Failed to open stream no such file or directory

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In PHP scripts, you must use include(), require(), fopen() or sus derivatives like include_once, require_onceo incluso, move_uploaded_file(), a menu being with an error or an announcement:

No se pudo abrir la transmission: no existent tal archivo o directorio.

¿Cuál es un buen proceso para encontrar rápidamente la cause raíz del problema?

  • php
  • require
  • open
  • include-ruta

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modified on August 19, 2017 at 10:13

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    I’ve cleaned up the off-topic comments on this post. Please keep meta discussions in the meta. However, please note that the discussion of the viability of canonical questions has been redone over and over again. See example here.

    – Madara’s Ghost

    April 13, 2016 at 2:17 PM

  • 1

    I got the same problem , the only solution which worked always is : -1 Go to the file to include , right botton , properties , copy the complete path For Example : C:/……../file.php 2- include it . Actually i saw that this question is answered , and the answer is validated , but for me in some cases didn’t work , till i find the way described above .

    –  Rshad Zhran

    May 13, 2017 at 13:38

  • @Rash thanks for contributing. Unfortunately your solution is wrong, because it will mention the absolute path name, and that is wrong. The reason why this is wrong, is because then the moment you copy your project somewhere else, or move it inside your computer, everything will break.

    –  Vic Seedoubleyew

    Jan 24, 2018 at 19:12

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Hay muchas razones por las que uno podría encontrarse con este error y, por lo tanto, una buena lista de verificación de lo que debe verificar primero ayuda considerablymente.

Examine the resolved issues with the following line:

requires “/path/to/file”

Check-list

1. Check the ruta del archivo en busca de errores typográficos

  • ya sea verific manually (verificando visualmente la ruta)
  • o mueva lo que sea llamado por require*o include*a su propia variable, repítalo, cópielo e intente acceder desde una terminal:

    $path = “/path/to/file”; echo “Path : $path”; require “$path”;

    Luego, en una terminal:

    cat <file path pasted>

2. Verifique que la ruta del archivo sea correcta con respecto a las consideraciones de ruta relativa frente a absoluta

  • si comienza con una barra diagonal “/”, entonces no se refiere a la raíz de la carpeta de su sitio web (la raíz del documento), sino a la raíz de su servidor.
    • por ejemplo, el directorio de su sitio web podría ser/users/tony/htdocs
  • if it is not starting by a forward slash then it is either relying on the include path (see below) or the path is relative. If it is relative, then PHP will calculate relatively to the path of the current working directory.
    • thus, not relative to the path of your web site’s root, or to the file where you are typing
    • for that reason, always use absolute file paths

Best practices :

In order to make your script robust in case you move things around, while still generating an absolute path at runtime, you have 2 options :

  1. use require __DIR__ . “/relative/path/from/current/file”. The __DIR__ magic constant returns the directory of the current file.
  2. define a SITE_ROOT constant yourself :

    • at the root of your web site’s directory, create a file, e.g. config.php
    • in config.php, write

      define(‘SITE_ROOT’, __DIR__);

    • in each file where you want to reference the site root folder, include config.php, then use the SITE_ROOT constant wherever you want:

      require_once __DIR__.”/../config.php”; … require_once SITE_ROOT.”/other/file.php”;

These 2 practices also make your app more portable as it doesn’t rely on ini settings like the include path.

3. Check your include path

Another way to include files, neither relative nor purely absolute, is to rely on the include path. This is often the case for libraries or frameworks such as the Zend framework.

Such an inclusion would look like this:

include “Zend/Mail/Protocol/Imap.php”

In this case, you’ll want to make sure that the folder where “Zend” is located is part of the include path.

You can check the include path with:

echo get_include_path();

You can add a folder to it with:

set_include_path(get_include_path().””:”.”/path/to/new/folder”); 4. Check that your server has access to this file

Overall, the user running the server process (Apache or PHP) may simply not have permission to read or write to this file.

To check which user the server is running as, you can use posix_getpwuid:

$user = posix_getpwuid(posix_geteuid()); var_dump($user);

To know the permissions on the file, type the following command in the terminal:

ls -l <path/to/file>

and look at the permission symbolic notation

5. Check PHP settings

If none of the above worked, the problem is probably that some PHP settings prohibit it from accessing this file.

Three parameters could be relevant:

  1. open_basedir
    • If this is set PHP won’t be able to access any file outside of the specified directory (not even through a symbolic link).
    • However, the default behavior is for it not to be set in which case there is no restriction
    • This can be checked by either calling phpinfo() or by using ini_get(“open_basedir”)
    • You can change the setting either by editing your php.ini file or your httpd.conf file
  2. safe mode
    • if this is turned on restrictions might apply. However, this has been removed in PHP 5.4. If you are still on a version that supports safe mode upgrade to a PHP version that is still being supported.
  3. allow_url_fopen and allow_url_include
    • this applies only to including or opening files through a network process such as http:// not when trying to include files on the local file system
    • cela peut être vérifié avec ini_get(“allow_url_include”) et défini avec ini_set(“allow_url_include”, “1”)

Caisses d’angle

Si aucune des réponses ci-dessus n’a permis de diagnostiquer le problème, voici quelques situations particulières qui pourraient se produire :

1. L’inclusion de la bibliothèque en s’appuyant sur le chemin d’inclusion

It may happen that you include a library, for example the Zend framework, using a relative or absolute path. For instance :

requires “/usr/share/php/libzend-framework-php/Zend/Mail/Protocol/Imap.php”

But then you still get the same kind of error.

This can happen because the file you (successfully) included has itself an include statement for another file, and this second include statement assumes that you added the path of this library to the path of inclusion.

For example, the previously mentioned Zend framework file might have the following:

include “Zend/Mail/Protocol/Exception.php”

qui n’est ni une inclusion par chemin relatif, ni par chemin absolu. Il suppose que le répertoire du framework Zend a été ajouté au chemin d’inclusion.

Dans un tel cas, la seule solution pratique consiste à ajouter le répertoire à votre chemin d’inclusion.

2. SELinux

Si vous utilisez Security-Enhanced Linux, cela pourrait être la raison du problème, en refusant l’accès au fichier depuis le serveur.

Pour vérifier si SELinux est activé sur votre système, exécutez la commande sestatus dans un terminal. Si la commande n’existe pas, alors SELinux n’est pas sur votre système. S’il existe, il devrait vous indiquer s’il est appliqué ou non.

To check if SELinux policies are causing the problem, you can try disabling it temporarily. However, be CAREFUL, as this will completely disable the protection. Don’t do this on your production server.

enforce 0

If you no longer have the problem with SELinux disabled, this is the root cause.

To solve it, you will need to configure SELinux accordingly.

The following types of context will be required:

  • httpd_sys_content_t for the files you want your server to read
  • httpd_sys_rw_content_t for files you want read and write access to
  • httpd_log_t for log files
  • httpd_cache_t for cache directory

For example, to assign the context type httpd_sys_content_t to the root directory of your website, run:

semanage fcontext -a -t httpd_sys_content_t “/path/to/root(/.*)?” restorecon -Rv /path/to/root

If your file is in a home directory, you will also need to enable the httpd_enable_homedirs boolean:

setsebool -P httpd_enable_homedirs 1

Either way, there could be various reasons why SELinux would deny access to a file, depending on your policies. So you will need to find out about it. Here is a tutorial specifically on setting up SELinux for a web server.

3. Symfony

If you are using Symfony and you encounter this error when uploading to a server, it may be that the application cache has not been reset, either because the application/cache has been downloaded or because the cache has not been cleared.

You can test and resolve this issue by running the following console command:

cache:clear 4. Non-ACSII characters in Zip file

Apparently this error can also occur when calling zip->close() when some files inside the zip contain non-ASCII characters in their filename, such as “é”.

A potential solution is to wrap the filename in utf8_decode() before creating the target file.

Thanks to Fran Cano for identifying and suggesting a solution to this problem

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modified on November 24, 2018 at 2:02

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answered on April 12, 2016 at 2:58 PM

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    I think mentioning selinux might be a good idea here. you’ll need at least httpd_sys_content_t (read-only directories and files used by apache) permission on included files.

    – bansi

    Apr 14, 2016 at 15:49

  • Thanks a lot for the suggestion. Since I am not familiar with SELinux, I did some reading and tried to answer this case. Please feel free to feedback or suggest some edits if it is not correct. Thanks again for the comment !

    –  Vic Seedoubleyew

    Apr 15, 2016 at 14:38

  • chcon is temporary and won’t survive a restorecon or a reboot. you may need to use semanage to change the file’s context. Here is a good simple tutorial for web site

    –  bansi

    Apr 16, 2016 at 7:12

  • Another possibility to add: realpath caching: lyte.id.au/2014/05/01/what-the-hell-php

    –  chrishiestand

    Jan 26, 2017 at 20:52

  • @chrishiestand thanks a lot ! That article is really interesting ! Do you remember what was the course of events that led to that error ? Was it that initially user didn’t have read access to a file, then it got changed, but the cache still considered it was not readable, so it threw that error upon file open ?

    –  Vic Seedoubleyew

    Jan 29, 2018 at 12:50

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To add to the (really good) existing answer

Shared Hosting Software

open_basedir is one that can stump you because it can be specified in a web server configuration. While this is easily remedied if you run your own dedicated server, there are some shared hosting software packages out there (like Plesk, cPanel, etc) that will configure a configuration directive on a per-domain basis. Because the software builds the configuration file (i.e. httpd.conf) you cannot change that file directly because the hosting software will just overwrite it when it restarts.

With Plesk, they provide a place to override the provided httpd.conf called vhost.conf. Only the server admin can write this file. The configuration for Apache looks something like this

<Directory /var/www/vhosts/domain.com> <IfModule mod_php5.c> php_admin_flag engine on php_admin_flag safe_mode off php_admin_value open_basedir “/var/www/vhosts/domain.com:/tmp:/usr/share/pear:/ local/PEAR” </IfModule> </Directory>

Ask your server administrator to consult the manual for the hosting and web server software they use.

File permissions

It is important to note that running a file through your web server is very different from running a command line or cron job. The big difference is that your web server has its own user and permissions. For security reasons, this user is quite restricted. Apache, for example, is often apache, www-data or httpd (depending on your server). A cron job or CLI run has all the permissions that the user running it has (i.e. running a PHP script as root will run with root’s permissions) .

Often people will fix a permissions problem by doing the following (Linux example)

chmod 777 /path/to/file

This is not a smart idea, because the file or directory is now world writable. If you own the server and are the only user then this isn’t such a big deal, but if you’re on a shared hosting environment you’ve just given everyone on your server access.

What you need to do is determine the user(s) that need access and give only those them access. Once you know which users need access you’ll want to make sure that

  1. That user owns the file and possibly the parent directory (especially the parent directory if you want to write files). In most shared hosting environments this won’t be an issue, because your user should own all the files underneath your root. A Linux example is shown below

    chown apache:apache /path/to/file

  2. The user, and only that user, has access. In Linux, a good practice would be chmod 600 (only owner can read and write) or chmod 644 (owner can write but everyone can read)

You can read a more extended discussion of Linux/Unix permissions and users here

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edited Jun 20, 2020 at 9:12

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answered Apr 22, 2016 at 13:34

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  1. Look at the exact error

My code worked fine on all machines, but only on this one started having a problem (which worked before, I guess). Used the path echo “document_root” to debug and also looked closely at the error, found this

Warning: include( D:/MyProjects/testproject//functions/connections.php ): Failed to open stream:

You can easily see where the problems are. Problems are // before functions

$document_root = $_SERVER[‘DOCUMENT_ROOT’]; echo “root: $document_root”; include($document_root.’/functions/connections.php’);

Il suffit donc de supprimer le connaissement / de l’inclusion et cela devrait fonctionner correctement. Ce qui est intéressant, c’est que ces comportements sont différents selon les versions. J’exécute le même code sur un ordinateur portable, un Macbook Pro et ce PC, tout a bien fonctionné jusqu’à. J’espère que cela aide quelqu’un.

  1. Copiez l’emplacement du fichier dans le navigateur pour vous assurer que le fichier existe. Parfois, les fichiers sont supprimés de manière inattendue (ce qui m’est arrivé) et c’était aussi le problème dans mon cas.

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modifié le 7 septembre 2018 à 10:11

répondu le 7 sept. 2018 à 8:42

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  • How is this different from step 1 in the checklist below?

    – Vic Seedoubleyew

    Sep 25, 2018 at 5:10 PM

  • Step 2 an additional check, not related to step 1. Just navigate to the proposed path in the browser and see if you see the file there (not in windows explorer but in the browser).

    – Hammad Khan

    Sep 27, 2018 @ 7:17 AM

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Samba Shares

If you have a Linux test server and are working from a Windows client, the Samba share is interfering with the chmod command. So even if you use:

chmod -R 777 myfolder

du côté Linux, il est tout à fait possible que le groupe Unix\www-data n’ait toujours pas d’accès en écriture. Une solution de travail si votre partage est configuré pour que les administrateurs Windows soient mappés à la racine : à partir de Windows, ouvrez les autorisations, désactivez l’héritage pour votre dossier avec copie, puis accordez un accès complet à www-data.

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répondu le 18 sept. 2019 à 21:22

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Ajouter un script avec des paramètres de requête

That was my case. It actually links to question #4485874, but I’m going to explain it here shortly. When you try to require path/to/script.php?parameter=value, PHP looks for file named script.php?parameter=value, because UNIX allows you to have paths like this. If you are really need to pass some data to included script, just declare it as $variable=… or $GLOBALS[]=… or other way you like.

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answered Aug 29, 2018 at 17:33

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The following PHP settings in php.ini if set to non-existent directory can also raise

PHP Warning: Unknown: failed to open stream: Permission denied in Unknown on line 0

sys_temp_dir upload_tmp_dir session.save_path

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answered on August 26, 2020 at 8:31 PM

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PHP – Failed to open stream: No such file or directory on mac

For example, I will upload an image. But I get this error. First, I will right click on the image and get information.

$thePathOfMyPicture = “/Users/misstugba/Desktop/”; use with function

if(move_uploaded_file($_FILES[“file”][“tmp_name”],$thePathOfMyPicture.$_FILES[“file”][“name”])){ echo “picture uploaded successfully”;

}Go to the description of the image above

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modified on July 7, 2021 at 8:13 PM

answered on Jul 7, 2021 at 10:15 AM

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For me, I got this error because I was trying to read a file that required HTTP authentication, with username and password. Hope this helps others. Maybe another corner case.

Edit

You can check if this type of authentication is present by inspecting the headers:

$file_headers = get_headers($url); if (!$file_headers) echo ‘Missing file headers’; else if (strpos($file_headers[0], ‘401 Unauthorized’) > -1) echo ‘401 Unauthorized’;

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modified on March 11, 2021 at 4:41 PM

answered on January 27, 2021 at 2:18 PM

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  • Can you share what was the exact line you were using? Did he use include, require or fopen?

    – Vic Seedoubleyew

    January 29, 2021 at 9:04 am

  • @VicSeedoubleyew $fp = fopen($file, ‘wb’); Non, je n’ai pas utilisé include ou require. Vous pouvez répliquer avec l’URL : 12345:[email protected]/datatransfer/files/products.zip

    – Sean H.

    29 janvier 2021 à 11:18

  • OK merci. Est-ce que fopen est la méthode recommandée pour lire à partir d’un emplacement HTTP ?

    – Vic Seedoubleyew

    1 févr. 2021 à 9:24

  • Je ne sais pas si c’est recommandé mais cela semble parfaitement valable. Vous en savez peut-être plus que moi à ce sujet

    – Sean H.

    2 février 2021 à 10:15

  • Je n’ai pas utilisé PHP depuis des années, donc je ne pouvais pas le dire. Je me demande simplement si la solution à votre situation consiste à ajouter un nom d’utilisateur et un mot de passe ou à utiliser une autre fonction.

    – Vic Seedoubleyew

    4 février 2021 à 9:25

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En PHP, démarrez Apache puis écrivez votre nom de base de données et votre mot de passe s’ils existent dans votre environnement (.env).

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modifié le 17 septembre 2021 à 0:11

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Besides the other great answers, one thing I forgot about Windows when writing a simple script: this error will show up when you try to open a file with characters that Windows doesn’t support in file names.

For instance:

$file = fopen(date(‘Ym-d_H:i:s’), ‘w+’);

Will give:

fopen(2022-06-01_22:53:03): Failed to open stream: No such file or directory in …

Windows does not like: in file names, as well as a number of other characters.

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answered Jun 1 at 20:54

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In PHP scripts, whether calling include(), require(), fopen(), or their derivatives such as include_once, require_once, or even, move_uploaded_file(), one often runs into an error or warning:

Échec de l’ouverture du flux : aucun fichier ou répertoire de ce type.

Quel est le bon processus pour trouver rapidement la cause première du problème ?

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modified on August 19, 2017 at 10:13

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asked on April 12, 2016 at 2:58 PM

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    I’ve cleaned up the off-topic comments on this post. Please keep meta discussions in the meta. However, please note that the discussion of the viability of canonical questions has been redone over and over again. See example here.

    – Madara’s Ghost

    April 13, 2016 at 2:17 PM

  • 1

    I got the same problem , the only solution which worked always is : -1 Go to the file to include , right botton , properties , copy the complete path For Example : C:/……../file.php 2- include it . Actually i saw that this question is answered , and the answer is validated , but for me in some cases didn’t work , till i find the way described above .

    –  Rshad Zhran

    May 13, 2017 at 13:38

  • @Rash thanks for contributing. Unfortunately your solution is wrong, because it will mention the absolute path name, and that is wrong. The reason why this is wrong, is because then the moment you copy your project somewhere else, or move it inside your computer, everything will break.

    –  Vic Seedoubleyew

    Jan 24, 2018 at 19:12

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There are many reasons why one can encounter this error and so a good checklist of what to check first helps considerably.

Consider that we are troubleshooting the following line:

requires “/path/to/file”

Control List

1. Check the file path for typos

  • either check manually (by visually checking the path)
  • ou déplacez tout ce qui est appelé par require* ou include* vers sa propre variable, faites-lui écho, copiez-le et essayez d’y accéder depuis un terminal :

    $chemin = “/chemin/vers/fichier” ; echo “Chemin : $chemin” ; requiert “$chemin” ;

    Puis, dans un terminal :

    chat <chemin du fichier collé>

2. Check that the file path is correct regarding relative vs absolute path considerations

  • if it is starting by a forward slash “/” then it is not referring to the root of your website’s folder (the document root), but to the root of your server.
    • for example, your website’s directory might be /users/tony/htdocs
  • if it is not starting by a forward slash then it is either relying on the include path (see below) or the path is relative. If it is relative, then PHP will calculate relatively to the path of the current working directory.
    • thus, not relative to the path of your web site’s root, or to the file where you are typing
    • for that reason, always use absolute file paths

Best practices :

In order to make your script robust in case you move things around, while still generating an absolute path at runtime, you have 2 options :

  1. use require __DIR__ . “/relative/path/from/current/file”. The __DIR__ magic constant returns the directory of the current file.
  2. define a SITE_ROOT constant yourself :

    • at the root of your web site’s directory, create a file, e.g. config.php
    • in config.php, write

      define(‘SITE_ROOT’, __DIR__);

    • in every file where you want to reference the site root folder, include config.php, and then use the SITE_ROOT constant wherever you like:

      require_once __DIR__.”/../config.php”; … require_once SITE_ROOT.”/other/file.php”;

These 2 practices also make your application more portable because it does not rely on ini settings like the include path.

3. Check your include path

Another way to include files, neither relative nor purely absolute, is to rely on the include path. This is often the case for libraries or frameworks such as the Zend framework.

Such an inclusion would look like this:

include “Zend/Mail/Protocol/Imap.php”

In this case, you’ll want to make sure that the folder where “Zend” is located is part of the include path.

You can check the include path with:

echo get_include_path();

You can add a folder to it with:

set_include_path(get_include_path().””:”.”/path/to/new/folder”); 4. Check that your server has access to this file

Overall, the user running the server process (Apache or PHP) may simply not have permission to read or write to this file.

To check which user the server is running as, you can use posix_getpwuid:

$user = posix_getpwuid(posix_geteuid()); var_dump($user);

To know the permissions on the file, type the following command in the terminal:

ls -l <path/to/file>

and look at the permission symbolic notation

5. Check PHP settings

Si rien de ce qui précède n’a fonctionné, le problème est probablement que certains paramètres PHP lui interdisent d’accéder à ce fichier.

Trois paramètres pourraient être pertinents :

  1. open_basedir
    • Si cela est défini, PHP ne pourra accéder à aucun fichier en dehors du répertoire spécifié (même pas via un lien symbolique).
    • Cependant, le comportement par défaut est qu’il ne soit pas défini, auquel cas il n’y a pas de restriction
    • Cela peut être vérifié en appelant phpinfo() ou en utilisant ini_get(“open_basedir”)
    • You can change the setting either by editing your php.ini file or your httpd.conf file
  2. safe mode
    • if this is turned on restrictions might apply. However, this has been removed in PHP 5.4. If you are still on a version that supports safe mode upgrade to a PHP version that is still being supported.
  3. allow_url_fopen and allow_url_include
    • this applies only to including or opening files through a network process such as http:// not when trying to include files on the local file system
    • this can be checked with ini_get(“allow_url_include”) and set with ini_set(“allow_url_include”, “1”)

Corner boxes

If none of the above enabled to diagnose the problem, here are some special situations that could happen:

1. The inclusion of library relying on the include path

It may happen that you include a library, for example the Zend framework, using a relative or absolute path. For instance :

requires “/usr/share/php/libzend-framework-php/Zend/Mail/Protocol/Imap.php”

But then you still get the same kind of error.

This can happen because the file you (successfully) included has itself an include statement for another file, and this second include statement assumes that you added the path of this library to the path of inclusion.

For example, the previously mentioned Zend framework file might have the following:

include “Zend/Mail/Protocol/Exception.php”

which is neither a relative path nor an absolute path inclusion. It assumes that the Zend framework directory has been added to the include path.

In such a case, the only practical solution is to add the directory to your include path.

2.SELinux

If you are using Security-Enhanced Linux, this could be the reason for the problem, denying file access from the server.

To check if SELinux is enabled on your system, run the sestatus command in a terminal. If the command does not exist, then SELinux is not on your system. If it exists, it should tell you whether it is applied or not.

To check if SELinux policies are causing the problem, you can try disabling it temporarily. However, be CAREFUL, as this will completely disable the protection. Don’t do this on your production server.

enforce 0

If you no longer have the problem with SELinux disabled, this is the root cause.

To solve it, you will need to configure SELinux accordingly.

The following types of context will be required:

  • httpd_sys_content_t for the files you want your server to read
  • httpd_sys_rw_content_t for files you want read and write access to
  • httpd_log_t for log files
  • httpd_cache_t for cache directory

For example, to assign the context type httpd_sys_content_t to the root directory of your website, run:

semanage fcontext -a -t httpd_sys_content_t “/path/to/root(/.*)?” restorecon -Rv /path/to/root

If your file is in a home directory, you will also need to enable the httpd_enable_homedirs boolean:

setsebool -P httpd_enable_homedirs 1

Either way, there could be various reasons why SELinux would deny access to a file, depending on your policies. So you will need to find out about it. Here is a tutorial specifically on setting up SELinux for a web server.

3. Symfony

If you are using Symfony and you encounter this error when uploading to a server, it may be that the application cache has not been reset, either because the application/cache has been downloaded or because the cache has not been cleared.

You can test and resolve this issue by running the following console command:

cache:clear 4. Non-ACSII characters in Zip file

Apparently this error can also occur when calling zip->close() when some files inside the zip contain non-ASCII characters in their filename, such as “é”.

A potential solution is to wrap the filename in utf8_decode() before creating the target file.

Thanks to Fran Cano for identifying and suggesting a solution to this problem

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modified on November 24, 2018 at 2:02

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answered on April 12, 2016 at 2:58 PM

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    Je pense que la mention de selinux peut être une bonne idée ici. vous aurez au moins besoin de l’autorisation httpd_sys_content_t (répertoires et fichiers en lecture seule utilisés par Apache) sur les fichiers inclus.

    – bansi

    14 avril 2016 à 15:49

  • Thanks a lot for the suggestion. Since I am not familiar with SELinux, I did some reading and tried to answer this case. Please feel free to feedback or suggest some edits if it is not correct. Thanks again for the comment !

    –  Vic Seedoubleyew

    Apr 15, 2016 at 14:38

  • chcon is temporary and won’t survive a restorecon or a reboot. you may need to use semanage to change the file’s context. Here is a good simple tutorial for web site

    –  bansi

    Apr 16, 2016 at 7:12

  • Another possibility to add: realpath caching: lyte.id.au/2014/05/01/what-the-hell-php

    –  chrishiestand

    Jan 26, 2017 at 20:52

  • @chrishiestand thanks a lot ! That article is really interesting ! Do you remember what was the course of events that led to that error ? Was it that initially user didn’t have read access to a file, then it got changed, but the cache still considered it was not readable, so it threw that error upon file open ?

    –  Vic Seedoubleyew

    Jan 29, 2018 at 12:50

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To add to the (really good) existing answer

Shared Hosting Software

open_basedir is one that can stump you because it can be specified in a web server configuration. While this is easily remedied if you run your own dedicated server, there are some shared hosting software packages out there (like Plesk, cPanel, etc) that will configure a configuration directive on a per-domain basis. Because the software builds the configuration file (i.e. httpd.conf) you cannot change that file directly because the hosting software will just overwrite it when it restarts.

With Plesk, they provide a place to override the provided httpd.conf called vhost.conf. Only the server admin can write this file. The configuration for Apache looks something like this

<Directory /var/www/vhosts/domain.com> <IfModule mod_php5.c> php_admin_flag engine on php_admin_flag safe_mode off php_admin_value open_basedir “/var/www/vhosts/domain.com:/tmp:/usr/share/pear:/ local/PEAR” </IfModule> </Directory>

Ask your server administrator to consult the manual for the hosting and web server software they use.

File permissions

It is important to note that running a file through your web server is very different from running a command line or cron job. The big difference is that your web server has its own user and permissions. For security reasons, this user is quite restricted. Apache, for example, is often apache, www-data or httpd (depending on your server). A cron job or CLI run has all the permissions that the user running it has (i.e. running a PHP script as root will run with root’s permissions) .

Often people will fix a permissions problem by doing the following (Linux example)

chmod 777 /path/to/file

This is not a smart idea, because the file or directory is now world writable. If you own the server and are the only user then this isn’t such a big deal, but if you’re on a shared hosting environment you’ve just given everyone on your server access.

What you need to do is determine the user(s) that need access and give only those them access. Once you know which users need access you’ll want to make sure that

  1. That user owns the file and possibly the parent directory (especially the parent directory if you want to write files). In most shared hosting environments this won’t be an issue, because your user should own all the files underneath your root. A Linux example is shown below

    chown apache:apache /path/to/file

  2. The user, and only that user, has access. In Linux, a good practice would be chmod 600 (only owner can read and write) or chmod 644 (owner can write but everyone can read)

You can read a more extended discussion of Linux/Unix permissions and users here

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edited Jun 20, 2020 at 9:12

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answered Apr 22, 2016 at 13:34

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  1. Look at the exact error

Mon code a bien fonctionné sur toutes les machines, mais seulement sur celle-ci a commencé à poser un problème (qui fonctionnait auparavant, je suppose). Utilisé le chemin echo “document_root” pour déboguer et a également examiné de près l’erreur, trouvé ceci

Avertissement : include( D:/MyProjects/testproject//functions/connections.php ) : échec de l’ouverture du flux :

Vous pouvez facilement voir où sont les problèmes. Les problèmes sont // avant les fonctions

$document_root = $_SERVER[‘DOCUMENT_ROOT’]; echo “root: $document_root”; include($document_root.’/functions/connections.php’);

So just remove the bill of lading / from the inclusion and it should work fine. What is interesting is that these behaviors are different depending on the version. I’m running the same code on a laptop, Macbook Pro and this PC, everything has worked fine so far. Hope this helps someone.

  1. Copy the file location to the browser to make sure the file exists. Sometimes files get deleted unexpectedly (which happened to me) and that was also the problem in my case.

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modified on September 7, 2018 at 10:11

answered Sep 7, 2018 at 8:42 am

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  • How is this different from step 1 in the checklist below?

    – Vic Seedoubleyew

    Sep 25, 2018 at 5:10 PM

  • Step 2 an additional check, not related to step 1. Just navigate to the proposed path in the browser and see if you see the file there (not in windows explorer but in the browser).

    – Hammad Khan

    Sep 27, 2018 @ 7:17 AM

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Samba Shares

If you have a Linux test server and are working from a Windows client, the Samba share is interfering with the chmod command. So even if you use:

chmod -R 777 myfolder

On the Linux side, it’s entirely possible that the Unix\www-data group still doesn’t have write access. A working solution if your share is configured to have windows admins mapped to root: from windows, open permissions, disable inheritance for your folder with copy, then grant full access to www-data.

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answered Sep 18, 2019 at 9:22 PM

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Add a script with query parameters

It was my case. It’s actually related to question #4485874, but I’ll explain it here shortly. When you try to require path/to/script.php?parameter=value, PHP looks for the file named script.php?parameter=value, because UNIX allows you to have paths like this. If you really need to pass data to the included script, just declare it as $variable=… or $GLOBALS[]=… or some other way you like.

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answered on August 29, 2018 at 5:33 PM

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The following PHP settings in php.ini, if set to a non-existent directory, may also generate

PHP warning: Unknown: Failed to open stream: Permission denied in Unknown on line 0

sys_temp_dir upload_tmp_dir session.save_path

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answered on August 26, 2020 at 8:31 PM

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PHP – Failed to open stream: No such file or directory on mac

For example, I will upload an image. But I get this error. First, I will right click on the image and get information.

$thePathOfMyPicture = “/Users/misstugba/Desktop/”; use with function

if(move_uploaded_file($_FILES[“file”][“tmp_name”],$thePathOfMyPicture.$_FILES[“file”][“name”])){ echo “picture uploaded successfully”;

}Go to the description of the image above

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modified on July 7, 2021 at 8:13 PM

answered on Jul 7, 2021 at 10:15 AM

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For me, I got this error because I was trying to read a file that required HTTP authentication, with username and password. Hope this helps others. Maybe another corner case.

Edit

You can check if this type of authentication is present by inspecting the headers:

$file_headers = get_headers($url); if (!$file_headers) echo ‘Missing file headers’; else if (strpos($file_headers[0], ‘401 Unauthorized’) > -1) echo ‘401 Unauthorized’;

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modified on March 11, 2021 at 4:41 PM

answered on January 27, 2021 at 2:18 PM

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  • Can you share what was the exact line you were using? Did he use include, require or fopen?

    – Vic Seedoubleyew

    January 29, 2021 at 9:04 am

  • @VicSeedoubleyew $fp = fopen($file, ‘wb’); No, I didn’t use include or require. You can replicate with the URL: 12345:[email protected]/datatransfer/files/products.zip

    –  Sean H

    Jan 29, 2021 at 11:18

  • Ok thanks. Is fopen the recommended way to read from an HTTP location?

    –  Vic Seedoubleyew

    Feb 1, 2021 at 9:24

  • I don’t know if it’s recommended but it seems perfectly valid. You may know more than me on this

    –  Sean H

    Feb 2, 2021 at 10:15

  • I haven’t used PHP for years so I couldn’t tell. I am just wondering whether the fix to your situation is to add username and password, or to use another function

    –  Vic Seedoubleyew

    Feb 4, 2021 at 9:25

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In PHP, start Apache then write you DB name and password if exist in your environment(.env).

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edited Sep 17, 2021 at 0:11

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answered Sep 16, 2021 at 10:21 PM

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Besides the other great answers, one thing I forgot about Windows when writing a simple script: this error will show up when you try to open a file with characters that Windows doesn’t support in file names.

For instance:

$file = fopen(date(‘Ym-d_H:i:s’), ‘w+’);

Will give:

fopen(2022-06-01_22:53:03): Failed to open stream: No such file or directory in …

Windows doesn’t like : in filenames, as well as a number of other characters.

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answered on June 1 at 8:54 PM

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Error loading stream id not found on server

Contents1 JWPlayer 6 error message “Error loading stream: ID not found on server”1.1 Inscrivez-vous ou connectez-vous1.2 Post as guest1.3 Post as guest2 Subscribe to RSS3 Problems with…