Sandbox - is composer necessary to run?

[mcmstart]

Hi, I have not installed composer because the hello world says you don't necessarily have to - but I have not gotten it to run. I followed the instructions here:

http://developer.authorize.net/hello_world/

The SDK is installed, plus charge-credit-card.php

My errors are as follows:

Warning: require(vendor\autoload.php) [function.require]: failed to open stream: No such file or directory in /home/starticr/public_html/webwork/authorize-sandbox/charge-credit-card.php on line 2

Warning: require(vendor\autoload.php) [function.require]: failed to open stream: No such file or directory in /home/starticr/public_html/webwork/authorize-sandbox/charge-credit-card.php on line 2

Fatal error: require() [function.require]: Failed opening required 'vendor\autoload.php' (include_path='.:/opt/alt/php53/usr/share/pear:/opt/alt/php53/usr/share/php') in/home/starticr/public_html/webwork/authorize-sandbox/charge-credit-card.php on line 2

I know it's looking for autoload.php - which is in the root directory of the test link. But if I change the path from vendor\autoload.php to just autoload.php, it gives me different warnings/errors and still doesn't run.

I believe the problem is that Composer is not installed. But is there a way to do this without Composer? My next step will be to install Composer.

I copied the code directly from http://developer.authorize.net/hello_world/ - I replaced setName and setTransactionKey values with the values that were given to me from the Sandbox login.

Here is my test link:

http://startwebservices.com/webwork/authorize-sandbox/charge-credit-card.php

Can anyone give me direction here? Do I just need to install composer? I would really appreciate some help, thanks!

[mcmstart]

Also if Composer is not installed, where does the vendor folder come from?

[RichardH]

Hello @mcmstart

If you are using our SDK, then yes Composer is required.  Your other option is to use our API and handle your own XML/JSON request and responses.

Richard

[mcmstart]

Thanks for the response Richard. I've been following the steps to install composer to my sandbox test directory, but it won't install the components.

composer.phar is installed in a directory called authorize-sandbox, and all of the Authorize.net sandbox files are also in this directory, including composer.json. I ran this line:

php /home/starticr/public_html/webwork/authorize-sandbox/composer.phar install

but it tells me:

Composer could not find a composer.json file in /home/starticr

It's apparently looking in the wrong place for the composer.json file.

Do you know what I'm doing wrong here?