mirror of https://github.com/iAJue/Fantasy-field
145 lines
3.7 KiB
PHP
145 lines
3.7 KiB
PHP
<?php
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namespace framework\libraries;
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/**
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* 文件上传类
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*/
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final class Upload{
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public $dir, $allow, $message=array();
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private $files=array();
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/**
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* 初始化类
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* @param string $name 表单名称
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* @param string $dir 上传文件保存目录
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* @param string $allow 允许上传类型
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*/
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public function __construct($name, $dir, $allow='jpg,png,gif,bmp,jpeg,txt'){
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if(isset($_FILES[$name])){
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foreach($_FILES[$name] as $key => $value){
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$this->files[$key] = (array)$value;
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}
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$this->dir = rtrim($dir, '/') . '/';
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$this->allow = explode(',', strtolower($allow));
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(is_dir($this->dir) || mkdir($dir, 0777, true)) || $this->message = -1;
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}else{
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$this->message = 8; //初始化失败
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}
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}
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/**
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* 运行
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* @param integer $maxSize 最大允许上传字节数
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* @param boolean $randName 随机文件名
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* @param boolean $name 当不随机文件名时指定的文件名
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* @param boolean $cover 覆盖原有文件
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* @return string/array 处理结果
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*/
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public function run($maxSize=1000000, $randName=true, $name='', $cover=true){
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//检查初始化
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if($this->message===8 || $this->message==-1)
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return self::getErrorText($this->message);
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$count = count($this->files['name']);
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for($i=0; $i<$count; $i++){
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//有效检查
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if(!$this->files['tmp_name'][$i])
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continue;
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//变量初始
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$arr = array(
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'name' => $this->files['name'][$i],
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'type' => $this->files['type'][$i],
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'tmp_name' => $this->files['tmp_name'][$i],
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'error' => $this->files['error'][$i],
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'size' => $this->files['size'][$i]
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);
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$info = array(
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'name' => $arr['name'],
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'type' => $arr['type'],
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'size' => $arr['size']
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);
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$fileExt = strtolower(getFileExt($arr['name']));
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//检查大小
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if($arr['size'] > $maxSize)
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$arr['error'] = -2;
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//检查类型
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if(!in_array($fileExt, $this->allow))
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$arr['error'] = -3;
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//检查错误
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if($arr['error'] != 0){
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$info['error'] = $arr['error'];
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$info['errorText'] = self::getErrorText($info['error']);
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$this->message[] = $info;
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is_file($arr['tmp_name']) && @unlink($arr['tmp_name']);
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continue;
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}
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//设置名称
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$info['name'] = $randName ? \getRandName('.'.$fileExt) : $name . '.' . $fileExt;
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//检查覆盖
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if(!is_file($this->dir . $info['name']) || $cover)
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move_uploaded_file($arr['tmp_name'], $this->dir . $info['name']) || $info['error'] = -4;
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//添加日志
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$info['error'] = isset($info['error']) ? $info['error'] : 0;
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$info['errorText'] = self::getErrorText($info['error']);
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$this->message[] = $info;
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//垃圾回收
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if($info['error']===0 && is_file($arr['tmp_name']))
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@unlink($arr['tmp_name']);
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}
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//返回结果
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return $this->message;
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}
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/**
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* 获取错误信息文本
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* @param [type] $error 错误ID
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* @return string 文本信息
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*/
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public static function getErrorText($error){
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switch($error){
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case -4:
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return '文件移动失败(可能因为出现中文文件名, 建议使用英文或自动生成)';
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case -3:
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return '上传类型不被允许';
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case -2:
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return '文件大小超出设置范围';
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case -1:
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return '上传目录无效，请重新指定';
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case 0:
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return '上传成功';
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case 1:
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return '上传文件大小超过 php.ini 中 upload_max_filesize 选项限制值';
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case 2:
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return '上传文件大小超过 HTML 表单中 MAX_FILE_SIZE 选项指定值';
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case 3:
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return '文件上传不完整';
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case 4:
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return '文件没有被上传';
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case 6:
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return 'PHP找不到临时文件夹';
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case 7:
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return 'PHP文件写入失败';
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case 8:
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return '上传表单名称指定错误';
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default:
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return '未知错误';
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}
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}
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}
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