Question

preg_replace() and strange characters, how to do?

Asked by: fletchsod

How do I get this preg_replace() to work? Is there a tutorial or reference of how do we know we need to use those strange characters? php.net doesn't provide this type of tutorial for strange characters as far as I can find.

--snip--
    $patterns[0] = "|\[b\](.*?)\[/b\]|s";
    $patterns[1] = "|\[i\](.*?)\[/i\]|s";
    $patterns[2] = "|\[u\](.*?)\[/u\]|s";

    $replacements[0] = "<b>\$1</b>";
    $replacements[1] = "<i>\$1</i>";
    $replacements[2] = "<u>\$1</u>";

    ksort($patterns);
    ksort($replacements);

    $RawData = "kkkkert [B]sdf[/B] shuuuooo";
    $ConvertedData = preg_replace("|\[b\](.*?)\[/b\]|s", "<b>\$1</b>", $RawData);

    echo $ConvertedData;
--snip--

Thanks...

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Asked On
2005-10-12 at 09:53:50ID21592650
Topic

PHP Scripting Language

Participating Experts
2
Points
150
Comments
5

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    Answers

     

    by: mensuckPosted on 2005-10-12 at 10:49:43ID: 15071114

    Something like this....

    <?

    $old = array ( '#\\[b\\](.*)\\[/b\\]#siU', '#\\[i\\](.*)\\[/i\\]#siU', '#\\[u\\](.*)\\[/u\\]#siU' );
    $new = array ( '<b>\\1</b>', '<i>\\1</>', '<u>\\1</u>' );

    $RawData = "kkkkert [B]sdf[/B] shuuuooo kkkkert [u]sdf[/U] shuuuooo kkkkert [i]sdf[/I] shuuuooo

    kkkkert [B]sdf[/B] shuuuooo kkkkert [u]sdf[/U] shuuuooo kkkkert [i]sdf[/I] shuuuooo";

    $ConvertedData = preg_replace ( $old, $new, $RawData );

    echo $ConvertedData;

    ?>


    ms!

     

    by: mgh_mgharishPosted on 2005-10-12 at 11:28:28ID: 15071443

    Hi fletchsod,
        Here is a very good tutorial:

    http://www.regular-expressions.info/

    ---
    Harish

     

    by: fletchsodPosted on 2005-10-12 at 11:45:14ID: 15071612

    Well, I prefer the simplier syntax...  :-)   I just got it!!  Didn't know this whole things is called "Regular Expression", so found the documentation at http://us2.php.net/manual/en/ref.pcre.php .

    Turned out my problem had to do with the case sensitivity.  I used a lowercase "b" instead of an uppercase "B".  Sigh!!!  I learned about that from http://us2.php.net/manual/en/reference.pcre.pattern.modifiers.php ..  Sigh!!! But I'm still learning on how does the regular expression work. To make it not case sensitive I would need to add a "U" to the syntax..

    Code:

    |\[b\](.*?)\[/b\]|sU



    and to make it less greedy, I would take out the "?" and add the "i' to it. This accomplish the same thing, I think...

    Code:

    |\[b\](.*)\[/b\]|siU


    But I'll leave out the "U" part to make this case sensitivity part stick for now...  Sorry to bother, now that I have the reference and examples from http://weblogtoolscollection.com/regex/regex.php .   I think I can learn this on my own for a while but not the very deepest part.   :-)

    Thanks...

     

    by: fletchsodPosted on 2005-10-12 at 11:47:14ID: 15071628

    Sorry, don't know how to split the point between 2 people....

     

    by: mgh_mgharishPosted on 2005-10-12 at 11:52:24ID: 15071668

    fletchsod, if you want to split points, you can click "Split" link at the top of the text area where you write the comment.

    If you want to split the points, post a 0 point question to reopen the question in the community support area and ask the moderators to reopen the question..

    http://www.experts-exchange.com/Community_Support/askQuestion.jsp

    20120131-EE-VQP-002

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