headers.php

一、修改产品详细页面的附件块 二、添加上浏览历史模块 三、在后台加入自定义首页、自定义页头、自定义页脚内容功能 四、在后台修改网站全局CSS样式文件功能 五、在后台修改每个模块的模板内容功能

<?php

/**
 * Swift Mailer MIME Library Headers component
 * Please read the LICENSE file
 * @copyright Chris Corbyn <[e-mail]>
 * @author Chris Corbyn <[e-mail]>
 * @package Swift_Message
 * @license GNU Lesser General Public License
 */

require_once dirname(__FILE__) . "/../ClassLoader.php";

/**
 * Contains and constructs the headers for a MIME document
 * @package Swift_Message
 * @author Chris Corbyn <[e-mail]>
 */
class Swift_Message_Headers
{
  /**
   * Headers which may contain email addresses, and therefore should take notice when encoding
   * @var array headers
   */
  protected $emailContainingHeaders = array(
    "To", "From", "Reply-To", "Cc", "Bcc", "Return-Path", "Sender");
  /**
   * The encoding format used for the body of the document
   * @var string format
   */
  protected $encoding = "Q";
  /**
   * The charset used in the headers
   * @var string
   */
  protected $charset = false;
  /**
   * A collection of headers
   * @var array headers
   */
  protected $headers = array();
  /**
   * A container of references to the headers
   * @var array
   */
  protected $lowerHeaders = array();
  /**
   * Attributes appended to headers
   * @var array
   */
  protected $attributes = array();
  /**
   * If QP or Base64 encoding should be forced
   * @var boolean
   */
  protected $forceEncoding = false;
  /**
   * The language used in the headers (doesn't really matter much)
   * @var string
   */
  protected $language = "en-us";
  /**
   * Cached, pre-built headers
   * @var string
   */
  protected $cached = array();
  /**
   * The line ending used in the headers
   * @var string
   */
  protected $LE = "\r\n";
  
  /**
   * Set the line ending character to use
   * @param string The line ending sequence
   * @return boolean
   */
  public function setLE($le)
  {
    if (in_array($le, array("\r", "\n", "\r\n")))
    {
      foreach (array_keys($this->cached) as $k) $this->cached[$k] = null;
      $this->LE = $le;
      return true;
    }
    else return false;
  }
  /**
   * Get the line ending sequence
   * @return string
   */
  public function getLE()
  {
    return $this->LE;
  }
  /**
   * Reset the cache state in these headers
   */
  public function uncacheAll()
  {
    foreach (array_keys($this->cached) as $k)
    {
      $this->cached[$k] = null;
    }
  }
  /**
   * Add a header or change an existing header value
   * @param string The header name, for example "From" or "Subject"
   * @param string The value to be inserted into the header.  This is safe from header injection.
   */
  public function set($name, $value)
  {
    $lname = strtolower($name);
    if (!isset($this->lowerHeaders[$lname]))
    {
      $this->headers[$name] = null;
      $this->lowerHeaders[$lname] =& $this->headers[$name];
    }
    $this->cached[$lname] = null;
    Swift_ClassLoader::load("Swift_Message_Encoder");
    if (is_array($value))
    {
      foreach ($value as $v)
      {
        if (!$this->getCharset() && Swift_Message_Encoder::instance()->isUTF8($v))
        {
          $this->setCharset("utf-8");
          break;
        }
      }
    }
    elseif ($value !== null)
    {
      if (!$this->getCharset() && Swift_Message_Encoder::instance()->isUTF8($value))
      {
        $this->setCharset("utf-8");
      }
    }
    if (!is_array($value) && $value !== null) $this->lowerHeaders[$lname] = (string) $value;
    else $this->lowerHeaders[$lname] = $value;
  }
  /**
   * Get the value at a given header
   * @param string The name of the header, for example "From" or "Subject"
   * @return string
   * @throws Swift_Message_MimeException If no such header exists
   * @see hasHeader
   */
  public function get($name)
  {
    $lname = strtolower($name);
    if ($this->has($name))
    {
      return $this->lowerHeaders[$lname];
    }
  }
  /**
   * Remove a header from the list
   * @param string The name of the header
   */
  public function remove($name)
  {
    $lname = strtolower($name);
    if ($this->has($name))
    {
      unset($this->headers[$name]);
      unset($this->lowerHeaders[$lname]);
      unset($this->cached[$lname]);
      if (isset($this->attributes[$lname])) unset($this->attributes[$lname]);
    }
  }
  /**
   * Just fetch the array containing the headers
   * @return array
   */
  public function getList()
  {
    return $this->headers;
  }
  /**
   * Check if a header has been set or not
   * @param string The name of the header, for example "From" or "Subject"
   * @return boolean
   */
  public function has($name)
  {
    $lname = strtolower($name);
    return (array_key_exists($lname, $this->lowerHeaders) && $this->lowerHeaders[$lname] !== null);
  }
  /**
   * Set the language used in the headers to $lang (e.g. en-us, en-gb, sv etc)
   * @param string The language to use
   */
  public function setLanguage($lang)
  {
    $this->language = (string) $lang;
  }
  /**
   * Get the language used in the headers to $lang (e.g. en-us, en-gb, sv etc)
   * @return string
   */
  public function getLanguage()
  {
    return $this->language;
  }
  /**
   * Set the charset used in the headers
   * @param string The charset name
   */
  public function setCharset($charset)
  {
    $this->charset = (string) $charset;
  }
  /**
   * Get the current charset used
   * @return string
   */
  public function getCharset()
  {
    return $this->charset;
  }
  /**
   * Specify the encoding to use for the headers if characters outside the 7-bit-printable ascii range are found
   * This encoding will never be used if only 7-bit-printable characters are found in the headers.
   * Possible values are:
   *  - QP
   *  - Q
   *  - Quoted-Printable
   *  - B
   *  - Base64
   * NOTE: Q, QP, Quoted-Printable are all the same; as are B and Base64
   * @param string The encoding format to use
   * @return boolean
   */
  public function setEncoding($encoding)
  {
    switch (strtolower($encoding))
    {
      case "qp": case "q": case "quoted-printable":
      $this->encoding = "Q";
      return true;
      case "base64": case "b":
      $this->encoding = "B";
      return true;
      default: return false;
    }
  }
  /**
   * Get the encoding format used in this document
   * @return string
   */
  public function getEncoding()
  {
    return $this->encoding;
  }
  /**
   * Turn on or off forced header encoding
   * @param boolean On/Off
   */
  public function forceEncoding($force=true)
  {
    $this->forceEncoding = (boolean) $force;
  }
  /**
   * Set an attribute in a major header
   * For example $headers->setAttribute("Content-Type", "format", "flowed")
   * @param string The main header these values exist in
   * @param string The name for this value
   * @param string The value to set
   * @throws Swift_Message_MimeException If no such header exists
   */
  public function setAttribute($header, $name, $value)
  {
    $name = strtolower($name);
    $lheader = strtolower($header);
    $this->cached[$lheader] = null;
    if (!$this->has($header))
    {
      throw new Swift_Message_MimeException(
      "Cannot set attribute '" . $name . "' for header '" . $header . "' as the header does not exist. " .
      "Consider using Swift_Message_Headers-&gt;has() to check.");
    }
    else
    {
      Swift_ClassLoader::load("Swift_Message_Encoder");
      if (!$this->getCharset() && Swift_Message_Encoder::instance()->isUTF8($value)) $this->setCharset("utf-8");
      if (!isset($this->attributes[$lheader])) $this->attributes[$lheader] = array();