From php-doc-bugs  Tue Sep 20 15:59:24 2011
From: "birke at d-scribe dot de"<php-bugs () lists ! php ! net>
Date: Tue, 20 Sep 2011 15:59:24 +0000
To: php-doc-bugs
Subject: [DOC-BUGS] [PHP-BUG] Doc #55742 [NEW]: Description of what happens if you pass a number
Message-Id: <bug-55742 () bugs ! php ! net>
X-MARC-Message: https://marc.info/?l=php-doc-bugs&m=131653439713508

From:             
Operating system: 
PHP version:      5.3.8
Package:          Documentation problem
Bug Type:         Documentation Problem
Bug description:Description of what happens if you pass a number

Description:
------------
---
From manual page: http://www.php.net/function.ctype-alnum
---
There should be the following warning in the docs:

If you are passing in a number, ctype_alnum will return false for all
numbers that do not represent alphanumeric character codes (see chr). 

Test script:
---------------
<?php
$myVar = 10;
echo ctype_alnum($myVar) ? "T" : "F"; // returns F
$myVar = 48;
echo ctype_alnum($myVar) ? "T" : "F"; // returns T, because ASCII 48 = "a"
$myVar = "10";
echo ctype_alnum($myVar) ? "T" : "F"; // returns T




-- 
Edit bug report at https://bugs.php.net/bug.php?id=55742&edit=1
-- 
Try a snapshot (PHP 5.4):            https://bugs.php.net/fix.php?id=55742&r=trysnapshot54
Try a snapshot (PHP 5.3):            https://bugs.php.net/fix.php?id=55742&r=trysnapshot53
Try a snapshot (trunk):              https://bugs.php.net/fix.php?id=55742&r=trysnapshottrunk
Fixed in SVN:                        https://bugs.php.net/fix.php?id=55742&r=fixed
Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=55742&r=needdocs
Fixed in release:                    https://bugs.php.net/fix.php?id=55742&r=alreadyfixed
Need backtrace:                      https://bugs.php.net/fix.php?id=55742&r=needtrace
Need Reproduce Script:               https://bugs.php.net/fix.php?id=55742&r=needscript
Try newer version:                   https://bugs.php.net/fix.php?id=55742&r=oldversion
Not developer issue:                 https://bugs.php.net/fix.php?id=55742&r=support
Expected behavior:                   https://bugs.php.net/fix.php?id=55742&r=notwrong
Not enough info:                     https://bugs.php.net/fix.php?id=55742&r=notenoughinfo
Submitted twice:                     https://bugs.php.net/fix.php?id=55742&r=submittedtwice
register_globals:                    https://bugs.php.net/fix.php?id=55742&r=globals
PHP 4 support discontinued:          https://bugs.php.net/fix.php?id=55742&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=55742&r=dst
IIS Stability:                       https://bugs.php.net/fix.php?id=55742&r=isapi
Install GNU Sed:                     https://bugs.php.net/fix.php?id=55742&r=gnused
Floating point limitations:          https://bugs.php.net/fix.php?id=55742&r=float
No Zend Extensions:                  https://bugs.php.net/fix.php?id=55742&r=nozend
MySQL Configuration Error:           https://bugs.php.net/fix.php?id=55742&r=mysqlcfg


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