本文实例讲述了PHP封装的多文件上传类实例与用法。分享给大家供大家参考,具体如下:
user_post_file = $file;
$this->save_file_path = $path;
$this->max_file_size = $size; //如果用户不填写文件大小,则默认为2M.
if ($type != '')
$this->allow_type = $type;
}
function upload() {
for ($i = 0; $i < count($this->user_post_file['name']); $i++) {
//如果当前文件上传功能,则执行下一步。
if ($this->user_post_file['error'][$i] == 0) {
//取当前文件名、临时文件名、大小、扩展名,后面将用到。
$name = $this->user_post_file['name'][$i];
$tmpname = $this->user_post_file['tmp_name'][$i];
$size = $this->user_post_file['size'][$i];
$mime_type = $this->user_post_file['type'][$i];
$type = $this->getFileExt($this->user_post_file['name'][$i]);
//检测当前上传文件大小是否合法。
if (!$this->checkSize($size)) {
$this->last_error = "The file size is too big. File name is: ".$name;
$this->halt($this->last_error);
continue;
}
//检测当前上传文件扩展名是否合法。
if (!$this->checkType($type)) {
$this->last_error = "Unallowable file type: .".$type." File name is: ".$name;
$this->halt($this->last_error);
continue;
}
//检测当前上传文件是否非法提交。
if(!is_uploaded_file($tmpname)) {
$this->last_error = "Invalid post file method. File name is: ".$name;
$this->halt($this->last_error);
continue;
}
//移动文件后,重命名文件用。
$basename = $this->getbaseName($name, ".".$type);
//移动后的文件名
$saveas = $basename."-".time().".".$type;
//组合新文件名再存到指定目录下,格式:存储路径 + 文件名 + 时间 + 扩展名
$this->final_file_path = $this->save_file_path."/".$saveas;
if(!move_uploaded_file($tmpname, $this->final_file_path)) {
$this->last_error = $this->user_post_file['error'][$i];
$this->halt($this->last_error);
continue;
}
//存储当前文件的有关信息,以便其它程序调用。
$this->save_info[] = array("name" => $name, "type" => $type,
"mime_type" => $mime_type,
"size" => $size, "saveas" => $saveas,
"path" => $this->final_file_path);
}
}
return count($this->save_info); //返回上传成功的文件数目
}
function getSaveInfo() {
return $this->save_info;
}
function checkSize($size) {
if ($size > $this->max_file_size) {
return false;
}
else {
return true;
}
}
function checkType($extension) {
foreach ($this->allow_type as $type) {
if (strcasecmp($extension , $type) == 0)
return true;
}
return false;
}
function halt($msg) {
printf(" %s
n", $msg);
}
function getFileExt($filename) {
$stuff = pathinfo($filename);
return $stuff['extension'];
}
function getbaseName($filename, $type) {
$basename = basename($filename, $type);
return $basename;
}
}
?>
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