<?php

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[1] Fix | Delete

//Bytes/Kb/MB/GB/TB/EB

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/**

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* 转换字节大小

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* @param number $size

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* @return number

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*/

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function transByte($size) {

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$arr = array ("B", "KB", "MB", "GB", "TB", "EB" );

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$i = 0;

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while ( $size >= 1024 ) {

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$size /= 1024;

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$i ++;

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}

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return round ( $size, 2 ) . $arr [$i];

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}

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/**

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* 创建文件

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* @param string $filename

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* @return string

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*/

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function createFile($filename) {

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//file/1.txt

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//验证文件名的合法性,是否包含/,*,<>,?,|

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$pattern = "/[\/,\*,<>,\?\|]/";

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if (! preg_match ( $pattern, basename ( $filename ) )) {

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//检测当前目录下是否存在同名文件

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if (! file_exists ( $filename )) {

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//通过touch($filename)来创建

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if (touch ( $filename )) {

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return "文件创建成功";

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} else {

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return "文件创建失败";

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}

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} else {

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return "文件已存在，请重命名后创建";

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}

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} else {

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return "非法文件名";

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}

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}

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/**

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* 重命名文件

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* @param string $oldname

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* @param string $newname

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* @return string

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*/

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function renameFile($oldname,$newname){

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// echo $oldname,$newname;

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//验证文件名是否合法

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if(checkFilename($newname)){

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//检测当前目录下是否存在同名文件

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$path=dirname($oldname);

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if(!file_exists($path."/".$newname)){

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//进行重命名

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if(rename($oldname,$path."/".$newname)){

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return "重命名成功";

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}else{

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return "重命名失败";

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}

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}else{

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return "存在同名文件，请重新命名";

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}

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}else{

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return "非法文件名";

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}

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}

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/**

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*检测文件名是否合法

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* @param string $filename

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* @return boolean

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*/

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function checkFilename($filename){

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$pattern = "/[\/,\*,<>,\?\|]/";

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if (preg_match ( $pattern, $filename )) {

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return false;

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}else{

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return true;

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}

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}

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/**

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* 删除文件

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* @param string $filename

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* @return string

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*/

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function delFile($filename){

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if(unlink($filename)){

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$mes="文件删除成功";

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}else{

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$mes="文件删除失败";

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}

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return $mes;

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}

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/**

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* 下载文件操作

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* @param string $filename

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*/

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function downFile($filename){

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header("content-disposition:attachment;filename=".basename($filename));

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header("content-length:".filesize($filename));

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readfile($filename);

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}

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/**

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* 复制文件

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* @param string $filename

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* @param string $dstname

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* @return string

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*/

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function copyFile($filename,$dstname){

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if(file_exists($dstname)){

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if(!file_exists($dstname."/".basename($filename))){

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if(copy($filename,$dstname."/".basename($filename))){

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$mes="文件复制成功";

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}else{

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$mes="文件复制失败";

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}

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}else{

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$mes="存在同名文件";

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}

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}else{

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$mes="目标目录不存在";

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}

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return $mes;

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}

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function cutFile($filename,$dstname){

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if(file_exists($dstname)){

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if(!file_exists($dstname."/".basename($filename))){

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if(rename($filename,$dstname."/".basename($filename))){

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$mes="文件剪切成功";

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}else{

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$mes="文件剪切失败";

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}

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}else{

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$mes="存在同名文件";

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}

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}else{

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$mes="目标目录不存在";

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}

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return $mes;

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}

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/**

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* 上传文件

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* @param array $fileInfo

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* @param string $path

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* @param array $allowExt

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* @param int $maxSize

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* @return string

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*/

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function uploadFile($fileInfo,$path,$allowExt=array("gif","jpeg","jpg","png","txt"),$maxSize=10485760){

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//判断错误号

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if($fileInfo['error']==UPLOAD_ERR_OK){

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//文件是否是通过HTTP POST方式上传上来的

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if(is_uploaded_file($fileInfo['tmp_name'])){

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//上传文件的文件名，只允许上传jpeg|jpg、png、gif、txt的文件

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//$allowExt=array("gif","jpeg","jpg","png","txt");

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$ext=getExt($fileInfo['name']);

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$uniqid=getUniqidName();

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$destination=$path."/".pathinfo($fileInfo['name'],PATHINFO_FILENAME)."_".$uniqid.".".$ext;

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if(in_array($ext,$allowExt)){

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if($fileInfo['size']<=$maxSize){

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if(move_uploaded_file($fileInfo['tmp_name'], $destination)){

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$mes="文件上传成功";

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}else{

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$mes="文件移动失败";

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}

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}else{

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$mes="文件过大";

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}

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}else{

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$mes="非法文件类型";

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}

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}else{

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$mes="文件不是通过HTTP POST方式上传上来的";

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}

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}else{

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switch($fileInfo['error']){

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case 1:

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$mes="超过了配置文件的大小";

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break;

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case 2:

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$mes="超过了表单允许接收数据的大小";

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break;

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case 3:

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$mes="文件部分被上传";

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break;

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case 4:

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$mes="没有文件被上传";

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break;

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}

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}

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return $mes;

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}

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