Hi Berber,
you generally need to do some string replacements on the text you're using
to put through the match before you actually do the match (and same for
replacements). Just have a look at the pattern syntax in the manual for the
characters you need to do the replacement on... e.g
$string = "Will this work?";
$criteria = "work?";
$criteria = str_replace("?", "\?", $criteria);
if (preg_match("/" . $criteria . /is", $string))
{
echo "Bingo.";
}
I usually make a function that will replace all the special characters. The
only one that stands out against the rest is the $, because escaped once in
a pcre function means that it is a variable - you need to escape it twice.
Here's some of what I tend to use (cut out a function - the rest of the
function won't mean much to you ;)):
// Clear up the special characters in the $criteria.
$criteria = str_replace("^", "\^", $criteria);
$criteria = str_replace("[", "\[", $criteria);
$criteria = str_replace("]", "\]", $criteria);
$criteria = str_replace("*", "\*", $criteria);
$criteria = str_replace("+", "\+", $criteria);
$criteria = str_replace("{", "\}", $criteria);
$criteria = str_replace("}", "\}", $criteria);
$criteria = str_replace("?", "\?", $criteria);
$criteria = str_replace("|", "\|", $criteria);
// The $ is a little tricky, since it is used for end of string / line,
// and for use with variables when escaped. It therefore needs two
// backslashes.
$criteria = str_replace("$", "\\$", $criteria);
// We're using ! as a delimiter, so that must be replaced, too.
$criteria = str_replace("!", "\!", $criteria);
There's probably bits missing from that, since that's from a script in
development, but you get the idea.
Hope it's of some help,
James
"Boaz Yahav" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
When i try to use preg_match on strings that have "?" inside them it
seems to not work.
Any ideas how to bypass this?
thanks
berber
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