$ _POST变量不能与$ _FILES和multipart / form-data一起使用 [英] $_POST variables not working with $_FILES and multipart/form-data

问题描述

每当我将HTML表单上的 enctype 更改为 multipart / form-data ， $ _ POST 变量不会填充到我的php脚本中。用户上传文件并填写表单，并将文件上传到服务器，但 $ _ POST 变量不会填充。

代码：

收集数据文本/图片的HTML表单。

index.php

 < form name =myFormMETHOD =POST ACTION =enctype =multipart / form-data> 
< input type =textname =text1id =text1> 
< input type =textname =text2id =text2> 
< input type =filename =filebuttonid =filebutton> 
< input type =submitname =submitid =submit> 
< / form> 
  

我的php脚本试图更新我的MySQL数据库，并且在我的Ubuntu服务器上上传我的文件

upload.php

 <？php 
 $ uploaddir =/ var / www / img / pictures /; 
 $ uploadfile = $ uploaddir。基名（$ _ FILES [ filebutton] [名称]）; 
 move_uploaded_file（$ _ FILES ['filebutton'] ['tmp_name']，$ uploadfile）; 
 if（isset（$ _ POST ['filebutton']））{
 $ pictureUpdate =，PICTURE_FILEPATH ='。 $ _POST ['filebutton']。 ; 
} else {
 $ pictureUpdate =; 
} 
 $ connection = mysqli_connect（1.2.3.4，xxxx，xxxx，xxxx）或die（Caonnot connect to database。）; 
 $ update =UPDATE table SET COLUMN1 ='。 $ _POST ['text1']。 '，COLUMN2 ='。 $ _POST ['text2']。 '。$ pictureUpdate。其中COLUMN3 =。$ _POST ['text1']。; 
 $ update_sql = mysqli_query（$ connection，$ update）或死（无法连接到mysql表。）。 
 header（Location：。$ _SERVER ['REQUEST_URL']。？success = 1）; 
 exit（）; 
   
 
 
 我试过的东西： 
这是第一次这样做，所以我在这里挺自由的因为我似乎无法得到此工作。
 
 
 
 
 
将 enctype 更改为 application / x-www-form-urlencoded 。 $ _ POST 或 $ _ FILE  code>数据显示在 upload.php 文件中。 
 
已删除 application / x-www-form-urlencoded 当我这样做时，我的 $ _ POST 变量有效，但是我的文件没有上传。  检查 php.ini 为 post_max_size 在搜索互联网时，我遇到了一些有关类似问题的StackOverflow主题。 t我收集到了，如果试图上传的文件超过了 post_max_size 中的值，那么 $ _ POST 变量将会不通过。我的 php.ini 文件中 post_max_size 的值为8M，上传的测试文件图片为103 KiB。
 
 
 
 
 
如何获得 $ _ POST 数据以及上传文件同样的形式？
解决方案
你只需要将你的文件移动到你的if语句中，并将 $ _POST ['filebutton'] 至 $ _ FILES ['filebutton']  
 
 
 
你做一个文件上传，这些文件被填充在 $ _ FILES 全局变量中，其他字段填充到 $ _ POST中全局变量。
 <？php 
 $ uploaddir =/ var / www / img / pictures /; 
 if（isset（$ _ FILES ['filebutton']））{
 $ uploadfile = $ uploaddir。基名（$ _ FILES [ filebutton] [名称]）; 
 move_uploaded_file（$ _ FILES ['filebutton'] ['tmp_name']，$ uploadfile）; 
 $ pictureUpdate =，PICTURE_FILEPATH ='。 $ _FILES ['filebutton']。 ; 
} else {
 $ pictureUpdate =; 
} 
 $ connection = mysqli_connect（1.2.3.4，xxxx，xxxx，xxxx）或die（Caonnot connect to database。）; 
 $ update =UPDATE table SET COLUMN1 ='。 $ _POST ['text1']。 '，COLUMN2 ='。 $ _POST ['text2']。 '。$ pictureUpdate。其中COLUMN3 =。$ _POST ['text1']。; 
 $ update_sql = mysqli_query（$ connection，$ update）或死（无法连接到mysql表。）。 
 header（Location：。$ _SERVER ['REQUEST_URL']。？success = 1）; 
 exit（）; 
  
试试这个代码，看看它对你有什么作用，如果这样做，而另一个不然，那意味着你需要解决更多的代码 
 
 
 
 
 test.php  
 
 
 
 
< form name =myFormMETHOD =POSTACTION =enctype =multipart / form-data> 
< input type =text name =text1id =text1> 
< input type =textname =text2id =text2> 
< filebuttonid =filebutton> 
< input type =submitname =submitid =submit> 
< / form> 
< xmp> ;<？php if（$ _SERVER ['REQUEST_METHOD'] ==='POST'）{var_dump（$ _ FILES，$ _POST）;}？> ;< / xmp> 
  
 
 
 
 
 
输出
 
 
 
 
 
  array（1）{
 [filebutton] => 
 array（5）{
 [name] => 
 string（21）scanParser.properties
 [type] => 
 string（24）application / octet-stream
 [tmp_name] => 
 string（14）/ tmp / phpRm1Ytp
 [error] => 
 int（0）
 [size] => 
 int（264）
} 
} 
 array（3）{
 [text1] => 
字符串（1）1
 [text2] => 
 string（1）2
 [submit] => 
 string（6）Submit
} 
  
 
Problem: Whenever I change the enctype on my HTML form to multipart/form-data, $_POST variables do not populate in my php script. Users upload files along with filling out a form, and the files upload to the server but the $_POST variables do not populate.

Code:

My HTML form that collects the data text/picture.

index.php
<form name="myForm" METHOD="POST" ACTION="" enctype="multipart/form-data">
  <input type="text" name="text1" id="text1">
  <input type="text" name="text2" id="text2">
  <input type="file" name="filebutton" id="filebutton">
  <input type="submit" name="submit" id="submit">
</form>
My php script that attempts to update my MySQL database, as well as upload my file on my Ubuntu server is below.

upload.php
<?php
$uploaddir = "/var/www/img/pictures/";
$uploadfile = $uploaddir . basename($_FILES['filebutton']['name']);
move_uploaded_file($_FILES['filebutton']['tmp_name'], $uploadfile);
if (isset($_POST['filebutton'])) {  
    $pictureUpdate = ", PICTURE_FILEPATH = '" . $_POST['filebutton'] . "'";
} else {
    $pictureUpdate = "";
}
$connection = mysqli_connect("1.2.3.4","xxxx","xxxx","xxxx") or die("Caonnot connect to database.");
$update = "UPDATE table SET COLUMN1='" . $_POST['text1'] . "', COLUMN2='" . $_POST['text2'] . "' . $pictureUpdate . " where COLUMN3 = " . $_POST['text1'] . " ";
$update_sql = mysqli_query($connection, $update) or die("Cannot connect to mysql table. ". $update);
header("Location: " . $_SERVER['REQUEST_URL'] . "?success=1");
exit();
What I've Tried:
This is the first time doing this, so I'm kinda freestyling here because I cannot seem to get this to work.


Changed the enctype to application/x-www-form-urlencoded. Neither the $_POST or $_FILE data showed up in the upload.php file.
Removed application/x-www-form-urlencoded altogether. When I do this, my $_POST variables work, but my file does not upload.
Checked php.ini for post_max_size. Upon searching the internet, I've come across a couple StackOverflow topics concerning similar issues. From what I've gathered, if the file trying to be uploaded exceeds the value in post_max_size, then $_POST variables will not go through. The value in my php.ini file for post_max_size says "8M", and the test file picture being uploaded is 103 KiB.


How do I get $_POST data to work, as well as uploading a file from the same form?
解决方案
You just need to move your file stuff inside your if statement, and change $_POST['filebutton'] to $_FILES['filebutton']

Whenever you do a file upload, the files get populated in the $_FILES global variable, and the other fields get populated in the $_POST global variable.
<?php
$uploaddir = "/var/www/img/pictures/";
if (isset($_FILES['filebutton'])) {  
    $uploadfile = $uploaddir . basename($_FILES['filebutton']['name']);
    move_uploaded_file($_FILES['filebutton']['tmp_name'], $uploadfile);
    $pictureUpdate = ", PICTURE_FILEPATH = '" . $_FILES['filebutton'] . "'";
} else {
    $pictureUpdate = "";
}
$connection = mysqli_connect("1.2.3.4","xxxx","xxxx","xxxx") or die("Caonnot connect to database.");
$update = "UPDATE table SET COLUMN1='" . $_POST['text1'] . "', COLUMN2='" . $_POST['text2'] . "' . $pictureUpdate . " where COLUMN3 = " . $_POST['text1'] . " ";
$update_sql = mysqli_query($connection, $update) or die("Cannot connect to mysql table. ". $update);
header("Location: " . $_SERVER['REQUEST_URL'] . "?success=1");
exit();
try this code, and see what it does for you, if this works and the other does not then that means there's more to your code we need to solve the problem.

  
test.php


<form name="myForm" METHOD="POST" ACTION="" enctype="multipart/form-data">
  <input type="text" name="text1" id="text1">
  <input type="text" name="text2" id="text2">
  <input type="file" name="filebutton" id="filebutton">
  <input type="submit" name="submit" id="submit">
</form>
<xmp><?php if ($_SERVER['REQUEST_METHOD'] === 'POST') { var_dump($_FILES, $_POST); } ?></xmp>



  
output


array(1) {
  ["filebutton"]=>
  array(5) {
    ["name"]=>
    string(21) "scanParser.properties"
    ["type"]=>
    string(24) "application/octet-stream"
    ["tmp_name"]=>
    string(14) "/tmp/phpRm1Ytp"
    ["error"]=>
    int(0)
    ["size"]=>
    int(264)
  }
}
array(3) {
  ["text1"]=>
  string(1) "1"
  ["text2"]=>
  string(1) "2"
  ["submit"]=>
  string(6) "Submit"
}


                        
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