本篇文章给大家带来的内容是关于Thinkphp上传类实现上传图片的代码,有一定的参考价值,有需要的朋友可以参考一下,希望对你有所帮助。
thinkphp如何上传图片呢?下面就为大家详细介绍下!
1、封装上传类方法
<?php //调用上传 public function uploadUser(){ $banner=$this->uploadYmdImg('ymd_banner'); if(!empty($banner)){ $data['ymd_banner']=$banner; } } /* * 封装图片上传 * */ public function uploadYmdImg($fileName,$route="banner"){ if(!empty($_FILES[$fileName]['tmp_name'])){ $upload = new \Think\Upload();// 实例化上传类 $upload->maxSize = 3145728 ;// 设置附件上传大小 $upload->exts = array('jpg', 'gif', 'png', 'jpeg');// 设置附件上传类型 $upload->rootPath = './Upload/'.$route.'/'; // 设置附件上传根目录 // 上传单个文件 $info = $upload->uploadOne($_FILES[$fileName]); if(!$info) {// 上传错误提示错误信息 $this->error($upload->getError()); }else{// 上传成功 获取上传文件信息 return C('TMPL_PARSE_STRING.__YIMUDI__').'/Upload/'.$route.'/'.$info['savepath'].$info['savename']; } }else{ return NULL; } }
2、Thinkphp内部定义的上传类
<?php // +---------------------------------------------------------------------- // | ThinkPHP [ WE CAN DO IT JUST THINK IT ] // +---------------------------------------------------------------------- // | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved. // +---------------------------------------------------------------------- namespace Think; class Upload { /** * 默认上传配置 * @var array */ private $config = array( 'mimes' => array(), //允许上传的文件MiMe类型 'maxSize' => 0, //上传的文件大小限制 (0-不做限制) 'exts' => array(), //允许上传的文件后缀 'autoSub' => true, //自动子目录保存文件 'subName' => array('date', 'Y-m-d'), //子目录创建方式,[0]-函数名,[1]-参数,多个参数使用数组 'rootPath' => './Uploads/', //保存根路径 'savePath' => '', //保存路径 'saveName' => array('uniqid', ''), //上传文件命名规则,[0]-函数名,[1]-参数,多个参数使用数组 'saveExt' => '', //文件保存后缀,空则使用原后缀 'replace' => false, //存在同名是否覆盖 'hash' => true, //是否生成hash编码 'callback' => false, //检测文件是否存在回调,如果存在返回文件信息数组 'driver' => '', // 文件上传驱动 'driverConfig' => array(), // 上传驱动配置 ); /** * 上传错误信息 * @var string */ private $error = ''; //上传错误信息 /** * 上传驱动实例 * @var Object */ private $uploader; /** * 构造方法,用于构造上传实例 * @param array $config 配置 * @param string $driver 要使用的上传驱动 LOCAL-本地上传驱动,FTP-FTP上传驱动 */ public function __construct($config = array(), $driver = '', $driverConfig = null){ /* 获取配置 */ $this->config = array_merge($this->config, $config); /* 设置上传驱动 */ $this->setDriver($driver, $driverConfig); /* 调整配置,把字符串配置参数转换为数组 */ if(!empty($this->config['mimes'])){ if(is_string($this->mimes)) { $this->config['mimes'] = explode(',', $this->mimes); } $this->config['mimes'] = array_map('strtolower', $this->mimes); } if(!empty($this->config['exts'])){ if (is_string($this->exts)){ $this->config['exts'] = explode(',', $this->exts); } $this->config['exts'] = array_map('strtolower', $this->exts); } } /** * 使用 $this->name 获取配置 * @param string $name 配置名称 * @return multitype 配置值 */ public function __get($name) { return $this->config[$name]; } public function __set($name,$value){ if(isset($this->config[$name])) { $this->config[$name] = $value; if($name == 'driverConfig'){ //改变驱动配置后重置上传驱动 //注意:必须选改变驱动然后再改变驱动配置 $this->setDriver(); } } } public function __isset($name){ return isset($this->config[$name]); } /** * 获取最后一次上传错误信息 * @return string 错误信息 */ public function getError(){ return $this->error; } /** * 上传单个文件 * @param array $file 文件数组 * @return array 上传成功后的文件信息 */ public function uploadOne($file){ $info = $this->upload(array($file)); return $info ? $info[0] : $info; } /** * 上传文件 * @param 文件信息数组 $files ,通常是 $_FILES数组 */ public function upload($files='') { if('' === $files){ $files = $_FILES; } if(empty($files)){ $this->error = '没有上传的文件!'; return false; } /* 检测上传根目录 */ if(!$this->uploader->checkRootPath($this->rootPath)){ $this->error = $this->uploader->getError(); return false; } /* 检查上传目录 */ if(!$this->uploader->checkSavePath($this->savePath)){ $this->error = $this->uploader->getError(); return false; } /* 逐个检测并上传文件 */ $info = array(); if(function_exists('finfo_open')){ $finfo = finfo_open ( FILEINFO_MIME_TYPE ); } // 对上传文件数组信息处理 $files = $this->dealFiles($files); foreach ($files as $key => $file) { $file['name'] = strip_tags($file['name']); if(!isset($file['key'])) $file['key'] = $key; /* 通过扩展获取文件类型,可解决FLASH上传$FILES数组返回文件类型错误的问题 */ if(isset($finfo)){ $file['type'] = finfo_file ( $finfo , $file['tmp_name'] ); } /* 获取上传文件后缀,允许上传无后缀文件 */ $file['ext'] = pathinfo($file['name'], PATHINFO_EXTENSION); /* 文件上传检测 */ if (!$this->check($file)){ continue; } /* 获取文件hash */ if($this->hash){ $file['md5'] = md5_file($file['tmp_name']); $file['sha1'] = sha1_file($file['tmp_name']); } /* 调用回调函数检测文件是否存在 */ $data = call_user_func($this->callback, $file); if( $this->callback && $data ){ if ( file_exists('.'.$data['path']) ) { $info[$key] = $data; continue; }elseif($this->removeTrash){ call_user_func($this->removeTrash,$data);//删除垃圾据 } } /* 生成保存文件名 */ $savename = $this->getSaveName($file); if(false == $savename){ continue; } else { $file['savename'] = $savename; } /* 检测并创建子目录 */ $subpath = $this->getSubPath($file['name']); if(false === $subpath){ continue; } else { $file['savepath'] = $this->savePath . $subpath; } /* 对图像文件进行严格检测 */ $ext = strtolower($file['ext']); if(in_array($ext, array('gif','jpg','jpeg','bmp','png','swf'))) { $imginfo = getimagesize($file['tmp_name']); if(empty($imginfo) || ($ext == 'gif' && empty($imginfo['bits']))){ $this->error = '非法图像文件!'; continue; } } /* 保存文件 并记录保存成功的文件 */ if ($this->uploader->save($file,$this->replace)) { unset($file['error'], $file['tmp_name']); $info[$key] = $file; } else { $this->error = $this->uploader->getError(); } } if(isset($finfo)){ finfo_close($finfo); } return empty($info) ? false : $info; } /** * 转换上传文件数组变量为正确的方式 * @access private * @param array $files 上传的文件变量 * @return array */ private function dealFiles($files) { $fileArray = array(); $n = 0; foreach ($files as $key=>$file){ if(is_array($file['name'])) { $keys = array_keys($file); $count = count($file['name']); for ($i=0; $i<$count; $i++) { $fileArray[$n]['key'] = $key; foreach ($keys as $_key){ $fileArray[$n][$_key] = $file[$_key][$i]; } $n++; } }else{ $fileArray = $files; break; } } return $fileArray; } /** * 设置上传驱动 * @param string $driver 驱动名称 * @param array $config 驱动配置 */ private function setDriver($driver = null, $config = null){ $driver = $driver ? : ($this->driver ? : C('FILE_UPLOAD_TYPE')); $config = $config ? : ($this->driverConfig ? : C('UPLOAD_TYPE_CONFIG')); $class = strpos($driver,'\\')? $driver : 'Think\\Upload\\Driver\\'.ucfirst(strtolower($driver)); $this->uploader = new $class($config); if(!$this->uploader){ E("不存在上传驱动:{$name}"); } } /** * 检查上传的文件 * @param array $file 文件信息 */ private function check($file) { /* 文件上传失败,捕获错误代码 */ if ($file['error']) { $this->error($file['error']); return false; } /* 无效上传 */ if (empty($file['name'])){ $this->error = '未知上传错误!'; } /* 检查是否合法上传 */ if (!is_uploaded_file($file['tmp_name'])) { $this->error = '非法上传文件!'; return false; } /* 检查文件大小 */ if (!$this->checkSize($file['size'])) { $this->error = '上传文件大小不符!'; return false; } /* 检查文件Mime类型 */ //TODO:FLASH上传的文件获取到的mime类型都为application/octet-stream if (!$this->checkMime($file['type'])) { $this->error = '上传文件MIME类型不允许!'; return false; } /* 检查文件后缀 */ if (!$this->checkExt($file['ext'])) { $this->error = '上传文件后缀不允许'; return false; } /* 通过检测 */ return true; } /** * 获取错误代码信息 * @param string $errorNo 错误号 */ private function error($errorNo) { switch ($errorNo) { case 1: $this->error = '上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值!'; break; case 2: $this->error = '上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值!'; break; case 3: $this->error = '文件只有部分被上传!'; break; case 4: $this->error = '没有文件被上传!'; break; case 6: $this->error = '找不到临时文件夹!'; break; case 7: $this->error = '文件写入失败!'; break; default: $this->error = '未知上传错误!'; } } /** * 检查文件大小是否合法 * @param integer $size 数据 */ private function checkSize($size) { return !($size > $this->maxSize) || (0 == $this->maxSize); } /** * 检查上传的文件MIME类型是否合法 * @param string $mime 数据 */ private function checkMime($mime) { return empty($this->config['mimes']) ? true : in_array(strtolower($mime), $this->mimes); } /** * 检查上传的文件后缀是否合法 * @param string $ext 后缀 */ private function checkExt($ext) { return empty($this->config['exts']) ? true : in_array(strtolower($ext), $this->exts); } /** * 根据上传文件命名规则取得保存文件名 * @param string $file 文件信息 */ private function getSaveName($file) { $rule = $this->saveName; if (empty($rule)) { //保持文件名不变 /* 解决pathinfo中文文件名BUG */ $filename = substr(pathinfo("_{$file['name']}", PATHINFO_FILENAME), 1); $savename = $filename; } else { $savename = $this->getName($rule, $file['name']); if(empty($savename)){ $this->error = '文件命名规则错误!'; return false; } } /* 文件保存后缀,支持强制更改文件后缀 */ $ext = empty($this->config['saveExt']) ? $file['ext'] : $this->saveExt; return $savename . '.' . $ext; } /** * 获取子目录的名称 * @param array $file 上传的文件信息 */ private function getSubPath($filename) { $subpath = ''; $rule = $this->subName; if ($this->autoSub && !empty($rule)) { $subpath = $this->getName($rule, $filename) . '/'; if(!empty($subpath) && !$this->uploader->mkdir($this->savePath . $subpath)){ $this->error = $this->uploader->getError(); return false; } } return $subpath; } /** * 根据指定的规则获取文件或目录名称 * @param array $rule 规则 * @param string $filename 原文件名 * @return string 文件或目录名称 */ private function getName($rule, $filename){ $name = ''; if(is_array($rule)){ //数组规则 $func = $rule[0]; $param = (array)$rule[1]; foreach ($param as &$value) { $value = str_replace('__FILE__', $filename, $value); } $name = call_user_func_array($func, $param); } elseif (is_string($rule)){ //字符串规则 if(function_exists($rule)){ $name = call_user_func($rule); } else { $name = $rule; } } return $name; } }
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