PHP file upload function -- multiple file upload

This section mainly introduces the multi-file upload function of PHP upload files.
As long as you name the file upload tag in the form in the form of an array, you can upload multiple files at the same time.
Let’s take a look at an example:
------------------------------------------------- ----------------------------

                                                                                                                                  ;td>Upload files:
                                                                                                    Upload file:
                                                                                                                                                                                        name="upload_file[]" type="file" size="50" />
                                                                                                                                                               ="submit" value="Upload"/>
; $file_name){
            $info = "";               $info = $file_name. ": File size exceeded Server limit ";
                                                                                                                                                                                                                                                                                            case UPLOAD_ERR_PARTIAL:
                                                                                                                                                                                                                                                   Part of the file ";
                                   break; case UPLOAD_ERR_NO_TMP_DIR:
                   $info = $file_name. ": Temporary folder not found";
                                          break; UPLOAD_ERR_OK:
$upload_dir = './'.iconv("UTF-8","gb2312",$file_name);
                                                                                                   }else{
                                                                                                                                        else{
                               $info = $                                                                                                                                                                                                               $info =                                                 A}
Break;
}
Return $ Info;
}
if (isset ($ _ Post ['Submit'])) {
$ info = ''; '] [ 'name']);
for($i=0; $i<$count; ++$i){
if($_FILES['upload_file']['name'][$i] == "")
                                                                                                                                                                                                                              $info $i],
                       $_FILES[' upload_file']['name'][$i]
               ); -------------------------------------------------- ---------------
The code execution results are as follows:


Note:
1. , name="upload_file[]" must be named in array form, otherwise an error will occur: "Uninitialized string offset: 0", this sentence means that your array key value is out of bounds
2. $_FILES In ['upload_file']['name'][$i], upload_file is the name of the upload file marker in the form. When uploading multiple files, the third-dimensional subscript of the array $_FILES will automatically be numbered sequentially from 0.
The above has introduced the PHP file upload function - multi-file upload, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.