From: zizka at seznam dot cz
Operating system:
PHP version: 5.1.4
PHP Bug Type: Feature/Change Request
Bug description: substr() - slightly change its contract
Description:
------------
string substr ( string string, int start [, int length] )
Currently:
If string is less than *or equal* to start characters long, FALSE will be
returned.
I suggest:
If string is less than start characters long, FALSE will be returned.
The latter is more "ideologically clean". See the behavior of analogical
methods in Java, JavaScript, C, etc. E.g. I did some simple parser, where
the string of the form $<anything> is expected. I wanted to get
<anything>, so I did:
if($s !== '' && $s[0] == '$')
$s2 = substr($s, 1);
Then, behaved by Java's String.substring(), I wrote:
if($s2 === '')
// Replace $s2 with some default value;
After several minutes of searching for the bug, I noticed the fact
mentioned above.
Reproduce code:
---------------
substr("Ahoj", 4);
Expected result:
----------------
An empty string.
Actual result:
--------------
FALSE.
--
Edit bug report at http://bugs.php.net/?id=38437&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=38437&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=38437&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=38437&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=38437&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=38437&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=38437&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=38437&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=38437&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=38437&r=support
Expected behavior: http://bugs.php.net/fix.php?id=38437&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=38437&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=38437&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=38437&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38437&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=38437&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=38437&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=38437&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=38437&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=38437&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=38437&r=mysqlcfg
