php文件上传类与实例(单文件上传、多文件上传)
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本文分享一个不错的php文件上传，可以实现单个文件的上传、多个文件的上传功能。有需要的朋友参考下吧。
1，php文件上传类
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."
2，单文件上传的例子：
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
}
}
?>
3，多文件上传的例子
language) {
case "de":
// add you translations here
break;
default:
$extra_msg[1] = "Error for: ".$this->the_file."";
$extra_msg[2] = "You have tried to upload ".$this->wrong_extensions." files with a bad extension, the following extensions
are allowed: ".$this->ext_string."";
$extra_msg[3] = "Select at least on file.";
$extra_msg[4] = "Select the file(s) for upload.";
$extra_msg[5] = "You have tried to upload ".$this->bad_filenames." files 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();
}
?>
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