- <?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
- }
- }
- ?>
来源: http://www.phpxs.com/code/1003597/