On 18.06.09 19:14, MySQL Student wrote: > Hi Dan, I'm not Dan. This is a mailing list. Meny people read it and many can respond your mail.
> > Do I need the backslashes to escape the spaces? > > > > no, although \s would be fine. > Okay, so either \s or nothing at all works just the same? the \s works like whitespace character - space, tab. replacing spaces for \s is OK, unless you want tabs not to match. > > this can be much more effectively written as: > > /.spam\ssample./i > > > That will match the words "spam sample" in the subject as long as there > > is at least 1 character before and one after. > > But you had previously written that /Spam Sample/ will also match that text > anywhere on the line. Is that not the case? /spam sample/ will match the test anywhere on line. /.spam sample./ will match the text anywhere on line, except the begin and the end, since it must be preceded by at least one character. /(.+)spam sample(.+)/ will match exactly the same, but the match will be slower since the (.+) will need to compare all text before/after the "spam sample" and store them both to capture buffers. -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Quantum mechanics: The dreams stuff is made of.
