Description:
------------
hi ,
first of all
sorry for my bad english

but trim could not work as expected
i run the program in 5.14,5.25 ,it could not work as expected.


Reproduce code:
---------------
<?php
$stringendingtag='<ending>';
$s='hello world <abc><ending>';
echo trim($s,'<ending>');
?>

Expected result:
----------------
hello world <abc>


Actual result:
--------------
hello world <abc