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View Full Version : URL parsed from Text into HREF?



the-dream
08-14-2008, 12:37 PM
Hi,

I have some text that is being grabbed from a database and i want to parse out all the urls from being like:

This is my site www.example.com its cool!

to...

This is my site <a href="http://www.example.com/">www.example.com</a> its cool!

Does anyone know of any classes or premade scripts that will do this, I really don't want to write it myself!

Thanks,
~ Christian

mlseim
08-14-2008, 02:46 PM
Below is a function from phpbb.com ...

I put in a string with 3 different kinds of links to test it.



<?php

// Here is the test string with three types of links ...

$string = "
Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam
nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam
erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci
tation ullamcorper suscipit www.google.com ut aliquip ex ea commodo
Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse
molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero
eros et accumsan et iusto odio dignissim qui blandit praesent luptatum
zzril delenit augue duis dolore te feugait nulla facilisi.
<br /><br />
Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet
doming id quod mazim placerat facer possim assum. Email me: john@aol.com
<br /><br />
Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam
nonummy nibh euismod http://www.yahoo.com ut laoreet dolore magna aliquam erat
volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullam
corper suscipit lobortis nisl ut aliquip ex ea commodo consequat.
<br /><br />
";

echo clickable_link($string);


function clickable_link($text)
{
# this functions deserves credit to the fine folks at phpbb.com

$text = preg_replace('#(script|about|applet|activex|chrome):#is', "\\1:", $text);

// pad it with a space so we can match things at the start of the 1st line.
$ret = ' ' . $text;

// matches an "xxxx://yyyy" URL at the start of a line, or after a space.
// xxxx can only be alpha characters.
// yyyy is anything up to the first space, newline, comma, double quote or <
$ret = preg_replace("#(^|[\n ])([\w]+?://[\w\#$&#37;&~/.\-;:=,?@\[\]+]*)#is", "\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $ret);

// matches a "www|ftp.xxxx.yyyy[/zzzz]" kinda lazy URL thing
// Must contain at least 2 dots. xxxx contains either alphanum, or "-"
// zzzz is optional.. will contain everything up to the first space, newline,
// comma, double quote or <.
$ret = preg_replace("#(^|[\n ])((www|ftp)\.[\w\#$%&~/.\-;:=,?@\[\]+]*)#is", "\\1<a href=\"http://\\2\" target=\"_blank\">\\2</a>", $ret);

// matches an email@domain type address at the start of a line, or after a space.
// Note: Only the followed chars are valid; alphanums, "-", "_" and or ".".
$ret = preg_replace("#(^|[\n ])([a-z0-9&\-_.]+?)@([\w\-]+\.([\w\-\.]+\.)*[\w]+)#i", "\\1<a href=\"mailto:\\2@\\3\">\\2@\\3</a>", $ret);

// Remove our padding..
$ret = substr($ret, 1);
return $ret;
}

?>

the-dream
08-14-2008, 03:36 PM
That is really GREAT! Thank you so much! Did you write it yourself?

mlseim
08-14-2008, 07:37 PM
No,

I found it on the internet, and within the function is this line ...
# this functions deserves credit to the fine folks at phpbb.com

But I also have a use for it, so I remembered that I had it on my PC.



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