[php] 檔案上傳

php檔案上傳的流程
表單→伺服器→暫存檔→檔案目錄

表單部份

FROM要有
enctype="multipart/form-data" 屬性

//單檔
 //多檔  之後使用$_FILES['UploadFile']['tmp_name'][0~n]

$_FILES

$_FILES['UploadFile']['tmp_name']
暫存檔路徑和檔名

$_FILES['UploadFile']['name']
上傳的原始檔名

$_FILES['UploadFile']['type']
MIME類型.如 "image/gif"

$_FILES['UploadFile']['size']
檔案大小

$_FILES['UploadFile']['error']
錯誤代碼
UPLOAD_ERR_OK
上傳成功

UPLOAD_ERR_INI_SIZE
大於php.ini upload_max_filesize的設定

UPLOAD_ERR_FORM_SIZE
大於表單MAX_FILE_SIZE設定

UPLOAD_ERR_PARTIAL
只傳送部份資料

UPLOAD_ERR_NO_FILE
沒有上傳的檔案

把上傳的暫存檔放到upload/test.dat (如果已經有的話會覆蓋)

move_uploaded_file($_FILES['UploadFile']['tmp_name'], 'upload/test.dat');
if( $_FILES['UploadFile']['error'] == UPLOAD_ERROR_OK ){
    if(move_uploaded_file($_FILES['UploadFile']['tmp_name'], 'upload/'.$_FILES['UploadFile']['name'])){
        echo '上傳成功';
    }
}