三款php多文件上传实例代码(1/3)

function upload() {
   $ilen = sizeof($this->postfile['name']);
   for($i=0;$i<$ilen;$i++){
    if ($this->postfile['error'][$i] == 0) { //上传时没有发生错误
      //取当前文件名、临时文件名、大小、扩展名，后面将用到。
     $sname   = $this->postfile['name'][$i];
     $stname = $this->postfile['tmp_name'][$i];
     $isize   = $this->postfile['size'][$i];
     $stype   = $this->postfile['type'][$i];
     $sextn   = $this->_getextname($sname);
   
     //检测当前上传文件大小是否合法。
     if($this->_checksize){
      $this->lasterror = "您上传的文件[".$sname."],超过系统支持大小!";
      $this->_showmsg($this->lasterror);
      continue;
     }

     if(!is_uploaded_file($stname)) {
      $this->lasterror = "您的文件不是通过正常途径上传!";
      $this->_showmsg($this->lasterror);
      continue;
     }
     $_filename = basename($sname,".".$sextn)."_".time().".".$sextn;
     $this->endfilename = $this->custompath.$_filename;
   
     if(!move_uploaded_file($stname, $this->root_dir.$this->endfilename)) {
      $this->lasterror = $this->postfile['error'][$i];
      $this->_showmsg($this->lasterror);
      continue;
     }

     //存储当前文件的有关信息，以便其它程序调用。
     $this->save_info[] =   array("name" => $sname, "type" => $sextn, "size" => $isize,   "path" => $this->endfilename);
    }
   }

   return sizeof($this->save_info);
}

$link = @mysql_connect($db_host,$db_user,$db_pass) or die('unable to establish a db connection');

mysql_query("set names 'utf8'");
mysql_select_db($db_database,$link);

class comment
{
 private $data = array();
 
 public function __construct($row)
 {
  /*
  / the constructor
  */
  
  $this->data = $row;
 }
 
 public function markup()
 {
  /*
  / this method outputs the xhtml markup of the comment
  */
  
  // setting up an alias, so we don't have to write $this->data every time:
  $d = &$this->data;
  
  $link_open = '';
  $link_close = '';
  
  if($d['url']){
   
   // if the person has entered a url when adding a comment,
   // define opening and closing hyperlink tags
   
   $link_open = '<a href="'.$d['url'].'">';
   $link_close =  '</a>';
  }
  
  // converting the time to a unix timestamp:
  $d['dt'] = strtotime($d['dt']);
  
  // needed for the default gravatar image:
  $url = 'http://'.dirname($_server['server_name'].$_server["request_uri"]).'/img/default_avatar.gif';
  
  return '
  
   <div class="comment">
    <div class="avatar">
     '.$link_open.'
     <img src="http://www.gravatar.com/avatar/'.md5($d['email']).'?size=50&amp;default='.urlencode($url).'" />
     '.$link_close.'
    </div>
    
    <div class="name">'.$link_open.$d['name'].$link_close.'</div>
    <div class="date" title="added at '.date('h:i on d m y',$d['dt']).'">'.date('d m y',$d['dt']).'</div>
    <p>'.$d['body'].'</p>
   </div>
  ';
 }
 
 public static function validate(&$arr)
 {
  /*
  / this method is used to validate the data sent via ajax.
  /
  / it return true/false depending on whether the data is valid, and populates
  / the $arr array passed as a paremter (notice the ampersand above) with
  / either the valid input data, or the error messages.
  */
  
  $errors = array();
  $data = array();
  
  // using the filter_input function introduced in php 5.2.0
  
  if(!($data['email'] = filter_input(input_post,'email',filter_validate_email)))
  {
   $errors['email'] = 'please enter a valid email.';
  }
  
  if(!($data['url'] = filter_input(input_post,'url',filter_validate_url)))
  {
   // if the url field was not populated with a valid url,
   // act as if no url was entered at all:
   
   $url = '';
  }
  
  // using the filter with a custom callback function:
  
  if(!($data['body'] = filter_input(input_post,'body',filter_callback,array('options'=>'comment::validate_text'))))
  {
   $errors['body'] = 'please enter a comment body.';
  }
  
  if(!($data['name'] = filter_input(input_post,'name',filter_callback,array('options'=>'comment::validate_text'))))
  {
   $errors['name'] = 'please enter a name.';
  }
  
  if(!empty($errors)){
   
   // if there are errors, copy the $errors array to $arr:
   
   $arr = $errors;
   return false;
  }
  
  // if the data is valid, sanitize all the data and copy it to $arr:
  
  foreach($data as $k=>$v){
   $arr[$k] = mysql_real_escape_string($v);
  }
  
  // ensure that the email is lower case:
  
  $arr['email'] = strtolower(trim($arr['email']));
  
  return true;
  
 }

 private static function validate_text($str)
 {
  /*
  / this method is used internally as a filter_callback
  */
  
  if(mb_strlen($str,'utf8')<1)
   return false;
  
  // encode all html special characters (<, >, ", & .. etc) and convert
  // the new line characters to <br> tags:
  
  $str = nl2br(htmlspecialchars($str));
  
  // remove the new line characters that are left
  $str = str_replace(array(chr(10),chr(13)),'',$str);
  
  return $str;
 }

}

$comments = array();
$result = mysql_query("select * from comments order by id asc");

while($row = mysql_fetch_assoc($result))
{
 $comments[] = new comment($row);
}

?>

<!doctype html public "-//w3c//dtd xhtml 1.0 strict//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<title>simple ajax commenting system | tutorialzine demo</title>

<link rel="stylesheet" type="text/css教程" href="styles.css" />

</head>

<body>

<div id="main">

<?php

/*
/ output the comments one by one:
*/

foreach($comments as $c){
 echo $c->markup();
}

?>

<div id="addcommentcontainer">
 <p>add a comment</p>
 <form id="addcommentform" method="post" action="">
     <div>
         <label for="name">your name</label>
         <input type="text" name="name" id="name" />
           
            <label for="email">your email</label>
            <input type="text" name="email" id="email" />
           
            <label for="url">website (not required)</label>
            <input type="text" name="url" id="url" />
           
            <label for="body">comment body</label>
            <textarea name="body" id="body" cols="20" rows="5"></textarea>
           
            <input type="submit" id="submit" value="submit" />
        </div>
    </form>
</div>

</div>

<script type="text/网页特效" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="script.js"></script>

</body>
</html>

--
-- table structure for table `comments`
--

create table `comments` (
  `id` int(10) unsigned not null auto_increment,
  `name` varchar(128) collate utf8_unicode_ci not null default '',
  `url` varchar(255) collate utf8_unicode_ci not null default '',
  `email` varchar(255) collate utf8_unicode_ci not null default '',
  `body` text collate utf8_unicode_ci not null,
  `dt` timestamp not null default '0000-00-00',
  primary key  (`id`)
) engine=myisam  default charset=utf8 collate=utf8_unicode_ci;