gistfile1.php

<?php
  /**
   * Trim all odd characters.
   *
   *  Character      Decimal      Use
   *  "\0"            0           Null Character
   *  "\t"            9           Tab
   *  "\n"           10           New line
   *  "\x0B"         11           Vertical Tab
   *  "\r"           13           New Line in Mac
   *  " "            32           Space
   *
   * @param string $str
   *   the string to trim
   *
   * @return string
   *   The trimmed string.
   */
  public function trimAll($str) {

    $what = "\\x00-\\x20";

    return trim(preg_replace("/[" . $what . "]+/", ' ', $str), $what);
  }