On Wed, 8 Jan 2003, ELLIOTT,KATHERINE A (HP-FtCollins,ex1) wrote:
> OK, so I've gotten NO responses to my query below so I
> thought I'd ask for something slightly different and see what
> I get.
The follow-up inquery makes much more sense than the original ;)
> If I have a bunch of plain text data, how can I pull out the
> strings containing "http". I've tried several different things
> but what I end up with is more or less than what I want.
> Once I have this, I can add the URL code and replace the
> string but I haven't figured out how to do this.
Say that the paragraph you gave is a string in a variable, $TEXT ...
$allowedChars = "/:@\w.#~?%+=&!-";
preg_match_all(
"{\bhttp:[$allowedChars]+?(?=[$.:?\-]*[^$allowedChars]|$)}x",
$TEXT,
$URLS
);
foreach( $URLS[0] as $link ){
print( "<a href=\"${link}\">${link}</a>\n" );
}
That should get ya started. Read up on regular expressions, and the
regexp functions in PHP to make heads & tails out of the code, other than
"it works." (So far it works well for my intentionally limited purposes
... I wouldn't be surprised that someone finds a case where my code
breaks, or someone can/does easily extend the regexp to grok more stuff.)
http://www.oreilly.com/catalog/regex2/
http://www.php.net/manual/en/ref.pcre.php
http://www.php.net/manual/en/ref.regex.php
g.luck,
~Chris
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