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PHP文件上传类(支持单文件和多文件)
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<?php | |
/** | |
* Created by PhpStorm. | |
* User: wujunze | |
* Blog: https://wujunze.com/ | |
* Date: 2016/6/25 | |
* Time: 18:44 | |
*/ | |
/** | |
* PHP通用文件上传类 | |
* | |
* 支持单文件和多文件上传 | |
*/ | |
class FileUpload{ | |
//要配置的内容 | |
private $path = "../img/"; | |
private $allowtype = array('jpg', 'gif', 'png'); | |
private $maxsize = 1000000; | |
private $israndname = true; | |
private $originName; | |
private $tmpFileName; | |
private $fileType; | |
private $fileSize; | |
private $newFileName; | |
private $errorNum = 0; | |
private $errorMess = ""; | |
/** | |
* 用于设置成员属性($path, $allowtype, $maxsize, $israndname) | |
* 可以通过连贯操作一次设置多个属性值 | |
* @param $key 成员属性(不区分大小写) | |
* @param $val 为成员属性设置的值 | |
* @return object 返回自己对象$this, 可以用于连贯操作 | |
*/ | |
function set($key, $val){ | |
$key = strtolower($key); | |
if (array_key_exists($key, get_class_vars(get_class($this)))){ | |
$this->setOption($key, $val); | |
} | |
return $this; | |
} | |
/** | |
* 调用该方法上传文件 | |
* Enter description here ... | |
* @param $fileField 上传文件的表单名称 | |
*/ | |
function upload($fileField){ | |
$return = true; | |
if (!$this->checkFilePath()){ | |
$this->errorMess = $this->getError(); | |
return false; | |
} | |
//将文件上传的信息取出赋给变量 | |
$name = $_FILES[$fileField]['name']; | |
$tmp_name = $_FILES[$fileField]['tmp_name']; | |
$size = $_FILES[$fileField]['size']; | |
$error = $_FILES[$fileField]['error']; | |
if (is_array($name)){ | |
$errors = array(); | |
//多个文件上传则循环处理,这个循环只有检查上传文件的作用,并没有真正上传 | |
for ($i = 0; $i < count($name); $i++) { | |
if ($this->setFiles($name[$i], $tmp_name[$i], $size[$i], $error[$i])) { | |
if (!$this->checkFileSize() || !$this->checkFileType()){ | |
$errors[] = $this->getError(); | |
$return = false; | |
} | |
}else{ | |
$errors[] = $this->getError(); | |
$return = false; | |
} | |
//如果有问题,则重新初始化属性 | |
if (!$return){ | |
$this->setFiles(); | |
} | |
} | |
if ($return) { | |
//存放所有上传后文件名的变量数组 | |
$fileNames = array(); | |
//如果上传的多个文件都是合法的,则通过循环向服务器上传文件 | |
for ($i = 0; $i < count($name); $i++) { | |
if ($this->setFiles($name[$i], $tmp_name[$i], $size[$i], $error[$i])){ | |
$this->setNewFileName(); | |
if (!$this->copyFile()){ | |
$errors[] = $this->getError(); | |
$return = false; | |
} | |
$fileNames[] = $this->newFileName; | |
} | |
} | |
$this->newFileName = $fileNames; | |
} | |
$this->errorMess = $errors; | |
return $return; | |
}else{ | |
//设置文件信息 | |
if ($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; | |
} | |
//获取上传后的文件名称 | |
public function getFileName(){ | |
return $this->newFileName; | |
} | |
//上传失败后,调用该方法则返回,上传出错信息 | |
public function getErrorMsg(){ | |
return $this->errorMess; | |
} | |
//设置上传出错信息 | |
public function getError(){ | |
$str = "上传文件<font color='red'>{$this->originName}</font>时出错:"; | |
switch ($this->errorNum) { | |
case 4: | |
$str.= "没有文件被上传"; | |
break; | |
case 3: | |
$str.= "文件只有部分被上传"; | |
break; | |
case 2: | |
$str.= "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 1: | |
$str.= "上传的文件超过了php.ini中upload_max_filesize选项限制的值"; | |
break; | |
case -1: | |
$str.= "未允许的类型"; | |
break; | |
case -2: | |
$str.= "文件过大, 上传的文件夹不能超过{$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 .= "未知错误"; | |
} | |
return $str."<br>"; | |
} | |
//设置和$_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); | |
$aryStr = explode(".", $name); | |
$this->setOption("fileType", strtolower($aryStr[count($aryStr)-1])); | |
$this->setOption("fileSize", $size); | |
return true; | |
} | |
//为单个成员属性设置值 | |
private function setOption($key, $val){ | |
$this->$key = $val; | |
} | |
//设置上传后的文件名称 | |
private function setNewFileName(){ | |
if ($this->israndname) { | |
$this->setOption('newFileName', $this->proRandName()); | |
}else{ | |
$this->setOption('newFileName', $this->originName); | |
} | |
} | |
//检查上传的文件是否是合法的类型 | |
private function checkFileType(){ | |
if (in_array(strtolower($this->fileType), $this->allowtype)) { | |
return true; | |
}else{ | |
$this->setOption('errorNum', -1); | |
return false; | |
} | |
} | |
//检查上传的文件是否是允许的大小 | |
private function checkFileSize(){ | |
if ($this->fileSize > $this->maxsize) { | |
$this->setOption('errorNum', -5); | |
return false; | |
}else{ | |
return true; | |
} | |
} | |
//检查是否有存放上传文件的目录 | |
private function checkFilePath(){ | |
if (empty($this->path)) { | |
$this->setOption('errorNum', -5); | |
return false; | |
} | |
if (!file_exists($this->path) || !is_writable($this->path)) { | |
if (!@mkdir($this->path, 0755)) { | |
$this->setOption('errorNum', -4); | |
return false; | |
} | |
} | |
return true; | |
} | |
//设置随机文件名 | |
private function proRandName(){ | |
$fileName = date('YmdHis')."_".rand(100,999); | |
return $fileName.'.'.$this->fileType; | |
} | |
//复制上传文件到指定的位置 | |
private function copyFile(){ | |
if (!$this->errorNum) { | |
$path = rtrim($this->path, '/').'/'; | |
$path.= $this->newFileName; | |
if (@move_uploaded_file($this->tmpFileName, $path)) { | |
return true; | |
}else{ | |
$this->setOption('errorNum', -3); | |
return false; | |
} | |
}else{ | |
return false; | |
} | |
} | |
} |
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