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Request #41269 ctype_digit returns 1 for an empty string
Submitted: 2007-05-03 16:24 UTC Modified: 2007-05-11 01:00 UTC
Votes:1
Avg. Score:1.0 ± 0.0
Reproduced:0 of 1 (0.0%)
From: sedat dot capar at isbank dot net dot tr Assigned:
Status: No Feedback Package: Feature/Change Request
PHP Version: 5.2.2 OS: win2003
Private report: No CVE-ID: None
View Developer Edit
 [2007-05-03 16:24 UTC] sedat dot capar at isbank dot net dot tr 
Description:
------------
ctype_digit returns 1 (TRUE) for an empty string (I do not mean a blank character) however it must return false (NULL) because empty string means there is no digit. 

Reproduce code:
---------------
$number="";
print ctype_digit($number)."*";
$number=" ";
print ctype_digit($number)."*";
$number="1";
print ctype_digit($number);

Expected result:
----------------
**1

Actual result:
--------------
1**1

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 [2007-05-03 16:39 UTC] tony2001@php.net 
What are you talking about?

# php -r 'var_dump(ctype_digit(""));'
bool(false)
# php -r 'var_dump(ctype_digit(" "));'
bool(false)
# php -r 'var_dump(ctype_digit("1"));'
bool(true)
 [2007-05-03 19:05 UTC] sedat dot capar at isbank dot net dot tr 
Hello, 
you must try your code under windows to understand what I mean
here is the results of your codes when I run them under windows


C:\php5>php -r var_dump(ctype_digit('23423'));
bool(true)

C:\php5>php -r var_dump(ctype_digit(''));
bool(true)

C:\php5>php -r var_dump(ctype_digit('sdf345'));
bool(false)

As you see in second one it returned true, however it must return false.
 [2007-05-03 19:46 UTC] tony2001@php.net 
What PHP version are you using?
(Somehow I doubt it's really 5.2.2).
 [2007-05-11 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 
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