文件上传类，,example:$upl

文件上传类，,example:$upl

example:

$uploader = & new Uploader();

$uploader->upload($_FILES['attch'], JPATH_COMPONENT.'/attachments',array('jpg','gif'));

$uploader->result_report();

if(count($uploader->uploaded_files))

$filename = $uploader->uploaded_files[0];

else

// no upload file

<?PHP/** * Uploader *  * @package my * @author php100.com * @copyright 2010 * @version $Id$ * @access public */class Uploader {    public $files = array();    private $errors = array();    private $file_names = array();    private $directory = NULL;    private $uploaded = false;    # uploaded file name    public $uploaded_files = array();    private $file_new_name = NULL;    private $results = NULL;    /**     * set directory attribute     *      * @param mixed $directory     * @return     */    function directory($directory) {        if (!is_dir($directory)) {            $this -> errors []= $directory.' not a directory';        }        if (!is_writable($directory)) {            $this -> errors []= $directory.' unwritable';        }        $this -> directory = $directory;    }    /**     * set files attribute     *      * @param mixed $files     * @return     */    function files($files)    {        if(empty($files)) {            throw new Exception('file array is empty');        }        if (!is_array($files['tmp_name'])) {            $this -> files['tmp_name'][] = $files['tmp_name'];            $this -> files['name'][] = $files['name'];            $this -> files['type'][] = $files['type'];            $this -> files['size'][] = $files['size'];        }        else {            for ($i = 0; $i < count($files['name']); $i++) {                if ($files['name'][$i]) {                    $this -> files['tmp_name'][] = $files['tmp_name'][$i];                    $this -> files['name'][] = $files['name'][$i];                    $this -> files['type'][] = $files['type'][$i];                    $this -> files['size'][] = $files['size'][$i];                }            }        }    }    /**     * Uploader::bad_character_rewrite()     *      * @param mixed $text     * @return     */    private function bad_character_rewrite($text)    {            $first = array("\\\\", "/", ":", ";", "~", "|", "(", ")", "\\"", "#", "*", "$", "@", "%", "[", "]", "{", "}", "<", ">", "`", "'", ",", " ", "臒", "臑", "眉", "脺", "艧", "艦", "谋", "陌", "枚", "脰", "莽", "脟");            $last = array("_", "_", "_", "_", "_", "_", "", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "", "_", "_", "g", "G", "u", "U", "s", "S", "i", "I", "o", "O", "c", "C");            $text_rewrite = str_replace($first, $last, $text);            return $text_rewrite;    }    /**     * get file extension     *      * @param mixed $file_name     * @return     */    public function file_extension($file_name)    {        $file_extension = strtolower(substr(strrchr($file_name, '.'), 1));        return $file_extension;    }    private function file_name($file)    {        return strtolower(substr($file, 0, strpos($file, '.')));    }    /**     * create random file name     *      * @param mixed $file_name  no used     * @return     */    private function _file_name_control($file_name)    {        if(file_exists($this->directory.'/'.$file_name)) {            //return $this->file_name($file_name).strtolower(rand() % 1000000).'.'.$this->file_extension($file_name);            return strtolower(rand() % 1000000).'_'.$file_name;        }        else            return $file_name;    }    /**     * Uploader::_begin_upload()     *      * @param mixed $extensions     * @return void     */    function _begin_upload($extensions)    {        if(!count($this->errors)) {            for ($i = 0; $i < count($this -> files['tmp_name']); $i++)             {                if (in_array($this->file_extension($this->files['name'][$i]), $extensions))                 {                    $this->file_new_name = $this ->_file_name_control($this-> files['name'][$i]);                    move_uploaded_file($this -> files['tmp_name'][$i], $this-> directory.'/'.$this -> file_new_name);                    $this -> uploaded_files[] = $this -> file_new_name;                    $this -> results .= '<li><strong>'.$this -> files['name'][$i].'</strong> change name to  <strong>'.$this -> file_new_name.'</strong>, file size <br />(~'.round($this -> files['size'][$i] / 1024, 2).' kb). </li>';                }                else                {                    $this -> results .= '<li>'.$this -> files['name'][$i].' no access type</li>';                }            }            $this -> uploaded = true;        } else {            foreach($this->errors as $error) {                throw new Exception($error);            }        }    }    /**     * print report     *      * @return     */    function result_report()    {        if ($this -> uploaded == true) {            echo '<ul>';            echo $this -> results;            echo '</ul>';        }    }    /**     * Uploader::upload()     *      * @param mixed $files     * @param mixed $directory     * @param mixed $extensions     * @return     */    function upload($files, $directory, $extensions=array('jpg', 'jpeg', 'png', 'gif'))    {        $this -> directory($directory);        $this -> files($files);        $this -> _begin_upload($extensions);    }}//该片段来自于http://byrx.net