PHP File Upload instance details,

PHP File Upload instance details,

This example describes the PHP File Upload class. We will share this with you for your reference. The details are as follows:

The FileUpload. class. php file upload class is demonstrated here. Two constants are used, which can be defined in the website configuration file:

Define ('root _ path', dirname (_ FILE _); // define ('updir', '/uploads/') of the website ROOT directory; // upload the main directory

The Code is as follows:

<? Php // Upload File class FileUpload {private $ error; // error code private $ maxsize; // maximum form 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 private $ name; // file name private $ tmp; // temporary file private $ linkpath; // link path private $ linktotay; // Current Directory (relative) // constructor, initialize public function _ construct ($ _ file, $ _ maxsize ){ $ This-> error = $ _ FILES [$ _ file] ['error']; $ this-> maxsize =$ _ maxsize/1024; $ this-> type = $ _ FILES [$ _ file] ['type']; $ this-> path = ROOT_PATH.UPDIR; $ this-> linktotay = date ('ymmd '). '/'; $ 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 ($ _ path )); if ($ _ dir = '\') $ _ dir = '/'; $ this-> linkpath = $ _ dir. $ this-> linkpath; return $ this-> linkpath;} // move the 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: the temporary file does not exist! ') ;}} // Set the 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 the private function checkPath () {if (! Is_dir ($ this-> path) |! Is_writeable ($ this-> path) {if (! Mkdir ($ this-> path) {Tool: alertBack ('warning: failed to create the main directory! ') ;}} If (! Is_dir ($ this-> today) |! Is_writeable ($ this-> today) {if (! Mkdir ($ this-> today) {Tool: alertBack ('warning: failed to create the subdirectory! ') ;}}// Verification type private function checkType () {if (! In_array ($ this-> type, $ this-> typeArr) {Tool: alertBack ('Warning: Invalid upload type! ') ;}} // Verification error private function checkError () {if (! Empty ($ this-> error) {switch ($ this-> error) {case 1: Tool: alertBack ('Warning: the upload value exceeds the agreed maximum! '); Break; case 2: Tool: alertBack ('Warning: the upload value exceeds'. $ this-> maxsize. 'KB! '); Break; case 3: Tool: alertBack (' warning: only some files are uploaded! '); Break; case 4: Tool: alertBack (' warning: No file is uploaded! '); Break; default: Tool: alertBack (' warning: Unknown error! ') ;}}}?>

A static Tool class Tool. class. php is used. The Code is as follows:

Tool. class. php

<? Php class Tool {// return static public function alertBack ($ _ info) {echo "<script type = 'text/javascript '> alert (' $ _ info '); history. back (); </script> "; exit () ;}// close the static public function alertOpenerClose ($ _ info, $ _ path) {echo "<script type = 'text/javascript '> alert (' $ _ info'); </script> "; echo "<script type = 'text/javascript '> opener.doc ument. content. thumbnail. value = '$ _ path'; </script> "; echo" <script t Ype = 'text/javascript '> opener.doc ument. content. pic. style. display = 'block'; </script> "; echo" <script type = 'text/javascript '> opener.doc ument. content. pic. src = '$ _ path'; </script> "; echo" <script type = 'text/javascript'> window. close (); </script> "; exit () ;}}?>

The following is an example. See the following steps:

1. Create an index. php page and create a form.

Index. php

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
2. Create an upfile.html file, create a form, and submit it to upload. php.
Upfile.html
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
3. Use the upload. php file to call the File upload class for upload, and assign the path to the input label and display image.
<? Php require 'fileupload. class. php '; if (isset ($ _ POST ['send']) {$ _ fileupload = new FileUpload ('pic ', $ _ POST ['max _ FILE_SIZE ']); $ _ path = $ _ fileupload-> getPath (); Tool: alertOpenerClose ('file uploaded successfully! ', $ _ Path);} else {Tool: alertBack (' warning: the file is too large or other unknown errors cause the browser to crash! ') ;}?>