help to allow you to convert line breaks to new lines.

<?php

/* This function will convert line breaks or other tags passed in the $tags variable
to linebreaks.  Multiple $tags must be separated by spaces, and must consist of the
regular tag text.  Ie. $result = br2nl($text_to_filter, "br p blockquote") */
function br2nl($text, $tags = "br")
{
 $tags = explode(" ", $tags);

 foreach($tags as $tag)
 {
 $text = eregi_replace("<" . $tag . "[^>]*>", "\n", $text);
 $text = eregi_replace("</" . $tag . "[^>]*>", "\n", $text);
 }

 return($text);
}

// Usage:
 $text_to_filter = "<p>This is my <br>sample<br>text.  The default code listed here " .
"should replace the br's with new lines.</p><p>The second example is more advanced, " .
"stripping out both the BR's as well as the P tags.</p>";

 // Example of replacing BR tags (default)
 $result = br2nl($text_to_filter);
 echo "<pre>$result</pre>";

 // Example of replacing both BR and P tags
 $result = br2nl($text_to_filter, "br p");
 echo "<pre>$result</pre>";

?>

Related Reading:

Learning PHP, MySQL & JavaScript: With jQuery, CSS & HTML5 (Learning Php, Mysql, Javascript, Css & Html5)Learning PHP, MySQL & JavaScript: With jQuery, CSS & HTML5 (Learning Php, Mysql, Javascript, Css & Html5)The fully revised, updated and extended 4th edition of the hugely popular web development book - includes CSS, HTML5, jQuery and the mysqli extension.... Read More >
PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide (4th Edition)PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide (4th Edition)It hasn't taken Web developers long to discover that when it comes to creating dynamic, database-driven Web sites, MySQL and PHP provide a winning ope... Read More >
PHP for the Web: Visual QuickStart Guide (5th Edition)PHP for the Web: Visual QuickStart Guide (5th Edition)Learn PHP programming the quick and easy way!
With PHP for the Web: Visual QuickStart Guide readers can start from the beginning to get a tour... Read More >
Filed in: Code Snippets

Comments are closed.