[RESOLVED] Regex question

lpa

I need to convert @mentions (nicknames) into clickable links: @mentions

This works fine:

preg_match_all("/\B@([a-zA-Z0-9-.]+(?!\/))\b/i", $text1, $matchesx);

but there is 1 problem. As you see, nicknames may contain only letters a-zA-Z, numbers 0-9, dots and -

This regex converts to links all words (first parts of words) that start with @ and letters or numbers even if the rest of the word contains other characters. For example:

@mentionsúñíá

must stay untauched because it contains characters úñíá

but this script converts it to:

@mentionsúñíá

Word bondary for some reason does not work. Can somebody help me to fix this problem?

dalecosp

Works Just Fine(TM) Here:

<?php

$text1 = "@mentionsúñíá";

preg_match_all("/\B@([a-zA-Z0-9-.]+(?!\/))\b/i", $text1, $matchesx);


print_r($matchesx);
Array
(
    [0] => Array
        (
            [0] => @mentions
        )

[1] => Array
    (
        [0] => mentions
    )

)

Bonesnap

dalecosp;11052717 wrote:
Works Just Fine(TM) Here:

I think what OP is asking for is for the regex to ignore the nickname entirely if there are special characters in it.

Derokorian

Actually I think he WANTS it to match the nickname, even when said nickname has special characters. To that end, what about:

preg_match_all("/@(mentions.+)\b/i", $text1, $matchesx);

Which should match from @mentions followed by any character until the first word boundary?

NogDog

Yeah, we might need some clarification, but the look-ahead assertion (FONT=Courier New[/FONT]) would match any character that is not a "/" -- including those accented letters. Without a bit of clarification on the actual requirement, though, I'm hesitant to recommend an alternative.

lpa

I want a regex that ignores the nickname entirely if there are special characters in it.

lpa

anyone?

laserlight

This works for me:

<?php
$text1 = "@mentionsúñíá @mentionsgood";
preg_match_all("/\B@([a-zA-Z0-9-.]+(?!\/))\b/ui", $text1, $matchesx);
print_r($matchesx);

Gives:

Array ( [0] => Array ( [0] => @mentionsgood ) [1] => Array ( [0] => mentionsgood ) )

whereas the original gives:

Array ( [0] => Array ( [0] => @mentions [1] => @mentionsgood ) [1] => Array ( [0] => mentions [1] => mentionsgood ) )

I surmised that the reason why "word bondary (...) does not work" is that those characters were not being recognised as "word" characters. I guessed adding the modifier for UTF-8 would change that, and apparently it did.

lpa

thanks.