1，php文件上传类
<?php
/**
* php 文件上传类
* by www.jb200.com
*/
class file_upload {
var $the_file;
var $the_temp_file;
var $upload_dir;
var $replace;
var $do_filename_check;
var $max_length_filename = 100;
var $extensions;
var $ext_string;
var $language;
var $http_error;
var $rename_file; // if this var is true the file copy get a new name
var $file_copy; // the new name
var $message = array();
var $create_directory = true;
function file_upload() {
$this->language = "en"; // choice of en, nl, es
$this->rename_file = false;
$this->ext_string = "";
}
function show_error_string() {
$msg_string = "";
foreach ($this->message as $value) {
$msg_string .= $value."<br>n";
}
return $msg_string;
}
function set_file_name($new_name = "") { // this "conversion" is used for unique/new filenames
if ($this->rename_file) {
if ($this->the_file == "") return;
$name = ($new_name == "") ? strtotime("now") : $new_name;
$name = $name.$this->get_extension($this->the_file);
} else {
$name = $this->the_file;
}
return $name;
}
function upload($to_name = "") {
$new_name = $this->set_file_name($to_name);
if ($this->check_file_name($new_name)) {
if ($this->validateExtension()) {
if (is_uploaded_file($this->the_temp_file)) {
$this->file_copy = $new_name;
if ($this->move_upload($this->the_temp_file, $this->file_copy)) {
$this->message[] = $this->error_text($this->http_error);
if ($this->rename_file) $this->message[] = $this->error_text(16);
return true;
}
} else {
$this->message[] = $this->error_text($this->http_error);
return false;
}
} else {
$this->show_extensions();
$this->message[] = $this->error_text(11);
return false;
}
} else {
return false;
}
}
function check_file_name($the_name) {
if ($the_name != "") {
if (strlen($the_name) > $this->max_length_filename) {
$this->message[] = $this->error_text(13);
return false;
} else {
if ($this->do_filename_check == "y") {
if (preg_match("/^[a-z0-9_]*.(.){1,5}$/i", $the_name)) {
return true;
} else {
$this->message[] = $this->error_text(12);
return false;
}
} else {
return true;
}
}
} else {
$this->message[] = $this->error_text(10);
return false;
}
}
function get_extension($from_file) {
$ext = strtolower(strrchr($from_file,"."));
return $ext;
}
function validateExtension() {
$extension = $this->get_extension($this->the_file);
$ext_array = $this->extensions;
if (in_array($extension, $ext_array)) {
// check mime type hier too against allowed/restricted mime types (boolean check mimetype)
return true;
} else {
return false;
}
}
// this method is only used for detailed error reporting
function show_extensions() {
$this->ext_string = implode(" ", $this->extensions);
}
function move_upload($tmp_file, $new_file) {
umask(0);
if ($this->existing_file($new_file)) {
$newfile = $this->upload_dir.$new_file;
if ($this->check_dir($this->upload_dir)) {
if (move_uploaded_file($tmp_file, $newfile)) {
if ($this->replace == "y") {
//system("chmod 0777 $newfile"); // maybe you need to use the system command in some cases...
chmod($newfile , 0777);
} else {
// system("chmod 0755 $newfile");
chmod($newfile , 0755);
}
return true;
} else {
return false;
}
} else {
$this->message[] = $this->error_text(14);
return false;
}
} else {
$this->message[] = $this->error_text(15);
return false;
}
}
function check_dir($directory) {
if (!is_dir($directory)) {
if ($this->create_directory) {
umask(0);
mkdir($directory, 0777);
return true;
} else {
return false;
}
} else {
return true;
}
}
function existing_file($file_name) {
if ($this->replace == "y") {
return true;
} else {
if (file_exists($this->upload_dir.$file_name)) {
return false;
} else {
return true;
}
}
}
function get_uploaded_file_info($name) {
$str = "File name: ".basename($name)."n";
$str .= "File size: ".filesize($name)." bytesn";
if (function_exists("mime_content_type")) {
$str .= "Mime type: ".mime_content_type($name)."n";
}
if ($img_dim = getimagesize($name)) {
$str .= "Image dimensions: x = ".$img_dim[0]."px, y = ".$img_dim[1]."pxn";
}
return $str;
}
// this method was first located inside the foto_upload extension
function del_temp_file($file) {
$delete = @unlink($file);
clearstatcache();
if (@file_exists($file)) {
$filesys = eregi_replace("/","",$file);
$delete = @system("del $filesys");
clearstatcache();
if (@file_exists($file)) {
$delete = @chmod ($file, 0775);
$delete = @unlink($file);
$delete = @system("del $filesys");
}
}
}
// some error (HTTP)reporting, change the messages or remove options if you like.
function error_text($err_num) {
switch ($this->language) {
case "nl":
$error[0] = "Foto succesvol kopieert.";
$error[1] = "Het bestand is te groot, controlleer de max. toegelaten bestandsgrootte.";
$error[2] = "Het bestand is te groot, controlleer de max. toegelaten bestandsgrootte.";
$error[3] = "Fout bij het uploaden, probeer het nog een keer.";
$error[4] = "Fout bij het uploaden, probeer het nog een keer.";
$error[10] = "Selecteer een bestand.";
$error[11] = "Het zijn alleen bestanden van dit type toegestaan: <b>".$this->ext_string."</b>";
$error[12] = "Sorry, de bestandsnaam bevat tekens die niet zijn toegestaan. Gebruik alleen nummer, letters en het underscore teken. <br>
Een geldige naam eindigt met een punt en de extensie.";
$error[13] = "De bestandsnaam is te lang, het maximum is: ".$this->max_length_filename." teken.";
$error[14] = "Sorry, het opgegeven directory bestaat niet!";
$error[15] = "Uploading <b>".$this->the_file."...Fout!</b> Sorry, er is al een bestand met deze naam aanwezig.";
$error[16] = "Het gekopieerde bestand is hernoemd naar <b>".$this->file_copy."</b>.";
break;
case "de":
$error[0] = "Die Datei: <b>".$this->the_file."</b> wurde hochgeladen!";
$error[1] = "Die hochzuladende Datei ist größer als der Wert in der Server-Konfiguration!";
$error[2] = "Die hochzuladende Datei ist größer als der Wert in der Klassen-Konfiguration!";
$error[3] = "Die hochzuladende Datei wurde nur teilweise übertragen";
$error[4] = "Es wurde keine Datei hochgeladen";
$error[10] = "Wählen Sie eine Datei aus!.";
$error[11] = "Es sind nur Dateien mit folgenden Endungen erlaubt: <b>".$this->ext_string."</b>";
$error[12] = "Der Dateiname enthält ungültige Zeichen. Benutzen Sie nur alphanumerische Zeichen für den Dateinamen
mit Unterstrich. <br>Ein gültiger Dateiname endet mit einem Punkt, gefolgt von der Endung.";
$error[13] = "Der Dateiname überschreitet die maximale Anzahl von ".$this->max_length_filename." Zeichen.";
$error[14] = "Das Upload-Verzeichnis existiert nicht!";
$error[15] = "Upload <b>".$this->the_file."...Fehler!</b> Eine Datei mit gleichem Dateinamen existiert bereits.";
$error[16] = "Die hochgeladene Datei ist umbenannt in <b>".$this->file_copy."</b>.";
break;
//
// place here the translations (if you need) from the directory "add_translations"
//
default:
// start http errors
$error[0] = "File: <b>".$this->the_file."</b> successfully uploaded!";
$error[1] = "The uploaded file exceeds the max. upload filesize directive in the server configuration.";
$error[2] = "The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the html form.";
$error[3] = "The uploaded file was only partially uploaded";
$error[4] = "No file was uploaded";
// end http errors
$error[10] = "Please select a file for upload.";
$error[11] = "Only files with the following extensions are allowed: <b>".$this->ext_string."</b>";
$error[12] = "Sorry, the filename contains invalid characters. Use only alphanumerical chars and separate parts of the
name (if needed) with an underscore. <br>A valid filename ends with one dot followed by the extension.";
$error[13] = "The filename exceeds the maximum length of ".$this->max_length_filename." characters.";
$error[14] = "Sorry, the upload directory doesn't exist!";
$error[15] = "Uploading <b>".$this->the_file."...Error!</b> Sorry, a file with this name already exitst.";
$error[16] = "The uploaded file is renamed to <b>".$this->file_copy."</b>.";
}
return $error[$err_num];
}
}
?>
2，单文件上传的例子：
<?php
include ($_SERVER['DOCUMENT_ROOT']."/classes/upload/upload_class.php"); //classes is the map where the class file is stored (one above the root)
$max_size = 1024*250; // the max. size for uploading
$my_upload = new file_upload;
$my_upload->upload_dir = $_SERVER['DOCUMENT_ROOT']."/files/new/"; // "files" is the folder for the uploaded files (you have to create this folder)
$my_upload->extensions = array(".png", ".zip", ".pdf"); // specify the allowed extensions here
// $my_upload->extensions = "de"; // use this to switch the messages into an other language (translate first!!!)
$my_upload->max_length_filename = 50; // change this value to fit your field length in your database (standard 100)
$my_upload->rename_file = true;
if(isset($_POST['Submit'])) {
$my_upload->the_temp_file = $_FILES['upload']['tmp_name'];
$my_upload->the_file = $_FILES['upload']['name'];
$my_upload->http_error = $_FILES['upload']['error'];
$my_upload->replace = (isset($_POST['replace'])) ? $_POST['replace'] : "n"; // because only a checked checkboxes is true
$my_upload->do_filename_check = (isset($_POST['check'])) ? $_POST['check'] : "n"; // use this boolean to check for a valid filename
$new_name = (isset($_POST['name'])) ? $_POST['name'] : "";
if ($my_upload->upload($new_name)) { // new name is an additional filename information, use this to rename the uploaded file
$full_path = $my_upload->upload_dir.$my_upload->file_copy;
$info = $my_upload->get_uploaded_file_info($full_path);
// ... or do something like insert the filename to the database
}
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>php文件上传的例子-www.jb200.com</title>
<style type="text/css">
<!--
label {
float:left;
display:block;
width:120px;
}
input {
float:left;
}
-->
</style>
</head>
<body>
<h3>php文件上传:</h3>
<p>Max. filesize = <?php echo $max_size; ?> bytes.</p>
<form name="form1" enctype="multipart/form-data" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $max_size; ?>"><br>
<label for="upload">选择文件：</label><input type="file" name="upload" size="30"><br clear="all">
<label for="name">新的文件名称：</label><input type="text" name="name" size="20">
(without extension!) <br clear="all">
<label for="replace">是否替换</label><input type="checkbox" name="replace" value="y"><br clear="all">
<label for="check">验证文件名称：</label><input name="check" type="checkbox" value="y" checked><br clear="all">
<input style="margin-left:120px;" type="submit" name="Submit" value="Submit">
</form>
<br clear="all">
<p><?php echo $my_upload->show_error_string(); ?></p>
<?php if (isset($info)) echo "<blockquote>".nl2br($info)."</blockquote>"; ?>
</body>
</html>
3，多文件上传的例子
<?php
include ($_SERVER['DOCUMENT_ROOT']."/classes/upload/upload_class.php"); //classes is the map where the class file is stored (one above the root)
//error_reporting(E_ALL);
$max_size = 1024*100; // the max. size for uploading
class muli_files extends file_upload { //扩展file_upload类，以实现多文件上传功能
var $number_of_files = 0;
var $names_array;
var $tmp_names_array;
var $error_array;
var $wrong_extensions = 0;
var $bad_filenames = 0;
function extra_text($msg_num) {
switch ($this->language) {
case "de":
// add you translations here
break;
default:
$extra_msg[1] = "Error for: <b>".$this->the_file."</b>";
$extra_msg[2] = "You have tried to upload ".$this->wrong_extensions." files with a bad extension, the following extensions
are allowed: <b>".$this->ext_string."</b>";
$extra_msg[3] = "Select at least on file.";
$extra_msg[4] = "Select the file(s) for upload.";
$extra_msg[5] = "You have tried to upload <b>".$this->bad_filenames." files</b> with invalid characters inside the filename.";
}
return $extra_msg[$msg_num];
}
// this method checkes the number of files for upload
// this example works with one or more files
function count_files() {
foreach ($this->names_array as $test) {
if ($test != "") {
$this->number_of_files++;
}
}
if ($this->number_of_files > 0) {
return true;
} else {
return false;
}
}
function upload_multi_files () {
$this->message = "";
if ($this->count_files()) {
foreach ($this->names_array as $key => $value) {
if ($value != "") {
$this->the_file = $value;
$new_name = $this->set_file_name();
if ($this->check_file_name($new_name)) {
if ($this->validateExtension()) {
$this->file_copy = $new_name;
$this->the_temp_file = $this->tmp_names_array[$key];
if (is_uploaded_file($this->the_temp_file)) {
if ($this->move_upload($this->the_temp_file, $this->file_copy)) {
$this->message[] = $this->error_text($this->error_array[$key]);
if ($this->rename_file) $this->message[] = $this->error_text(16);
sleep(1); // wait a seconds to get an new timestamp (if rename is set)
}
} else {
$this->message[] = $this->extra_text(1);
$this->message[] = $this->error_text($this->error_array[$key]);
}
} else {
$this->wrong_extensions++;
}
} else {
$this->bad_filenames++;
}
}
}
if ($this->bad_filenames > 0) $this->message[] = $this->extra_text(5);
if ($this->wrong_extensions > 0) {
$this->show_extensions();
$this->message[] = $this->extra_text(2);
}
} else {
$this->message[] = $this->extra_text(3);
}
}
}
$multi_upload = new muli_files;
$multi_upload->upload_dir = $_SERVER['DOCUMENT_ROOT']."/files/"; // "files" is the folder for the uploaded files (you have to create this folder)
$multi_upload->extensions = array(".png", ".zip"); // specify the allowed extensions here
$multi_upload->message[] = $multi_upload->extra_text(4); // a different standard message for multiple files
//$multi_upload->rename_file = true; // set to "true" if you want to rename all files with a timestamp value
$multi_upload->do_filename_check = "y"; // check filename ...
if(isset($_POST['Submit'])) {
$multi_upload->tmp_names_array = $_FILES['upload']['tmp_name'];
$multi_upload->names_array = $_FILES['upload']['name'];
$multi_upload->error_array = $_FILES['upload']['error'];
$multi_upload->replace = (isset($_POST['replace'])) ? $_POST['replace'] : "n"; // because only a checked checkboxes is true
$multi_upload->upload_multi_files();
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>php多文件上传的例子-www.jb200.com</title>
<style type="text/css">
<!--
label {
width: 80px;
}
input {
margin-bottom:3px;
margin-left:5px;
}
-->
</style>
</head>
<body>
<h3>PHP 多文件上传:</h3>
<p>Max. filesize = <?php echo $max_size; ?> bytes. (each) </p>
<form name="form1" enctype="multipart/form-data" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $max_size; ?>">
<label for="upload[]">File 1:</label>
<input type="file" name="upload[]" size="30"><br>
<label for="upload[]">File 2:</label>
<input type="file" name="upload[]" size="30"><br>
<label for="upload[]">File 3:</label>
<input type="file" name="upload[]" size="30"><br>
<!-- Add here more file fields if you need. -->
Replace files?
<input type="checkbox" name="replace" value="y">
<input type="submit" name="Submit" value="上传文件">
</form>
<p><?php echo $multi_upload->show_error_string(); ?></p>
</body>
</html>