Re: PCRE false match with preg_match?
| From: | Jochem Maas | Date: | Mon, 26 Sep 2005 14:44:58 +0000 |
| Subject: | Re: PCRE false match with preg_match? | ||
| References: | 1 2 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-223191@lists.php.net to get a copy of this message | ||
Jake was fast ;-) and he is on the right track too
(although I don't think that the substrings he guessed are
the exact ones that are found).
you might want to check preg_match_all to see the matches
that PCRE comes up with for each regexp...
also take a look at:
$test = "7005-N/52";
var_dump(
preg_match("/([0-9]*)\/(.*)/i", $test),
preg_match("/([0-9]*)\-(.*)/i", $test),
preg_match("/^([0-9]*)\/(.*)$/i", $test),
preg_match("/^([0-9]*)\-(.*)$/i", $test)
);
Jake Gardner wrote:
When using "/([0-9]*)(.*)/i" it matches substring 1: 7005 substring 2: -N/52 When using "/([0-9]*)\/(.*)/i" it matches substring 1: substring 2: 52 It looks to me as though its trying to match either or subgroup in order. On 9/26/05, Jens Schulze <jens@trickbetrueger.org> wrote:I recently encountered a strange behaviour, could someone please countercheck it, to either tell me there is an error in my pattern? I have a test string: "7005-N/52"I have two match patterns: a) "/([0-9]*)\/(.*)/i" b) "/([0-9]*)\-(.*)/i"I check the test string with the help of preg_match, and they both matched, but normally variant a) shouldn't have matched. Normally I test my patterns with the tool "The Regex Coach", and according to this tool it shouldn't have matched. PHP version is 5.0.4, PCRE extension version is 4.5 01-December-2003 Thanks for any help or feedback, Jens -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php