PHP设计超级好用的文件上传处理类一 (37),_PHP教程

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Release: 2016-07-13 09:52:21
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PHP设计超级好用的文件上传处理类一 (37),

php class FileUpload { private $filepath; //指定上传文件保存的路径 private $allowtype=array('gif', 'jpg', 'png', 'jpeg'); //充许上传文件的类型 private $maxsize=1000000; //允上传文件的最大长度 1M private $israndname=true; //是否随机重命名, true false不随机,使用原文件名 private $originName; //源文件名称 private $tmpFileName; //临时文件名 private $fileType; //文件类型 private $fileSize; //文件大小 private $newFileName; //新文件名 private $errorNum=0; //错误号 private $errorMess=""; //用来提供错误报告 //用于对上传文件初使化 //1. 指定上传路径, 2,充许的类型, 3,限制大小, 4,是否使用随机文件名称 //让用户可以不用按位置传参数,后面参数给值不用将前几个参数也提供值 function __construct($options=array()){ foreach($options as $key=>$val){ $key=strtolower($key); //查看用户参数中数组的下标是否和成员属性名相同 if(!in_array($key,get_class_vars(get_class($this)))){ continue; } $this->setOption($key, $val); } } private function getError(){ $str="上传文件{$this->originName}时出错:"; switch($this->errorNum){ case 4: $str .= "没有文件被上传"; break; case 3: $str .= "文件只被部分上传"; break; case 2: $str .= "上传文件超过了HTML表单中MAX_FILE_SIZE选项指定的值"; break; case 1: $str .= "上传文件超过了php.ini 中upload_max_filesize选项的值"; break; case -1: $str .= "末充许的类型"; break; case -2: $str .= "文件过大,上传文件不能超过{$this->maxSize}个字节"; break; case -3: $str .= "上传失败"; break; case -4: $str .= "建立存放上传文件目录失败,请重新指定上传目录"; break; case -5: $str .= "必须指定上传文件的路径"; break; default: $str .= "末知错误"; } return $str.'
'; } //用来检查文件上传路径 private function checkFilePath(){ if(empty($this->filepath)) { $this->setOption('errorNum', -5); return false; } if(!file_exists($this->filepath) || !is_writable($this->filepath)){ if(!@mkdir($this->filepath, 0755)){ $this->setOption('errorNum', -4); return false; } } return true; } //用来检查文件上传的大小 private function checkFileSize() { if($this->fileSize > $this->maxsize){ $this->setOPtion('errorNum', '-2'); return false; }else{ return true; } } //用于检查文件上传类型 private function checkFileType() { if(in_array(strtolower($this->fileType), $this->allowtype)) { return true; }else{ $this->setOption('errorNum', -1); return false; } } //设置上传后的文件名称 private function setNewFileName(){ if($this->israndname){ $this->setOption('newFileName', $this->proRandName()); } else { $this->setOption('newFileName', $this->originName); } } //设置随机文件名称 private function proRandName(){ $fileName=date("YmdHis").rand(100,999); return $fileName.'.'.$this->fileType; } private function setOption($key, $val){ $this->$key=$val; } //用来上传一个文件 function uploadFile($fileField){ $return=true; //检查文件上传路径 if(!$this->checkFilePath()){ $this->errorMess=$this->getError(); return false; } $name=$_FILES[$fileField]['name']; $tmp_name=$_FILES[$fileField]['tmp_name']; $size=$_FILES[$fileField]['size']; $error=$_FILES[$fileField]['error']; if(is_Array($name)){ $errors=array(); for($i=0; $i){ if($this->setFiles($name[$i], $tmp_name[$i], $size[$i], $error[$i])){ if(!$this->checkFileSize() || !$this->checkFileType()){ $errors[]=$this->getError(); $return=false; } }else{ $error[]=$this->getError(); $return=false; } if(!$return) $this->setFiles(); } if($return){ $fileNames=array(); for($i=0; $i){ if($this->setFiles($name[$i], $tmp_name[$i], $size[$i], $error[$i])){ $this->setNewFileName(); if(!$this->copyFile()){ $errors=$this->getError(); $return=false; }else{ $fileNames[]=$this->newFileName; } } } $this->newFileName=$fileNames; } $this->errorMess=$errors; return $return; } else { if($this->setFiles($name, $tmp_name, $size, $error)){ if($this->checkFileSize() && $this->checkFileType()){ $this->setNewFileName(); if($this->copyFile()){ return true; }else{ $return=false; } }else{ $return=false; } }else{ $return=false; } if(!$return) $this->errorMess=$this->getError(); return $return; } } private function copyFile(){ if(!$this->errorNum){ $filepath=rtrim($this->filepath, '/').'/'; $filepath.=$this->newFileName; if(@move_uploaded_file($this->tmpFileName, $filepath)) { return true; }else{ $this->setOption('errorNum', -3); return false; } }else{ return false; } } //设置和$_FILES有关的内容 private function setFiles($name="", $tmp_name='', $size=0, $error=0){ $this->setOption('errorNum', $error); if($error){ return false; } $this->setOption('originName', $name); $this->setOption('tmpFileName', $tmp_name); $arrStr=explode('.', $name); $this->setOption('fileType', strtolower($arrStr[count($arrStr)-1])); $this->setOption('fileSize', $size); return true; } //用于获取上传后文件的文件名 function getNewFileName(){ return $this->newFileName; } //上传如果失败,则调用这个方法,就可以查看错误报告 function getErrorMsg() { return $this->errorMess; } }
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