Multi-File Upload class Code _php tutorial

Real support for single-file and multi-File upload class code, fixed $_files[$field[' name '] $field cannot use the variable can only and the form file name name= "userfile" consistent disadvantage $_ files['userfile' [' name '], hereThe filename in the file can be arbitrarily taken.

//index.htm
1. Single File Upload

2, multi-file upload

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//upload.php

Class file_upload{
Public $upload _path= './upload/';//The path of the uploaded file
Public $allow _type=array ();//file types allowed for uploading
Public $max _size= ' 20480 ';//maximum file size allowed
Public $overwrite Whether =false;//is set to overwrite mode
Public $renamed =false;//whether to use the name of the uploaded file directly or the system to automatically name

/**
* Private Variables
*/
Private $upload _file=array ();//save information for uploading successful files
Private $upload _file_num=0;//number of successful uploads
Private $SUCC _upload_file=array ();//successfully saved file information
/**
* Constructor
*
* @param string $upload _path
* @param string $allow _type
* @param string $max _size
*/
Public function __construct ($upload _path= './upload/', $allow _type= ' jpg|bmp|png|gif|jpeg ', $max _size= ' 204800 ')
{
$this->set_upload_path ($upload _path);
$this->set_allow_type ($allow _type);
$this->max_size= $max _size;
$this->get_upload_files ();
}
/**
* Set the upload path and determine
*
* @param string $path
*/
Public Function Set_upload_path ($path)
{
if (file_exists ($path)) {
if (is_writeable ($path)) {
$this->upload_path= $path;
}else{
if (@chmod ($path, ' 0666 '))
$this->upload_path= $path;
}
}else{
if (@mkdir ($path, ' 0666 ')) {
$this->upload_path= $path;
}
}
}
Set Upload file type
Public Function Set_allow_type ($types) {
$this->allow_type=explode ("|", $types);
}
Uploading files
Public Function Get_upload_files ()
{
foreach ($_files as $key = $field)
{
$this->get_upload_files_detial ($key);
}
}
Uploading the file data into the array
Public Function get_upload_files_detial ($field) {
if (Is_array ($_files["$field" [' Name ']))
{
for ($i =0; $i <>
{
if (0==$_files[$field [' Error '] [$i])
{
$this->upload_file[$this->upload_file_num][' name ']=$_files[$field [' name '] [$i];
$this->upload_file[$this->upload_file_num][' type ']=$_files[$field [' type '] [$i];
$this->upload_file[$this->upload_file_num][' size ']=$_files[$field [' Size '] [$i];
$this->upload_file[$this->upload_file_num][' tmp_name ']=$_files[$field] [' tmp_name '] [$i];
$this->upload_file[$this->upload_file_num][' error ']=$_files[$field [' Error '] [$i];
$this->upload_file_num++;
}
}
}
else {
if (0==$_files["$field" [' Error '])
{
$this->upload_file[$this->upload_file_num][' name ']=$_files[' $field ' [' name '];
$this->upload_file[$this->upload_file_num][' type ']=$_files["$field" [' type '];
$this->upload_file[$this->upload_file_num][' size ']=$_files["$field" [' Size '];
$this->upload_file[$this->upload_file_num][' tmp_name ']=$_files["$field" [' Tmp_name '];
$this->upload_file[$this->upload_file_num][' error ']=$_files[' $field ' [' Error '];
$this->upload_file_num++;
}
}
}
/**
* Check upload file is structure to meet specified conditions
*
*/
Public function Check ($i)
{
if (!empty ($this->upload_file[$i [' name '])) {
Check File size
if ($this->upload_file[$i] [' Size ']> $this->max_size*1024) $this->upload_file[$i] [' Error ']=2;
Set default server-side file name
$this->upload_file[$i] [' filename ']= $this->upload_path. $this->upload_file[$i] [' name '];
Get File path information
$file _info=pathinfo ($this->upload_file[$i] [' name ']);
Get file name extension
$file _ext= $file _info[' extension ';
Check file types
if (!in_array ($file _ext, $this->allow_type)) $this->upload_file[$i [' Error ']=5;
You need to rename the
if ($this->renamed) {
List ($usec, $sec) = Explode ("", Microtime ());
$this->upload_file[$i [' filename ']= $sec. substr ($usec, 2). $file _ext;
Unset ($USEC);
Unset ($SEC);
}
Check if the file exists
if (file_exists ($this->upload_file[$i [' filename '])) {
if ($this->overwrite) {
@unlink ($this->upload_file[$i [' filename ']);
}else{
$j = 0;
do{
$j + +;
$temp _file=str_replace ('. '). $file _ext, ' ($j. '). $file _ext, $this->upload_file[$i] [' filename ']);
}while (file_exists ($temp _file));
$this->upload_file[$i] [' filename ']= $temp _file;
unset ($temp _file);
Unset ($J);
}
}
Check complete.
} else $this->upload_file[$i] [' Error ']=6;
}
/**
* Upload Files
*
* @return True
*/
Public Function upload ()
{
$upload _msg= ';
for ($i =0; $i < $this->upload_file_num; $i + +)
{
if (!empty ($this->upload_file[$i [' name ']))
{
Check file
$this->check ($i);
if (0== $this->upload_file[$i [' Error '])
{
Uploading files
if (! @move_uploaded_file ($this->upload_file[$i [' Tmp_name '], $this->upload_file[$i] [' filename ']))
{
$upload _msg.= ' upload file '. $this->upload_file[$i] [' name ']. ' ERROR: ' $this->error ($this->upload_file[$i [' ERROR '] ).'!
';
}else
{
$this->succ_upload_file[]= $this->upload_file[$i] [' filename '];
$upload _msg.= ' upload file '. $this->upload_file[$i] [' name ']. ' Success
';
}
}else $upload _msg.= ' upload file '. $this->upload_file[$i [' name ']. ' ERROR: ' $this->error ($this->upload_file[$i] [' Error ']). '!
';
}
}
echo $upload _msg;
}
Error message
Public Function error ($ERROR)
{
Switch ($error) {
Case 1:
Return ' file size exceeds the value of upload_max_filesize option limit in php.ini ';
Break
Case 2:
Return ' file size exceeds the value specified by the Max_file_size option in the HTML form ';
Break
Case 3:
Return ' files are only partially uploaded ';
Break
Case 4:
Return ' No files are uploaded ';
Break
Case 5:
Return ' This file is not allowed to be uploaded ';
Break
Case 6:
Return ' file name is empty ';
Break
Default
Return ' ERROR ';
Break
}
}
Get successful data information for an array (alternate)
Public Function Get_succ_file () {
return $this->succ_upload_file;
}
}
$upload =new file_upload ('./upload/', ' jpg|bmp|png|gif|jpeg ');
$upload->upload ();
$t = $upload->get_succ_file ();
Print_r ($t);

?>

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