I am attempting to install the following API - http://paypal.github.io/sdk/#adaptive-payments
I downloaded the SDK, unziped it, then ran "curl https://raw.github.com/paypal/adaptivepayments-sdk-php/stable-php5.3/samples/install.php | php" as instructed, via shell_exec since I can't install composer(I'm using shared hosting with no ssh access). I also tried system, didn't work. What do you guys think the issue is?
just download the SDK
If you do not want to use composer, you can grab the SDK zip, unzip the file to your application folder and require the 'vendor/autoload.php' file. This file registers a custom autoloader that can autload the PayPal SDK files. Links Download SDK Source at https://github.com/paypal/rest-api-sdk-php
and add it to your project, then customise the php file to your need.
they have paypal test so you can create a test account to see if your application is working