<?php
session_start();
$url='http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];
$save_dir="images";
$file_current_dir=dirname(__FILE__).'/'.$save_dir;
$filepath='http://'.$_SERVER['HTTP_HOST'].'/'.$save_dir;
//$filepath=dirname($url).'/'.$save_dir; 这个是支持子目录的
/**
* [file_upload 文件上传函数，支持单文件，多文件]
* Author: 程威明
* @param string $name input表单中的name
* @param string $save_dir 文件保存路径，相对于当前目录
* @param array $allow_suffix 允许上传的文件后缀
* @return array array() {
* ["status"]=> 全部上传成功为true，全部上传失败为false，部分成功为成功数量
* ["path"]=>array() {已成功的文件路径}
* ["error"]=>array() {失败信息}
* }
*/
function files_upload($name="photo",$filename='file',$save_dir="images",$allow_suffix=array('jpg','jpeg','gif','png'),$random_keys='A')
{
//如果是单文件上传，改变数组结构
if(!is_array($_FILES[$name]['name'])){
$list = array();
foreach($_FILES[$name] as $k=>$v){
$list[$k] = array($v);
}
$_FILES[$name] = $list;
}
$response = array();
$response['status'] = array();
$response['path'] = array();
$response['error'] = array();
//拼接保存目录
$save_dir = './'.trim(trim($save_dir,'.'),'/').'/';
//判断保存目录是否存在
if(!file_exists($save_dir))
{
//不存在则创建
if(false==mkdir($save_dir,0777,true))
{
$response['status'] = false;
$response['error'][] = '文件保存路径错误,路径 "'.$save_dir.'" 创建失败';
}
}
$num = count($_FILES[$name]['tmp_name']);
$success = 0;
//循环处理上传
for($i=0;$i <$num;$i++)
{
//判断是不是post上传
if(!is_uploaded_file($_FILES[$name]['tmp_name'][$i]))
{
$response['error'][] = '非法上传，文件 "'.$_FILES[$name]['name'][$i].'" 不是post获得的';
continue;
}
//判断错误
if($_FILES[$name]['error'][$i]>0)
{
$response['error'][] = '文件 "'.$_FILES[$name]['name'][$i].'" 上传错误,error下标为 "'.$_FILES[$name]['error'][$i].'"';
continue;
}
//获取文件后缀
$suffix = ltrim(strrchr($_FILES[$name]['name'][$i],'.'),'.');
//判断后缀是否是允许上传的格式
if(!in_array($suffix,$allow_suffix))
{
$response['error'][] = 'file "'.$_FILES[$name]['name'][$i].'" types that are not allowed to upload ';
continue;
}
if(empty($_SESSION['array'][$filename])) {
$_SESSION['array'][$filename]=array("A"=>"A","B"=>"B","C"=>"C","D"=>"D","E"=>"E",'F'=>"F",'G'=>"G",'H'=>"H",'I'=>"I",'J'=>"J",'K'=>"K");
}
$random_keys=array_shift($_SESSION['array'][$filename]);
unset($_SESSION['array'][$filename][$random_keys]);
//得到上传后文件名
$new_file_name =$filename.$random_keys.'.'.$suffix;
//拼接完整路径
$new_path = $save_dir.$new_file_name;
//上传文件 把tmp文件移动到保存目录中
if(!move_uploaded_file($_FILES[$name]['tmp_name'][$i],$new_path))
{
$response['error'][] = '文件 "'.$_FILES[$name]['name'][$i].'" 从临时文件夹移动到保存目录时发送错误';
continue;
}
//返回由图片文件路径组成的数组
$response['path'][] =$save_dir.$new_file_name;
$success++;
}
if(0==$success){
$success = false;
}elseif($success==$num){
$success = true;
}
$response['status'] = $success;
return $response;
}
if(empty($_SESSION['filename'])){
$_SESSION['filename']='';
}
//文件改名
if(@$_POST['action']=='rename')
{
$oldname=$_POST['oldname'];
//$oldname=str_replace(substr($oldname,strrpos($oldname,'.')),'',$oldname);
$oldname=$save_dir."/".$oldname;
$newname=$save_dir."/".$_POST['newfilename'].'.'.$_POST['ext'];
$result=rename($oldname,$newname);
if($result==true){
header('Location: '.$url);
}
}
//文件删除
if(@$_POST['action']=='del')
{
$result=0;
$file = $save_dir."/".$_POST['filename'];
echo $file;
$result = @unlink($file) or die('dsd');;
if ($result == true) {
$result=1;
}
echo $result;
}
if(@$_POST['action']=='upload'){
$filename=$_POST['filename'];
$_SESSION['filename']=$filename;
$aa=files_upload('file',$filename,'images',array('jpg','jpeg','gif','png'),$random_keys);
if($aa['status']==true){
header('Location: '.$url);
} else {
echo $aa['error'][0];
}
} else {
$dir = $file_current_dir;
// Open a known directory, and proceed to read its contents
if (is_dir($dir)) {
if ($dh = opendir($dir)) {
$i=0;
while (($file = readdir($dh)) !== false) {
$size = intval((filesize($dir.'/'.$file)/1000)).'k';
list($filesname,$kzm)=explode(".",$file);//获取扩展名
if($kzm=="gif" or $kzm=="jpg" or $kzm=="JPG" or $kzm=="png") { //文件过滤 ?>
filename: <?php echo $file;?> <?php echo $size;?> <img src="<?php echo $filepath.'/'.$file ;?> " width="50px" height="50px"> <?php echo $filepath.'/'.$file;?> <a onclick="return rename('<?php echo $i;?>','<?php echo $file;?>',)" href='#'>rename</a>
<form method="post" id="form_<?php echo $i;?>" action="1.php" style="display:none">
<input type="text" name="newfilename" id="newfilename" >
<input type="hidden" name="oldname" id="oldname" value="<?php echo $file;?>" >
<input type="hidden" name="action" id="action" value="rename">
<input type="hidden" name="ext" id="ext" value="<?php echo $kzm;?>">
<input type="submit" name="submit" value="Submit" />
</form>
<a onclick="return deldel('<?php echo $file;?>')" href='#' >del</a> <br>
<?php
$i++;
}
}
closedir($dh);
}
}
?>
<html>
<body>
<br>
<br>
<br>
<form action="1.php" method="post" enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" />
<br />
<label for="file">name</label>
<input type="text" name="filename" id="filename" value="<?php echo $_SESSION['filename'];?>">
<input type="hidden" name="action" value="upload">
<br />
<input type="submit" name="submit" value="Submit" />
</form>
</body>
</html>
<?php
}
?>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
<script>
function rename(formid,filename)
{
$("#form_"+formid).toggle();
}
function deldel(filename)
{
var del='del';
if(confirm('confirm del')){
$.ajax({
type:'post',
url:'<?php echo $url;?>',
data: {action:del, filename:filename},
success:function(data){
alert('del success');
location.reload();
},
error:function(){
alert('del fail，check file mod');
}
});
}
}
</script>
