PHP File Upload Class example detailed _php skills

This article describes the php file upload class. Share to everyone for your reference, specific as follows:

This shows the FileUpload.class.php file upload class, which uses two constants that can be defined in the Web site configuration file:

Define (' Root_path ', DirName (__file__)); Site root directory
define (' Updir ', '/uploads/');//Upload home directory

The specific code is as follows:

<?php//Upload file class FileUpload {private $error; Error code private $maxsize;  Form maximum value private $type; Type private $TYPEARR = Array (' Image/jpeg ', ' image/pjpeg ', ' image/png ', ' image/x-png ', ' image/gif ');  Type collection private $path;  directory path private $today;  Today's directory is private $name;  File name private $tmp; Temporary files private $linkpath; Link path private $linktotay; Today's directory (relative)//construction method, initializing Public function __construct ($_file,$_maxsize) {$this->error = $_files[$_file][' er
       Ror '];
       $this->maxsize = $_maxsize/1024;
       $this->type = $_files[$_file][' type ']; $this->path = Root_path.
       Updir; $this->linktotay = Date (' Ymd '). '
       /';
       $this->today = $this->path. $this->linktotay;
       $this->name = $_files[$_file][' name '];
       $this->tmp = $_files[$_file][' tmp_name '];
       $this->checkerror ();
       $this->checktype ();
       $this->checkpath ();
    $this->moveupload ();
 }//return path   Public Function GetPath () {$_path = $_server["Script_name"];
       $_dir = DirName (dirname ($_path));
       if ($_dir = = ' \ ') $_dir = '/';
       $this->linkpath = $_dir. $this->linkpath;
    return $this->linkpath; }//Move file Private Function Moveupload () {if (Is_uploaded_file ($this->tmp)) {if (!move_uploaded _file ($this->tmp, $this->setnewname ())) {Tool::alertback (' Warning: Upload failed!
         '); } else {Tool::alertback (' Warning: temp file does not exist!
       ');
       }//Set new file name Private function Setnewname () {$_namearr = explode ('. ', $this->name);
       $_postfix = $_namearr[count ($_namearr)-1]; $_newname = Date (' Ymdhis '). Mt_rand (100,1000).
       $_postfix;
       $this->linkpath = updir. $this->linktotay.$_newname;
    return $this->today.$_newname;
         }//Verify directory Private Function Checkpath () {if (!is_dir ($this->path) | |!is_writeable ($this->path)) { if (!mkdir ($this->path)) {Tool::alertback (' Warning: Home directory creation failed!
         '); } if (!is_dir ($this->today) | | |!is_writeable ($this->today)) {if (!mkdir ($this->today)) {Tool::alertback (' Warning: subdirectory creation failed!
         ');
         }}//authentication type Private Function Checktype () {if (!in_array ($this->type, $this->typearr)) { Tool::alertback (' Warning: illegal upload type!
       '); }///Validation error private Function CheckError () {if (!empty ($this->error)) {switch ($this->er ROR) {case 1:tool::alertback (' Warning: Upload value exceeds the agreed maximum value!)
              ');
            Break Case 2:tool::alertback (' Warning: Upload value exceeded '. $this->maxsize. ' kb!
              ');
            Break Case 3:tool::alertback (' Warning: Only part of the file is uploaded!
              ');
            Break Case 4:tool::alertback (' Warning: No files are uploaded!
              ');
            Break Default:tool::alertback (' Warning: unknown error!
      ');   }}}?>

 

Among them, the use of a static tool class Tool.class.php, the code is as follows:

Tool.class.php

<?php
  class Tool {
     //Bounce window returns
     the static public function Alertback ($_info) {
       echo "<script type= ' text/ JavaScript ' >alert (' $_info '); History.back ();</script> ";
       Exit ();
     }     Window assignment close static public
     function Alertopenerclose ($_info,$_path) {
       echo "<script type= ' Text/javascript ' >alert (' $_info ');</script> ";
       echo "<script type= ' text/javascript ' >opener.document.content.thumbnail.value= ' $_path ';</script>";
       echo "<script type= ' Text/javascript ' >opener.document.content.pic.style.display= ' block ';</script>";
       echo "<script type= ' text/javascript ' >opener.document.content.pic.src= ' $_path ';</script>";
       echo "<script type= ' Text/javascript ' >window.close ();</script>";
       Exit ();
     } }
?>

Here's a demo of an example, take a look at the following steps:

1, first create a index.php page, make a form

index.php

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en"
"http://www.w3.org/TR/xhtml1/DTD/ Xhtml1-transitional.dtd ">

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
 
 

3, through the upload.php file call file Upload class implementation upload, and the path assigned to the input label and display picture

<?php
  require ' FileUpload.class.php ';
  if (isset ($_post[' send ')) {
    $_fileupload = new FileUpload (' pic ', $_post[' max_file_size '));
    $_path = $_fileupload->getpath ();
    Tool::alertopenerclose (' File Upload success! ', $_path);
  } else {
    tool::alertback (' Warning: The file is too large or another unknown error caused the browser to crash! ');
  }
? >

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I hope this article will help you with the PHP program design.