问题
I'm trying to use this to create a image form upload for my website, the reason I'm using this is because it's more secure than doing everything myself (but if someone could point another working script I would be appreciated)
simon-eQ / ImageUploader
Fatal error: Namespace declaration statement has to be the very first statement in the script in C:\xampp\htdocs\project\lib\ImageUploader.php on line 4
Looking at the source code:
<br />
<b>Fatal error</b>: Namespace declaration statement has to be the very first statement in the script in <b>C:\xampp\htdocs\project\lib\ImageUploader.php</b> on line <b>4</b><br />
I've tried with includes, requires and it still doesn't work.
回答1:
Sometimes this issue come because of space in PHP start tag of controller facing same issue just removed whitespace in:
<?php
namespace App\Http\Controllers\Auth;
removing the space resolved my error
回答2:
This thread seems to be talking about the same issue - it sounds like this error is usually caused by having some data sent out of the server before the namespace statement is encountered.
- Could your web hosting be inserting some code into your page before the PHP code?
- Is there a UTF-8 Byte Order Mark at the beginning of the document?
On the other hand, it could also be a bug in ImageUploader... the main PHP file puts the namespace after the class definition, which I haven't seen in the PHP documentation, which says it should be the very first PHP code. From this page:
Namespaces are declared using the namespace keyword. A file containing a namespace must declare the namespace at the top of the file before any other code - with one exception: the declare keyword.
There's no declare keyword here, so perhaps this is a bug in the source code that slips by the developer's version of PHP, because he doesn't put the namespace first:
<?php
class BulletProofException extends Exception{}
namespace BulletProof;
/**
* BulletProof ImageUploder:
...
回答3:
I have also faced the problem. In the php file, I have written following code where there was some space before php start tag
<?php
namespace App\Controller;
when I remove that space, it solved.
回答4:
If your using an IDE, you must start your code at the very first line. example Im using aptana studio3
//line1<?php
//line2 your code
//line3 your code
....
....
Hope it helps.That solves my problem,.
回答5:
You must change the file encoding to ANSI. I was using Notepad++ with encoding UTF-8 and had the same problem. The problem disappeared after I change the file encoding to ANSI!
回答6:
File | Remove BOM in PhpStorm fixed this problem in both cases that I encountered it.
回答7:
Make sure there is no whitespace before your php tag
// whitespace
<?php
namespace HelloWorld
?>
Remove the white space before your php tag starts
<?php
namespace HelloWorld
?>
回答8:
The library isn't working at all, setSizeLimit is broken, setImageSize is ignored as-well, just don't use this.
$result = $newUpload
->setFileTypes(array("jpg", "gif", "png", "jpeg"))
->setSizeLimit(array("min"=>100, "max"=>100000))
->setImageSize(array("height"=>200, "width"=>200))
->uploadTo('ads/')
->save($_FILES['newad_image']);
$page.=$result;
Gives this:
Notice: Undefined offset: 1 in C:\xampp\htdocs\project\lib\ImageUploader.php on line 229
Notice: Undefined offset: 0 in C:\xampp\htdocs\project\lib\ImageUploader.php on line 229
EDIT: The size seems to be in Bytes, even though the error says Kilobytes.
回答9:
There is a mistake in its source. Check out its source if you may. It reads like this
<?php
class BulletProofException extends Exception{}
namespace BulletProof;
....
That is insane. Personally, I'd say the code is well documented, and elegant, but the author missed a simple point; he declared the namespace within the class. Namespace whenever used should be the first statement.
Too bad I am not in Github; could have pulled a request otherwise :(
回答10:
Edit ImageUploader.php - either remove line (cause BulletProofException not used anywhere)
class BulletProofException extends Exception{}
or move it under line
namespace BulletProof;
回答11:
If you look this file Namespace is not the first statement.
<?php
class BulletProofException extends Exception{}
namespace BulletProof;
You can try to move the namespace over the class definition.
回答12:
If you want to use this lib then in ImageUploader.php you should move BulletProofException definition after namespace declaration.
Submit pull-request for this issue to lib repo :)
EDIT: Make some changes in head of file:
namespace {
class BulletProofException extends Exception{}
}
namespace BulletProof {
class ImageUploader
{ ... }
}
回答13:
Namespace declarat 123456789101112
<?php
namespace app\controllers;
use yii\web\Controller;
use app\models\users;
class UserController extends Controller {
public function actionIndex() {
echo "working on .....";
}
}
回答14:
I fix it this way when I started doesn't matter utf8 just this way open <?php in the first line in the editor in my case sublime text and the namespace writte in the second line
2 <?php namespace mynamespace; //you should writte youe namespace down where you open php here should be in line 3 here I make the error cuz I started open from line 2 <?php
1 <?php
namespace mynamespace; // I started from line 1 <?php it WORK
回答15:
It is all about the namespace declaration. According to http://php.net/manual/en/language.namespaces.definition.php all namespace declaration must be put on the very top of the file after the <?php opening php tag. This means that before writing any code on the file, if that file needs to be contained in a namespace then you must first declare the namespace before writing any code. Like this:
<?php
namespace App\Suport\Facades;
class AuthUser {
// methods and more codes
}
BUT the declare keyword can be put before the namespace declaration so this is still valid:
<?php
declare(maxTries = 3);
namespace App\Suport\Facades;
class AuthUser {
// methods and more codes
}
all other stuff must be put AFTER the namespace keyword. For more info, read the http://php.net/manual/en/language.namespaces.definition.php.
回答16:
I just discovered an easy way to raise this exception; let your text editor default to saving as UTF-8. Unless you can force it to omit the Byte Order Mark, which may not be easy or even possible, depending on your editor, you'll have a "character" in front of the opening <, which will be hidden from view.
Fortunately, when that possibility crossed my mind, I switched my editor (UltraEdit) into hexadecimal mode, which hides nothing, not even Byte Order Marks. Having written code that processes Byte Order Marks for many years, I recognized it instantly.
Save file as ANSI/ASCII, and accept the default 1252 ANSI Latin-1 code page, problem solved!
回答17:
i also got the same problem by copying the controller code from another controller, then i solve the problem by removing the space before php tag
<?php
回答18:
In my case, the file was created with UTF-8-BOM encoding. I have to save it into UTF-8 encoding, then everything works fine.
回答19:
Sometimes the space after <?php visible if you are using the same editor, in my case I was using TextWrapper. Due to the file type configuration in the TextWrapper (in your case some other editor), you might not see the space. Use a different editor in your machine and you'll see it. Then remove them -- works perfectly afterward.
回答20:
UTF-8 Byte Order Mark at the beginning of the document^THIS for me solved the issue. I opened the inolved file with an HEX editor and removed the BOM at the start of the file.
回答21:
I had the same error message after running out of drive space. When I realized somehow the php file was corrupted, I copied the content and created a new file (I´m using Sublime Text for editing), and it solved my problem
来源：https://stackoverflow.com/questions/21433086/fatal-error-namespace-declaration-statement-has-to-be-the-very-first-statement