Description:
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Noticed an odd behavior whereby a PHP trim function which includes the "\t" as an optional charlist entry will strip the character "t" from the string if it happens to be the last char.



Test script:
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$returnValue = trim('someurl.net', '\\t');
$returnValue = "someurl.ne"

or 

$returnValue = trim('someurl.net', ' \t\n\r\0\x0B/');
$returnValue = "someurl.ne"

however this is fine ...

$returnValue = trim('someurl.netx', '\t');
$returnValue = "someurl.netx"

Expected result:
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I did not expect that my url's .net domain would "lose" its ending "t" char as a result of performing a trim that included the tab "\t" entry within its char list.