Multiple file upload class code_PHP tutorial

True support for single file and multi-file upload code, corrected $_FILES[$field]['name'] cannot be used with variables and can only be used with forms The file name in name="userfile" is consistent with the disadvantage $_FILES['userfile']['name'], where The file name in "> can be chosen as desired.

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1. Single file upload

class File_upload{
public $upload_path='./upload/';//The path to the uploaded file
public $allow_type=array();//The file types allowed to be uploaded
public $max_size='20480';//Maximum file size allowed
public $overwrite=false;//Whether to set it to overwrite mode
public $renamed=false;//Whether to use the name of the uploaded file directly, Or is it automatically named by the system

/**
* Private variables
*/
private $upload_file=array();//Save the information of successfully uploaded files
private $upload_file_num=0;//The number of successfully uploaded files
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 the upload file type
public function set_allow_type($types){
$this- >allow_type=explode("|",$types);
}
//Upload files
public function get_upload_files()
{
foreach ($_FILES AS $key=> $field)
{
$this->get_upload_files_detial($key);
}
}
//The uploaded file data is stored in 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'];
$this->upload_file_num++;
}
}
}
/ **
* Check whether the uploaded file meets the specified conditions
*
*/
public function check($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 the default server 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 extension
$file_ext=$file_info['extension'];
//Check file type
if(!in_array($file_ext,$this->allow_type))$this->upload_file[$i ]['error']=5;
//Need to be renamed
if($this->renamed){
list($usec, $sec) = explode(" ",microtime( ));
$this->upload_file[$i]['filename']=$sec.substr($usec,2).'.'.$file_ext;
unset($usec);
unset($sec);
}
//Check whether the file exists
if(file_exists($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 completed
} else $this->upload_file[$i]['error']=6;
}
/**
* Upload file
*
* @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'])
{
//Upload file
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'].' Successful
';
}
}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 'The file size exceeds the value limited by the upload_max_filesize option in php.ini';
break;
case 2:
return 'File The size exceeds the value specified by the MAX_FILE_SIZE option in the HTML form';
break;
case 3:
return 'Only part of the file was uploaded';
break;
case 4:
return 'No file was uploaded';
break;
case 5:
return 'This file is not allowed to be uploaded';
break;
case 6:
return 'File Named empty';
break;
default:
return 'Error';
break;
}
}
//The successfully obtained data information is an array (backup )
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);

?>