Trim multiple characters using php

Question

How to trim multiple characters at begin and end of string.
string should be something like {Hello {W}orld}.
i want to trim both { and }<

Answer 1

Is there always a character at the beginning and at the end, that you want to remove? If so you could just use the following:

<?php
$string = '{Hello {W}orld}';
echo substr( $string, 1, strlen( $string )-2 );
?>

See: http://codepad.org/IDbG6Km2

Answer 2

$str = "{Hello {W}orld}";
$str = trim($str, "{}");

echo "Trimmed: $str";