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Bug #20283 Trim function doesn't work at all
Submitted: 2002-11-06 10:00 UTC Modified: 2002-11-07 05:35 UTC
From: glanzafilippi at molinette dot piemonte dot it Assigned:
Status: Not a bug Package: Strings related
PHP Version: 4.2.3 OS: Linux RedHat 7.3
Private report: No CVE-ID: None
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From: glanzafilippi at molinette dot piemonte dot it
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 [2002-11-06 10:00 UTC] glanzafilippi at molinette dot piemonte dot it 
My Os is Linux Red Hat 7.3. Web Server is Zeus 4.1r3.
I compiled php with fastcgi.

i tried in several way but i noticed that in every case trim function doesn't work at all.

This is a little piece of code:
<?php
// $user_data['unitHospital'] == "Osp. San Giovanni"
$fileNameCleaned = trim($user_data['unitHospital']);
print($fileNameCleaned); 
?>

Result
Osp. San Giovanni

OR directly

<?php
$tmp = trim("dd ff  hhkkk");
print($tmp);
?>

Result:
dd ff  hhkkk

The same result with 'rtrim' -- 'ltrim' and with a direct specification of charlist.

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 [2002-11-06 10:04 UTC] iliaa@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

Trim function will only trim 'space' characters, unless you specify a list of characters you want to trim via the 2nd, optional parameter.
 [2002-11-07 02:36 UTC] glanzafilippi at molinette dot piemonte dot it 
Thanks for your answer, but my question remain. I know that trim function only 'trim' spaces, but in my case trim doesn't trim anything. No spaces and no other charlist. 

From the online manual:
>Without the second parameter, trim() will strip these >characters:  
>" " (ASCII 32 (0x20)), an ordinary space.

Probably i'm explaining the problem in a wrong way. Please tell me where i'm wrong.

Thanks.
 [2002-11-07 05:21 UTC] m dot ford at lmu dot ac dot uk 
Well, as your example values do not include any spaces which could be trimmed, I don't see how you can say trim() is not working!

Cheers!

Mike
 [2002-11-07 05:35 UTC] glanzafilippi at molinette dot piemonte dot it 
Sorry, and sorry again. 

A superficial reading of the manual let me "think" that trim function strip every spaces or every charlist from the start to the end of a string. 

Thanks a lot for your patience.
 
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