New Webmaster Tool – The Regular Expression Editor

WarkenSoft Productions is proud to announce the development of a new tool for use on our site. The Regular Expression editor will allow you to test and edit any regular expressions that you have been struggling with to develop. Made available for free to our visitors, we hope you enjoy the tool and find it to be useful.

If you have any suggestions for improvements or comments about it, feel free to leave them in the comments area below. Also, we’re always on the look out for good regular expressions, so if you feel that you have one or a few that might be useful to the other visitors to this site, feel free to mention them in the comments.

Related Reading:

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 >
Modern PHP: New Features and Good PracticesModern PHP: New Features and Good Practices

PHP is experiencing a renaissance, though it may be difficult to tell with all of the outdated PHP tutorials online. With this practical guide, you... Read More >

Head First PHP & MySQL: A Brain-Friendly GuideHead First PHP & MySQL: A Brain-Friendly Guide

If you're ready to create web pages more complex than those you can build with HTML and CSS, Head First PHP & MySQL is the ultimate learning guide ... Read More >

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:

Modern PHP: New Features and Good PracticesModern PHP: New Features and Good Practices

PHP is experiencing a renaissance, though it may be difficult to tell with all of the outdated PHP tutorials online. With this practical guide, you... Read More >

Murach's PHP and MySQL (3rd Edition)Murach's PHP and MySQL (3rd Edition)

“I can’t count how many PHP books I have purchased over the years trying to learn the language. Murach’s was the first book that helped me gr... Read More >

The Joy of PHP: A Beginner's Guide to Programming Interactive Web Applications with PHP and mySQLThe Joy of PHP: A Beginner's Guide to Programming Interactive Web Applications with PHP and mySQLThird Edition now with bonus chapters. Have you ever wanted to design your own website or browser application but thought it would be too difficult or... Read More >