<?php
$text = "\t\tThese are a few words :) ... ";
$trimmed = trim($text);
// $trimmed = "These are a few words :) ... "
$trimmed = trim($text," \t.");
// $trimmed = "These are a few words :)"
$clean = trim($binary,"\0x00..\0x1F");
// $binaryの始めおよび最後にあるASCII制御文字(0から31まで)を削除
?>