php 致命错误：无法重新分配自动全局变量
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Fatal error: Cannot re-assign auto-global variable
提问by sandeep
Fatal error: Cannot re-assign auto-global variable _FILES in C:\xampp\htdocs\user\utils\CommonUtils.php on line 1395
致命错误：无法在第 1395 行的 C:\xampp\htdocs\user\utils\CommonUtils.php 中重新分配自动全局变量 _FILES
The code on line 1395 is
第 1395 行的代码是
public static function saveAvatar($code, $pilotid, $_FILES) {
回答by Yogesh Suthar
you can't use $_FILESfor function parameter it's reserved word, use this instead of
您不能将其$_FILES用作保留字的函数参数，请使用 this 代替
public static function saveAvatar($code, $pilotid, $files) { }
and for calling pass the $_FILESlike this
并$_FILES像这样调用传递
saveAvatar($code, $pilotid, $_FILES);
OR
或者
You can also directly access the $_FILESwithout passing it in function parameter inside function.
您也可以直接访问$_FILES而不在函数内部传递函数参数。
回答by Mark Baker
You're trying to set a variable called $_FILES in local scpe as an argument to the saveAvatar() method; but can't because it's one of the special superglobals.
您试图在本地 scpe 中设置一个名为 $_FILES 的变量作为 saveAvatar() 方法的参数；但不能，因为它是特殊的超全局变量之一。
Change the line to
将行更改为
public static function saveAvatar($code, $pilotid) {
The $_FILES superglobal will still be available to that method simply because it is a superglobal
$_FILES 超全局变量仍可用于该方法，因为它是超全局变量
回答by Hafiz Hassan Latif
I was also facing the same problem. Then I just removed the $_FILES variable from list of variables and my website started working again.
我也面临同样的问题。然后我从变量列表中删除了 $_FILES 变量，我的网站又开始工作了。
回答by Kannadasan K
Normally we can't reassign the $_Files, which means we can't pass the auto super global variable as argument -or function. But we have an alternate solutions.
通常我们不能重新分配 $_Files，这意味着我们不能将 auto 超级全局变量作为参数 - 或函数传递。但我们有一个替代解决方案。
Pass the file as parameter
将文件作为参数传递
function ImageProcess(array $_File){
$image = $_FILES["file"]["name"];
$uploadedfile = $_FILES['file']['tmp_name'];
//Write your code here...
}
Call the function with auto global-variable as argument.
使用自动全局变量作为参数调用函数。
if ($_SERVER['REQUEST_METHOD'] == "POST") {
if(isset($_FILES['file'])){
echo ImageProcess($_FILES['file']);
}
}
Form for upload
上传表格
<form method="post" action="<?php $_SERVER['PHP_SELF'];?>" enctype="multipart/form-data">
<input type="file" name="file" />
<button type="submit">Update & Save</button>
</form>
