From: [EMAIL PROTECTED]
Operating system: freebsd 4.7 stable
PHP version: 4.2.2
PHP Bug Type: PCRE related
Bug description: preg_match backreference fails
Perhaps I am misunderstanding something about the differences between perl
regex and php perl regex, but this looks like a bug to me. The back
references are behaving strangely.. I think the following code
demonstrates it fairly well. Removing the back reference from the
preg_match code results in a successful match as expected.
The following code fails in php 4.2.2:
$string = "blah/blah/other/stuff/here.html";
if (preg_match("/^\/?([^\/]+\/)(\1)/",$string,$matches) )
{ print "found match: $matches[1] <BR>\n";
}
else
{ print "failed to match.. <BR>\n";
}
in perl 5.x, it works fine:
my $string = "blah/blah/other/stuff/here.html";
if ($string =~ /^\/?([^\/]+\/)(\1)/)
{ print "found match: $1 <BR>\n";
}
else
{ print "failed to match.. <BR>\n";
}
configure command:
'./configure' '--with-apxs=/usr/local/sbin/apxs'
'--with-config-file-path=/usr/local/etc' '--enable-versioning'
'--with-regex=system' '--without-gd' '--without-mysql'
'--with-gd=/usr/local' '--enable-gd-native-ttf'
'--with-freetype-dir=/usr/local' '--with-jpeg-dir=/usr/local'
'--with-png-dir=/usr/local' '--with-zlib' '--with-bz2=/usr'
'--with-mcrypt=/usr/local' '--with-mhash=/usr/local'
'--with-mysql=/usr/local' '--with-openssl=/usr'
'--with-expat-dir=/usr/local' '--with-xmlrpc' '--enable-xslt'
'--with-xslt-sablot' '--enable-ftp' '--with-curl=/usr/local'
'--with-gettext=/usr/local' '--with-iconv=/usr/local' '--enable-trans-sid'
'--prefix=/usr/local' 'i386-portbld-freebsd4.6'
Thanks for looking at this,
earth
[EMAIL PROTECTED]
--
Edit bug report at http://bugs.php.net/?id=20856&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=20856&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=20856&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=20856&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=20856&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=20856&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=20856&r=support
Expected behavior: http://bugs.php.net/fix.php?id=20856&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=20856&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=20856&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=20856&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=20856&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=20856&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=20856&r=isapi
