Regular expressions and accented characters

[maxbld]

Hi to everybody,

I have to verify if a query result contains an intere word or a part of it, to discriminate whether or not to consider it valid. The algorithm core is represented by the following command:

preg_match_all("/([a-z]|[A-Z]|)".$topic."([a-z]|[A-Z]|)/i", $result[$j], $content1);

As you can see it verifies if there are alfabetic characters immediatly around my topic. It does its job pretty well but when $topic contains an accented character. I.e. $topic = "probléme" won't match a string within which there is probléme due to that 'é', nevertheless if it was $topic = "probleme" it would have matched probleme into a string containing it.

It really puzzles me. Does somebody have an explanation to this behavior?

Thank you in advance for any help.

Max.

 

[sleipnir214]

Assuming that you have 8-bit data (not Unicode), you might try:

[a-zA-Z\x80-\x9A\xA0-\XA5]

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[maxbld]

Oops! preg_match_all did *exactly* what it was meant to do. It was me who wasn't aware of the data that were to be matched: $result[$j] contained 'problèmes' instead of 'probléme'.

I beg your pardon for misposting... I was a little pissed off with my brain.

Max.