require(vendor/autoload.php): failed to open stream

I know that this issue has been posted many times, but for me it seems to be a different problem.

Indeed, this error

Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in C:xampphtdocssite_websend_mail.php on line 3

Fatal error: require(): Failed opening required 'vendor/autoload.php' (include_path='C:xamppphpPEAR') in C:xampphtdocssite_websend_mail.php on line 3

appears at the begining of my code from this line:

require 'vendor/autoload.php';


So, I guess there must be a /vendor/autoload.php file somewhere in my computer (I have installed composer and ran composer require phpmailer/phpmailer

composer require phpmailer/phpmailer

).

So, I looked for this file using: dir /s autoload.php in the Windows command line, and found one here: C:WindowsSysWOW64vendorautoload.php,

dir /s autoload.php

C:WindowsSysWOW64vendorautoload.php

but for me, syswow64 folder has nothing to see with autoload.php, I don't see what I am missing here.

Thanks

11 Answers
11

What you're missing is running composer install, which will import your packages and create the vendor folder, along with the autoload script.

composer install

Make sure your relative path is correct. For example the example scripts in PHPMailer are in examples/, below the project root, so the correct relative path to load the composer autoloader from there would be ../vendor/autoload.php.

examples/

../vendor/autoload.php

The autoload.php you found in C:WindowsSysWOW64vendorautoload.php is probably a global composer installation - where you'll usually put things like phpcs, phpunit, phpmd etc.

C:WindowsSysWOW64vendorautoload.php

composer install

composer.json

vendor

If you get the error also when you run

composer install


Just run this command first

composer dump-autoload


This command will clean up all compiled files and their paths.

@Bashir almost helped me but I needed:

composer update --no-scripts


I found the answer here:
https://laracasts.com/discuss/channels/general-discussion/fatal-error-class-illuminatefoundationapplication-not-found-in-pathtoprojectbootstrapappphp-on-line-14?page=0

autoload.php

A) Quick answer:

Your autoload.php path is wrong. ie. C:WindowsSysWOW64vendorautoload.php
To date: you need to change it to: C:Users<Windows User Name>vendorautoload.php

C:WindowsSysWOW64vendorautoload.php

C:Users<Windows User Name>vendorautoload.php

B) Steps with example:
We will take facebook/php-graph-sdk as an example; change to Package Name as needed.

Package Name

CMD

composer require facebook/graph-sdk

require_once 'C:Users<Windows User Name>vendorautoload.php';

Secrets

Access Token

C) Further details:

Installing composer on windows will set this default path for your pacakges; you can find them there and include the autoloader path:

C:Users<Windows User Name>vendor


For the same question you asked; the answer was this path for WAMP Server 64 BIT for Windows.

Then simply in your PHP Application change this:

require_once __DIR__ . '/vendor/autoload.php';


To:

require_once 'C:Users<Windows User Name>vendorautoload.php';


Find your windows username under C:Users

C:Users

Before all this, as pointed before in B) , you need to run this command:

composer require <package name>


for facebook php SDK for example:

composer require facebook/graph-sdk


^{Thank you for asking this question; appreciated as it helped me fix similar issue and ended writing this simple tutorial.}

I had this path in my machine:

C:/xampp5.0/htdocs/project-recordando-symfony/project-recordando-symfony


Then I ran composer install or/and composer update and it returned this error:

composer install

composer update

ErrorException ZipArchive::extractTo...


That error is because your path is too much long, I changed to:

C:/xampp5.0/htdocs/p-symfony/*


and worked!

First make sure you have installed the composer.

composer install


If you already have installed then update the composer.

update composer


I was able to resolve by removing composer and reinstalling the proper way. Here is what I did:

I was then able to get composer install to work again. Found my answer at the bottom of this issue: https://github.com/composer/composer/issues/5510

run composer update. That's it

Change the auto_prepend_file property on php.ini

; Automatically add files before PHP document.
;http://php.net/auto-prepend-file
auto_prepend_file =


Only this: composer require symfony/finder

***PHP Warning: require_once(C:xampphtdocstest1/bootstrap/app.php): failed to open stream: No such file or directory in C:xampphtdocstest1artisan on line 20
Warning: require_once(C:xampphtdocstest1/bootstrap/app.php): failed to open stream: No such file or directory in C:xampphtdocstest1artisan on line 20
PHP Fatal error: require_once(): Failed opening required 'C:xampphtdocstest1/bootstrap/app.php' (include_path='C:xamppphpPEAR') in C:xampphtdocstest1artisan on line 20

This problem due to the missing of bootstrap file in your project folder..This problem can not fix by using reinstalling or updating composer..
you can fix by using : if you have another project available just open that project and copy bootstrap file folder and past to your missing project folder for example:
i have two project test 1 and test 2
(you can create your project by using cmd => Composer create-project laravel/laravel test 1 ) now go to atom and open project test 1 and test 2 . this error occurs in test 1,you can just copy bootstrap file from test 2 and past to test 1.save changes.. then go to cmd just type php artisan serve .. then your problem is solved.

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