ID: 24242
Comment by: wiebe_j at hotmail dot com
Reported By: madsen at sjovedyr dot dk
Status: Bogus
Bug Type: Regexps related
Operating System: Debian Linux (Woody) Unstable
PHP Version: 4.3.2
New Comment:
For me this is still a problem. The next 16 codelines, logically all
should display a "y". But some display a "n".
(Tried the escaped versions and the hex-versions)
echo "<br><br>1.";
echo "<br>".(preg_match("/^[\[\]]+$/","[]") ? "y" : "n" );
echo "<br>".(preg_match("/^[\]\[]+$/","[]") ? "y" : "n" );
echo "<br>".(preg_match("/^[\[\]]+$/","][") ? "y" : "n" );
echo "<br>".(preg_match("/^[\]\[]+$/","][") ? "y" : "n" );
echo "<br><br>2.";
echo "<br>".(preg_match("/^[\x5B\x5D]+$/","[]") ? "y" : "n" );
echo "<br>".(preg_match("/^[\x5D\x5B]+$/","[]") ? "y" : "n" );
echo "<br>".(preg_match("/^[\x5B\x5D]+$/","][") ? "y" : "n" );
echo "<br>".(preg_match("/^[\x5D\x5B]+$/","][") ? "y" : "n" );
echo "<br><br>3.";
echo "<br>".(ereg("^[\[\]]+$","[]") ? "y" : "n" );
echo "<br>".(ereg("^[\]\[]+$","[]") ? "y" : "n" );
echo "<br>".(ereg("^[\[\]]+$","][") ? "y" : "n" );
echo "<br>".(ereg("^[\]\[]+$","][") ? "y" : "n" );
echo "<br><br>4.";
echo "<br>".(ereg("^[\x5B\x5D]+$","[]") ? "y" : "n" );
echo "<br>".(ereg("^[\x5D\x5B]+$","[]") ? "y" : "n" );
echo "<br>".(ereg("^[\x5B\x5D]+$","][") ? "y" : "n" );
echo "<br>".(ereg("^[\x5D\x5B]+$","][") ? "y" : "n" );
Previous Comments:
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[2003-06-18 06:08:28] madsen at sjovedyr dot dk
Found the solution...
Appearantly '[' and ']' doesn't need to be escaped (inconsistency?),
but they have to be the first characters in the list of matches....
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[2003-06-18 06:05:43] madsen at sjovedyr dot dk
Description:
------------
Attempting to use ereg() for matching the date from an Apache error_log
fails, when using the pattern:
"^\[([^\]]*)\]"
Intention of the pattern explained (in case I just can't see the error
in it):
^\[ - Require first char in string to be a litteral '['.
([^\]]*) - Match any number of chars that is NOT ']'.
\] - Match a litteral ']'
When using this pattern in ereg(), like: ereg("^\[([^\]]*)\]", $string,
$regs);
$regs has returned empty, when printed by a print_r();
But then if I use "^\[(.*)\]" as my pattern, I get something in $regs,
not the right match, since it then runs in 'greedy mode', and catches
what's between *(* and *)*:
[*(*Aug 25 2002 14:53:32] [error] [client: 88.99.111.222*)*] ...
It's really confusing me...
If this is not a bug I apologise, but I think I have taken every form
of action required before reporting this as a bug.
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Edit this bug report at http://bugs.php.net/?id=24242&edit=1
