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e6mb
7年前发布

PHP 工具类库

    <?php        /**         * 常用工具类         * author Lee.         * Last modify $Date: 2012-8-23       */        class Tool {            /**            * js 弹窗并且跳转            * @param string $_info            * @param string $_url            * @return js            */            static public function alertLocation($_info, $_url) {                echo "<script type='text/javascript'>alert('$_info');location.href='$_url';</script>";                exit();            }                        /**            * js 弹窗返回            * @param string $_info            * @return js            */            static public function alertBack($_info) {                echo "<script type='text/javascript'>alert('$_info');history.back();</script>";                exit();            }                        /**            * 页面跳转            * @param string $url            * @return js            */            static public function headerUrl($url) {                echo "<script type='text/javascript'>location.href='{$url}';</script>";                exit();            }                        /**            * 弹窗关闭            * @param string $_info            * @return js            */            static public function alertClose($_info) {                echo "<script type='text/javascript'>alert('$_info');close();</script>";                exit();            }                        /**            * 弹窗            * @param string $_info            * @return js            */            static public function alert($_info) {                echo "<script type='text/javascript'>alert('$_info');</script>";                exit();            }                        /**            * 系统基本参数上传图片专用            * @param string $_path            * @return null            */            static public function sysUploadImg($_path) {                echo '<script type="text/javascript">document.getElementById("logo").value="'.$_path.'";</script>';                echo '<script type="text/javascript">document.getElementById("pic").src="'.$_path.'";</script>';                echo '<script type="text/javascript">$("#loginpop1").hide();</script>';                echo '<script type="text/javascript">$("#bgloginpop2").hide();</script>';            }                        /**            * html过滤            * @param array|object $_date            * @return string            */            static public function htmlString($_date) {                if (is_array($_date)) {                    foreach ($_date as $_key=>$_value) {                        $_string[$_key] = Tool::htmlString($_value);  //递归                    }                } elseif (is_object($_date)) {                    foreach ($_date as $_key=>$_value) {                        $_string->$_key = Tool::htmlString($_value);  //递归                    }                } else {                    $_string = htmlspecialchars($_date);                }                return $_string;            }                        /**            * 数据库输入过滤            * @param string $_data            * @return string            */            static public function mysqlString($_data) {                $_data = trim($_data);                return !GPC ? addcslashes($_data) : $_data;            }                        /**            * 清理session            */            static public function unSession() {                if (session_start()) {                    session_destroy();                }            }                        /**            * 验证是否为空            * @param string $str            * @param string $name            * @return bool (true or false)            */            static function validateEmpty($str, $name) {                if (empty($str)) {                    self::alertBack('警告:' .$name . '不能为空!');                }            }                        /**            * 验证是否相同            * @param string $str1            * @param string $str2            * @param string $alert            * @return JS             */            static function validateAll($str1, $str2, $alert) {                if ($str1 != $str2) self::alertBack('警告:' .$alert);            }                        /**            * 验证ID            * @param Number $id            * @return JS            */            static function validateId($id) {                if (empty($id) || !is_numeric($id)) self::alertBack('警告:参数错误!');            }                        /**            * 格式化字符串            * @param string $str            * @return string            */            static public function formatStr($str) {                $arr = array(' ', ' ', '&', '@', '#', '%',  '\'', '"', '\\', '/', '.', ',', '$', '^', '*', '(', ')', '[', ']', '{', '}', '|', '~', '`', '?', '!', ';', ':', '-', '_', '+', '=');                foreach ($arr as $v) {                    $str = str_replace($v, '', $str);                }                return $str;            }                        /**            * 格式化时间            * @param int $time 时间戳            * @return string            */            static public function formatDate($time='default') {                $date = $time == 'default' ? date('Y-m-d H:i:s', time()) : date('Y-m-d H:i:s', $time);                return $date;            }                        /**             * 获得真实IP地址             * @return string             */            static public function realIp() {                   static $realip = NULL;                   if ($realip !== NULL) return $realip;                  if (isset($_SERVER)) {                      if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {                           $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);                          foreach ($arr AS $ip) {                              $ip = trim($ip);                              if ($ip != 'unknown') {                                   $realip = $ip;                                   break;                               }                           }                       } elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {                           $realip = $_SERVER['HTTP_CLIENT_IP'];                      } else {                           if (isset($_SERVER['REMOTE_ADDR'])) {                               $realip = $_SERVER['REMOTE_ADDR'];                           } else {                               $realip = '0.0.0.0';                           }                      }                  } else {                      if (getenv('HTTP_X_FORWARDED_FOR')) {                          $realip = getenv('HTTP_X_FORWARDED_FOR');                      } elseif (getenv('HTTP_CLIENT_IP')) {                          $realip = getenv('HTTP_CLIENT_IP');                      } else {                          $realip = getenv('REMOTE_ADDR');                      }                  }                preg_match('/[\d\.]{7,15}/', $realip, $onlineip);                  $realip = !empty($onlineip[0]) ? $onlineip[0] : '0.0.0.0';                  return $realip;              }                        /**            * 加载 Smarty 模板            * @param string $html            * @return null;            */            static public function display() {                global $tpl;$html = null;                $htmlArr = explode('/', $_SERVER[SCRIPT_NAME]);                $html = str_ireplace('.php', '.html', $htmlArr[count($htmlArr)-1]);                $dir = dirname($_SERVER[SCRIPT_NAME]);                $firstStr = substr($dir, 0, 1);                $endStr = substr($dir, strlen($dir)-1, 1);                if ($firstStr == '/' || $firstStr == '\\') $dir = substr($dir, 1);                if ($endStr != '/' || $endStr != '\\') $dir = $dir . '/';                $tpl->display($dir.$html);            }                        /**            * 创建目录            * @param string $dir            */            static public function createDir($dir) {                if (!is_dir($dir)) {                    mkdir($dir, 0777);                }            }                        /**            * 创建文件(默认为空)            * @param unknown_type $filename            */            static public function createFile($filename) {                if (!is_file($filename)) touch($filename);            }                        /**            * 正确获取变量            * @param string $param            * @param string $type            * @return string            */            static public function getData($param, $type='post') {                $type = strtolower($type);                if ($type=='post') {                    return Tool::mysqlString(trim($_POST[$param]));                } elseif ($type=='get') {                    return Tool::mysqlString(trim($_GET[$param]));                }            }                        /**            * 删除文件            * @param string $filename            */            static public function delFile($filename) {                if (file_exists($filename)) unlink($filename);            }                        /**            * 删除目录            * @param string $path            */            static public function delDir($path) {                if (is_dir($path)) rmdir($path);            }                        /**            * 删除目录及地下的全部文件            * @param string $dir            * @return bool            */            static public function delDirOfAll($dir) {                //先删除目录下的文件:                if (is_dir($dir)) {                    $dh=opendir($dir);                    while (!!$file=readdir($dh)) {                        if($file!="." && $file!="..") {                            $fullpath=$dir."/".$file;                            if(!is_dir($fullpath)) {                                unlink($fullpath);                            } else {                                self::delDirOfAll($fullpath);                            }                        }                    }                    closedir($dh);                    //删除当前文件夹:                    if(rmdir($dir)) {                        return true;                    } else {                        return false;                    }                }            }                    /**            * 验证登陆            */            static public function validateLogin() {                if (empty($_SESSION['admin']['user'])) header('Location:/admin/');            }                        /**            * 给已经存在的图片添加水印            * @param string $file_path            * @return bool            */            static public function addMark($file_path) {                if (file_exists($file_path) && file_exists(MARK)) {                    //求出上传图片的名称后缀                    $ext_name = strtolower(substr($file_path, strrpos($file_path, '.'), strlen($file_path)));                    //$new_name='jzy_' . time() . rand(1000,9999) . $ext_name ;                    $store_path = ROOT_PATH . UPDIR;                    //求上传图片高宽                    $imginfo = getimagesize($file_path);                    $width = $imginfo[0];                    $height = $imginfo[1];                     //添加图片水印                                 switch($ext_name) {                        case '.gif':                            $dst_im = imagecreatefromgif($file_path);                            break;                        case '.jpg':                            $dst_im = imagecreatefromjpeg($file_path);                            break;                        case '.png':                            $dst_im = imagecreatefrompng($file_path);                            break;                    }                    $src_im = imagecreatefrompng(MARK);                    //求水印图片高宽                    $src_imginfo = getimagesize(MARK);                    $src_width = $src_imginfo[0];                    $src_height = $src_imginfo[1];                    //求出水印图片的实际生成位置                    $src_x = $width - $src_width - 10;                    $src_y = $height - $src_height - 10;                    //新建一个真彩色图像                    $nimage = imagecreatetruecolor($width, $height);                                   //拷贝上传图片到真彩图像                    imagecopy($nimage, $dst_im, 0, 0, 0, 0, $width, $height);                              //按坐标位置拷贝水印图片到真彩图像上                    imagecopy($nimage, $src_im, $src_x, $src_y, 0, 0, $src_width, $src_height);                    //分情况输出生成后的水印图片                    switch($ext_name) {                        case '.gif':                            imagegif($nimage, $file_path);                            break;                        case '.jpg':                            imagejpeg($nimage, $file_path);                            break;                        case '.png':                            imagepng($nimage, $file_path);                            break;                         }                    //释放资源                     imagedestroy($dst_im);                    imagedestroy($src_im);                    unset($imginfo);                    unset($src_imginfo);                    //移动生成后的图片                    @move_uploaded_file($file_path, ROOT_PATH.UPDIR . $file_path);                }            }                        /**           *  中文截取2,单字节截取模式           * @access public           * @param string $str  需要截取的字符串           * @param int $slen  截取的长度           * @param int $startdd  开始标记处           * @return string           */            static public function cn_substr($str, $slen, $startdd=0){                $cfg_soft_lang = PAGECHARSET;                if($cfg_soft_lang=='utf-8') {                    return self::cn_substr_utf8($str, $slen, $startdd);                }                $restr = '';                $c = '';                $str_len = strlen($str);                if($str_len < $startdd+1) {                    return '';                }                if($str_len < $startdd + $slen || $slen==0) {                    $slen = $str_len - $startdd;                }                $enddd = $startdd + $slen - 1;                for($i=0;$i<$str_len;$i++) {                    if($startdd==0) {                        $restr .= $c;                    } elseif($i > $startdd) {                        $restr .= $c;                    }                    if(ord($str[$i])>0x80) {                        if($str_len>$i+1) {                            $c = $str[$i].$str[$i+1];                        }                        $i++;                    } else {                        $c = $str[$i];                    }                    if($i >= $enddd) {                        if(strlen($restr)+strlen($c)>$slen) {                            break;                        } else {                            $restr .= $c;                            break;                        }                    }                }                return $restr;            }                    /**           *  utf-8中文截取,单字节截取模式           *           * @access public           * @param string $str 需要截取的字符串           * @param int $slen 截取的长度           * @param int $startdd 开始标记处           * @return string           */            static public function cn_substr_utf8($str, $length, $start=0) {                if(strlen($str) < $start+1) {                    return '';                }                preg_match_all("/./su", $str, $ar);                $str = '';                $tstr = '';                //为了兼容mysql4.1以下版本,与数据库varchar一致,这里使用按字节截取                for($i=0; isset($ar[0][$i]); $i++) {                    if(strlen($tstr) < $start) {                        $tstr .= $ar[0][$i];                    } else {                        if(strlen($str) < $length + strlen($ar[0][$i]) ) {                            $str .= $ar[0][$i];                        } else {                            break;                        }                    }                }                return $str;            }                        /**            * 删除图片,根据图片ID            * @param int $image_id            */            static function delPicByImageId($image_id) {                $db_name = PREFIX . 'images i';                $m = new Model();                $data = $m->getOne($db_name, "i.id={$image_id}", "i.path as p, i.big_img as b, i.small_img as s");                foreach ($data as $v) {                    @self::delFile(ROOT_PATH . $v['p']);                    @self::delFile(ROOT_PATH . $v['b']);                    @self::delFile(ROOT_PATH . $v['s']);                }                $m->del(PREFIX . 'images', "id={$image_id}");                unset($m);            }                        /**            * 图片等比例缩放            * @param resource $im    新建图片资源(imagecreatefromjpeg/imagecreatefrompng/imagecreatefromgif)            * @param int $maxwidth   生成图像宽            * @param int $maxheight  生成图像高            * @param string $name    生成图像名称            * @param string $filetype文件类型(.jpg/.gif/.png)            */            static public function resizeImage($im, $maxwidth, $maxheight, $name, $filetype) {                $pic_width = imagesx($im);                $pic_height = imagesy($im);                if(($maxwidth && $pic_width > $maxwidth) || ($maxheight && $pic_height > $maxheight)) {                    if($maxwidth && $pic_width>$maxwidth) {                        $widthratio = $maxwidth/$pic_width;                        $resizewidth_tag = true;                    }                    if($maxheight && $pic_height>$maxheight) {                        $heightratio = $maxheight/$pic_height;                        $resizeheight_tag = true;                    }                    if($resizewidth_tag && $resizeheight_tag) {                        if($widthratio<$heightratio)                            $ratio = $widthratio;                        else                            $ratio = $heightratio;                    }                    if($resizewidth_tag && !$resizeheight_tag)                        $ratio = $widthratio;                    if($resizeheight_tag && !$resizewidth_tag)                        $ratio = $heightratio;                    $newwidth = $pic_width * $ratio;                    $newheight = $pic_height * $ratio;                    if(function_exists("imagecopyresampled")) {                        $newim = imagecreatetruecolor($newwidth,$newheight);                        imagecopyresampled($newim,$im,0,0,0,0,$newwidth,$newheight,$pic_width,$pic_height);                    } else {                        $newim = imagecreate($newwidth,$newheight);                        imagecopyresized($newim,$im,0,0,0,0,$newwidth,$newheight,$pic_width,$pic_height);                    }                    $name = $name.$filetype;                    imagejpeg($newim,$name);                    imagedestroy($newim);                } else {                    $name = $name.$filetype;                    imagejpeg($im,$name);                }            }                    /**            * 下载文件            * @param string $file_path 绝对路径            */            static public function downFile($file_path) {                //判断文件是否存在                $file_path = iconv('utf-8', 'gb2312', $file_path); //对可能出现的中文名称进行转码                if (!file_exists($file_path)) {                    exit('文件不存在!');                }                $file_name = basename($file_path); //获取文件名称                $file_size = filesize($file_path); //获取文件大小                $fp = fopen($file_path, 'r'); //以只读的方式打开文件                header("Content-type: application/octet-stream");                header("Accept-Ranges: bytes");                header("Accept-Length: {$file_size}");                header("Content-Disposition: attachment;filename={$file_name}");                $buffer = 1024;                $file_count = 0;                //判断文件是否结束                while (!feof($fp) && ($file_size-$file_count>0)) {                    $file_data = fread($fp, $buffer);                    $file_count += $buffer;                    echo $file_data;                }                fclose($fp); //关闭文件            }        }        ?>