From: gmarik at gmail dot com
Operating system: win xp
PHP version: 5.1.2
PHP Bug Type: *Regular Expressions
Bug description: preg_match_all(): Compilation failed
Description:
------------
Fails to compile pattern.
Workaround:
put laziness switch `?` right after `+` quantifier:
...
+? # 1 or more times as short as possible(lazy matching)
...
Reproduce code:
---------------
//fetch image URLs
$pattern = '~
< # open tag
img # name
\s # whitespace
+ # 1 or more times
src= # image source attribute equals
" # open quote
( # begin group capture
[^"] # URL: everything up to quote
+ # 1 or more times
? # as short as possible(lazy matching)
) # end group capture
" # close quote
[^>] # any except >
* # 0 or more times
> # close tag
~xi'; //omit whitespaces, case insensitive
preg_match_all($pattern, '<img src="test"/>', $matches);
echo $matches[1];
Expected result:
----------------
test
Actual result:
--------------
PHP Warning: preg_match_all(): Compilation failed: nothing to repeat at
offset [...stripped]
--
Edit bug report at http://bugs.php.net/?id=36765&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36765&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36765&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36765&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36765&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36765&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36765&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36765&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36765&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36765&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36765&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36765&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36765&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36765&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36765&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36765&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36765&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36765&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36765&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36765&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36765&r=mysqlcfg
