Question

如何通过文件上传选项将文件传递到服务器？

i）我使用如下形式：

<form name = "someForm" id = "someForm" method = "post" action = "saveFile.php">                
    <input type = "file" name = "upload1" id = "upload1" />
    <input type = "file" name = "upload2" id = "upload2" />                     
    <input type = "file" name = "upload3" id = "upload3" />
    <input type = "submit" id = "btnSubmit" value = "Submit" />
</form>

ii）在saveFile.php中，我使用：

说：

echo $_FILES['upload1']["size"];

除了其他人，但我得到未定义索引：upload1 错误，但不是，当我使用：

echo $_POST['upload1'];  //returns filename

Answer 1

您需要将<form> enctype指定为"multipart/form-data"：

<form enctype = "multipart/form-data" name = "someForm" id = "someForm" method = "post" action = "saveFile.php">                
    <input type = "file" name = "upload1" id = "upload1" />
    <input type = "file" name = "upload2" id = "upload2" />                     
    <input type = "file" name = "upload3" id = "upload3" />
    <input type = "submit" id = "btnSubmit" value = "Submit" />
</form>

Answer 2

<form name="someForm" id="someForm" method="post"
    action="saveFile.php" enctype="multipart/form-data">

上传文件需要输入。

您可以$_FILES而不是$_POST访问它们，也不能$_GET访问它们：

echo $_FILES['upload1']['size'];

Answer 3

文件保存在：

print_r($_FILES); // NOT IN POST

php中的文件上传错误

3 个答案: