My file .htaccess handles all requests from /word_here to my internal endpoint /page.php?name=word_here. The PHP script then checks if the requested page is in its array of pages.
If not, how can I simulate an error 404?
I tried this, but it didn’t result in my 404 page configured via ErrorDocument in the .htaccess showing up.
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
Am I right in thinking that it’s wrong to redirect to my error 404 page?
asked Sep 4, 2009 at 19:29
2
The up-to-date answer (as of PHP 5.4 or newer) for generating 404 pages is to use http_response_code:
<?php
http_response_code(404);
include('my_404.php'); // provide your own HTML for the error page
die();
die() is not strictly necessary, but it makes sure that you don’t continue the normal execution.
answered Jan 11, 2017 at 14:28
bladeblade
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2
What you’re doing will work, and the browser will receive a 404 code. What it won’t do is display the «not found» page that you might be expecting, e.g.:
Not Found
The requested URL /test.php was not found on this server.
That’s because the web server doesn’t send that page when PHP returns a 404 code (at least Apache doesn’t). PHP is responsible for sending all its own output. So if you want a similar page, you’ll have to send the HTML yourself, e.g.:
<?php
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found", true, 404);
include("notFound.php");
?>
You could configure Apache to use the same page for its own 404 messages, by putting this in httpd.conf:
ErrorDocument 404 /notFound.php
Kzqai
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answered Sep 4, 2009 at 19:50
JW.JW.
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3
Try this:
<?php
header("HTTP/1.0 404 Not Found");
?>
answered Sep 4, 2009 at 19:36
Ates GoralAtes Goral
138k26 gold badges137 silver badges190 bronze badges
2
Create custom error pages through .htaccess file
1. 404 — page not found
RewriteEngine On
ErrorDocument 404 /404.html
2. 500 — Internal Server Error
RewriteEngine On
ErrorDocument 500 /500.html
3. 403 — Forbidden
RewriteEngine On
ErrorDocument 403 /403.html
4. 400 — Bad request
RewriteEngine On
ErrorDocument 400 /400.html
5. 401 — Authorization Required
RewriteEngine On
ErrorDocument 401 /401.html
You can also redirect all error to single page. like
RewriteEngine On
ErrorDocument 404 /404.html
ErrorDocument 500 /404.html
ErrorDocument 403 /404.html
ErrorDocument 400 /404.html
ErrorDocument 401 /401.html
answered Mar 30, 2016 at 10:34
Irshad KhanIrshad Khan
5,6682 gold badges44 silver badges39 bronze badges
1
Did you remember to die() after sending the header? The 404 header doesn’t automatically stop processing, so it may appear not to have done anything if there is further processing happening.
It’s not good to REDIRECT to your 404 page, but you can INCLUDE the content from it with no problem. That way, you have a page that properly sends a 404 status from the correct URL, but it also has your «what are you looking for?» page for the human reader.
answered Sep 4, 2009 at 19:50
EliEli
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Standard Apache 404 error looks like this:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL was not found on this server.</p>
</body></html> Thus, you can use the following PHP code to generate 404 page that looks exactly as standard apache 404 page:
function httpNotFound()
{
http_response_code(404);
header('Content-type: text/html');
// Generate standard apache 404 error page
echo <<<HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL was not found on this server.</p>
</body></html>
HTML;
exit;
}
answered Mar 20 at 16:14
Dima L.Dima L.
3,45333 silver badges30 bronze badges
try putting
ErrorDocument 404 /(root directory)/(error file)
in .htaccess file.
Do this for any error but substitute 404 for your error.
StackedQ
3,9991 gold badge27 silver badges41 bronze badges
answered May 20, 2018 at 19:41
I like this function in PHP the most
http_response_code(404)
If you need to use .statusText in JavaScript you better use this function instead
header("HTTP/1.0 404 Not Found")
answered Sep 12 at 21:44
In the Drupal or WordPress CMS (and likely others), if you are trying to make some custom php code appear not to exist (unless some condition is met), the following works well by making the CMS’s 404 handler take over:
<?php
if(condition){
do stuff;
} else {
include('index.php');
}
?>
answered Jan 28, 2019 at 19:38
Mike GodinMike Godin
3,7473 gold badges27 silver badges29 bronze badges
Immediately after that line try closing the response using exit or die()
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
exit;
or
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
die();
answered May 25, 2018 at 4:22
4
try this once.
$wp_query->set_404();
status_header(404);
get_template_part('404');
answered Mar 31, 2020 at 4:24
1
My file .htaccess handles all requests from /word_here to my internal endpoint /page.php?name=word_here. The PHP script then checks if the requested page is in its array of pages.
If not, how can I simulate an error 404?
I tried this, but it didn’t result in my 404 page configured via ErrorDocument in the .htaccess showing up.
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
Am I right in thinking that it’s wrong to redirect to my error 404 page?
asked Sep 4, 2009 at 19:29
2
The up-to-date answer (as of PHP 5.4 or newer) for generating 404 pages is to use http_response_code:
<?php
http_response_code(404);
include('my_404.php'); // provide your own HTML for the error page
die();
die() is not strictly necessary, but it makes sure that you don’t continue the normal execution.
answered Jan 11, 2017 at 14:28
bladeblade
12.1k7 gold badges37 silver badges38 bronze badges
2
What you’re doing will work, and the browser will receive a 404 code. What it won’t do is display the «not found» page that you might be expecting, e.g.:
Not Found
The requested URL /test.php was not found on this server.
That’s because the web server doesn’t send that page when PHP returns a 404 code (at least Apache doesn’t). PHP is responsible for sending all its own output. So if you want a similar page, you’ll have to send the HTML yourself, e.g.:
<?php
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found", true, 404);
include("notFound.php");
?>
You could configure Apache to use the same page for its own 404 messages, by putting this in httpd.conf:
ErrorDocument 404 /notFound.php
Kzqai
22.6k25 gold badges105 silver badges137 bronze badges
answered Sep 4, 2009 at 19:50
JW.JW.
50.7k36 gold badges115 silver badges143 bronze badges
3
Try this:
<?php
header("HTTP/1.0 404 Not Found");
?>
answered Sep 4, 2009 at 19:36
Ates GoralAtes Goral
138k26 gold badges137 silver badges190 bronze badges
2
Create custom error pages through .htaccess file
1. 404 — page not found
RewriteEngine On
ErrorDocument 404 /404.html
2. 500 — Internal Server Error
RewriteEngine On
ErrorDocument 500 /500.html
3. 403 — Forbidden
RewriteEngine On
ErrorDocument 403 /403.html
4. 400 — Bad request
RewriteEngine On
ErrorDocument 400 /400.html
5. 401 — Authorization Required
RewriteEngine On
ErrorDocument 401 /401.html
You can also redirect all error to single page. like
RewriteEngine On
ErrorDocument 404 /404.html
ErrorDocument 500 /404.html
ErrorDocument 403 /404.html
ErrorDocument 400 /404.html
ErrorDocument 401 /401.html
answered Mar 30, 2016 at 10:34
Irshad KhanIrshad Khan
5,6682 gold badges44 silver badges39 bronze badges
1
Did you remember to die() after sending the header? The 404 header doesn’t automatically stop processing, so it may appear not to have done anything if there is further processing happening.
It’s not good to REDIRECT to your 404 page, but you can INCLUDE the content from it with no problem. That way, you have a page that properly sends a 404 status from the correct URL, but it also has your «what are you looking for?» page for the human reader.
answered Sep 4, 2009 at 19:50
EliEli
97.6k20 gold badges76 silver badges81 bronze badges
Standard Apache 404 error looks like this:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL was not found on this server.</p>
</body></html> Thus, you can use the following PHP code to generate 404 page that looks exactly as standard apache 404 page:
function httpNotFound()
{
http_response_code(404);
header('Content-type: text/html');
// Generate standard apache 404 error page
echo <<<HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL was not found on this server.</p>
</body></html>
HTML;
exit;
}
answered Mar 20 at 16:14
Dima L.Dima L.
3,45333 silver badges30 bronze badges
try putting
ErrorDocument 404 /(root directory)/(error file)
in .htaccess file.
Do this for any error but substitute 404 for your error.
StackedQ
3,9991 gold badge27 silver badges41 bronze badges
answered May 20, 2018 at 19:41
I like this function in PHP the most
http_response_code(404)
If you need to use .statusText in JavaScript you better use this function instead
header("HTTP/1.0 404 Not Found")
answered Sep 12 at 21:44
In the Drupal or WordPress CMS (and likely others), if you are trying to make some custom php code appear not to exist (unless some condition is met), the following works well by making the CMS’s 404 handler take over:
<?php
if(condition){
do stuff;
} else {
include('index.php');
}
?>
answered Jan 28, 2019 at 19:38
Mike GodinMike Godin
3,7473 gold badges27 silver badges29 bronze badges
Immediately after that line try closing the response using exit or die()
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
exit;
or
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
die();
answered May 25, 2018 at 4:22
4
try this once.
$wp_query->set_404();
status_header(404);
get_template_part('404');
answered Mar 31, 2020 at 4:24
1
header("HTTP/1.0 404 Not Found");
header("HTTP/1.1 404 Not Found");
header("Status: 404 Not Found");— не работает
-
Вопрос задан
-
13476 просмотров
В помощь Вам http-response-code(404) клац
писать до любого вывода
Пригласить эксперта
Ставьте error_reporting(-1); в начале кода и смотрите что не так.
Скорее всего перед header() был вывод данных.
А может вы что-то не так поняли? Ваш код всего-лишь объявляет, что данная страница — страница ошибки. Чтобы именно вызвать 404 попробуйте exit(header('Location: /error404/'));
Попробуйте добавить exit(); сразу после вызова header();
Так-же перед вызовом header(); у Вас не должно быть вывода информации, если первый вариант не помог, попробуйте убрать закрывающий PHP тег ?> (если он есть)
На самом деле Вы всего лишь отправили заголовок, чтобы показать страницу нужно взять include или заголовок location.
-
Показать ещё
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Минуточку внимания
In this tutorial, we are going to show you how to send a “404 Not Found” header using PHP.
This can be especially useful in cases when you need to display a 404 message if a particular database record does not exist.
By sending a 404 HTTP status code to the client, we can tell search engines and other crawlers that the resource does not exist.
To send a 404 to the client, we can use PHP’s http_response_code function like so.
//Send 404 response to client. http_response_code(404) //Include custom 404.php message include 'error/404.php'; //Kill the script. exit;
Note that this function is only available in PHP version 5.4 and after.
If you are using a PHP version that is older than 5.4, then you will need to use the header function instead.
//Use header function to send a 404 header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found", true, 404); //Include custom message. include 'errors/404.php'; //End the script exit;
In the code above, we.
- Send the response code to the client.
- We include a PHP file that contains our custom “404 Not Found” error. This file is not mandatory, so feel free to remove it if you want to.
- We then terminated the PHP script by calling the exit statement.
If you run one of the code samples above and check the response in your browser’s developer tools, then you will see something like this.
Request URL:http://localhost/test.php Request Method:GET Status Code:404 Not Found Remote Address:[::1]:80 Referrer Policy:no-referrer-when-downgrade
Note the Status Code segment of the server’s HTTP response. This is the 404 header.
When should I use this?
In most cases, your web server will automatically handle 404 errors if a resource does not exist.
However, what happens if your script is dynamic and it selects data from your database? What if you have a dynamic page such as users.php?id=234 and user 234 does not exist?
The file users.php will exist, so your web server will send back a status of “200 OK”, regardless of whether a user with the ID 234 exists or not.
In cases like this, we may need to manually send a 404 Not Found header.
Why isn’t PHP showing the same 404 message as my web server?
You might notice that your web server does not serve its default “404 Not Found” error message when you manually send the header with PHP.
The default message that Apache displays whenever a resource could not be found.
This is because, as far as the web server is concerned, the file does exist and it has already done its job.
One solution to this problem is to make sure that PHP and your web server display the exact same 404 message.
For example, with Apache, you can specify the path of a custom error message by using the ErrorDocument directive.
ErrorDocument 404 /errors/404.php
The Nginx web server also allows you to configure custom error messages.
Я решил перенести большую часть файлов со старого сайта на новый. И у меня возник вопрос — «А не обвинит ли меня Yandex в использовании неуникальных статей?», т.к. у меня одни и те же материалы будут на разных страницах.
Я написал письмо в службу поддержки yandex, и мне пришло письмо, в котором сообщалось, что переживать не надо. Единственно, настоятельно желательно, чтобы я каким-то способом закрыл старые странички от индексирования (через robots.txt, вызов ошибки 404 или перенаправление) и удалил странички из базы по адресу http://webmaster.yandex.ru/delurl.xml. Удалять по указанному адресу желательно, чтобы быстрее прекратилась индексация страниц.
По некоторым причинам я предпочел способ вызова ошибки 404. Ошибка 404 вызывается в том случае, если ресурс на который идет ссылка не обнаружен. И тут я обнаружил, что у меня то и нет вызова этой ошибки, т.е. какие бы данные пользователь не ввел бы на старом сайте, что-то все равно выводится. Такая ситуация на мой взгляд не допустима, и я пошел с ней бороться.
Мой сайт написан был на php, поэтому я очень быстро нашел команду для вызова ошибки 404. Она имеет вид:
header("HTTP/1.0 404 Not Found");
exit;
Казалось бы все просто, но нет же. Никак эти две команды не хотели работать. Тогда я почитал дополнительно материал и выяснил, что header() должна вызываться до отправки любого другого вывода. Т.е. она должна быть исключительно самой первой при выводе, поэтому ее нельзя использовать внутри require_once().
Но как оказалось существуют три замечательные функции, которые позволяют решить эту проблему:
-
ob_start() — задает начало области, которую надо поместить в буфер, я поместил ее самой первой при выводе.
- ob_end_flush() — окончание задания буфер и сразу вывод. Т.е. первые две функции задают область, которую сначала нужно вывести в буфер, а потом сразу вывести.
- ob_end_clean() — очищает буфер, и следующая команда как бы выводится самой первой.
С использованием этих команд организация вызова ошибки 404 выглядит следующим образом:
- Самая первая команда — ob_start()
- Далее идет основное содержание, которое пока копируется в буфер.
- Проверка на предмет вызова ошибки 404. Например, проверка наличия определенного значения. Если после проверки имеются причины вызвать ошибку, то задается код:
ob_end_clean() ; header("HTTP/1.0 404 Not Found"); exit;Тем самым будет выдано сообщение об ошибке и осуществлен выход.
- Выводим содержимое буфера командой ob_end_flush(). Идея в том, что если была вызвана ошибка, то сюда не попадем. Если ошибки не было, то выводим буфер.
Далее в файле .htaccess можно указать файл, который будет сопоставляться ошибке 404, но это уже совершенно другая история…