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copied!<p><code>shell_exec</code> is going to return <code>NULL</code> if the command fails. This is almost certainly happening... the question is why. You aren't going to be able to find out using <code>shell_exec</code>.</p> <p>I'd recommend instead using exec, so you can at least figure out the status of the call and what's going wrong.</p> <p><a href="http://www.php.net/manual/en/function.exec.php" rel="nofollow noreferrer">http://www.php.net/manual/en/function.exec.php</a></p> <p>This will allow you to setup some vars that will be populated with the return values of the system's internal os call.</p> <pre><code>$shell_output = array(); $status = NULL; if($_GET['action']=='add'){ $output = shell_exec('git add *',$shell_output,$status); print_r($shell_output) print_r($status); } if($_GET['action']=='commit'){ $output = shell_exec('git commit -m "'.$_POST["txt"].'" ',$shell_output,$status); print_r($shell_output) print_r($status); } </code></pre> <p>My guess is you have a problem with permissions. A <code>commit</code> in git requires write permission to that directory's '.git' folder.</p> <p>Also, make sure you are operating in the proper directory! The apache user that is running the PHP instance may or may not be already <code>cd</code>ed to the right folder where the repo is. You may need to add a <code>cd path_to_repo && git commit</code> to your command to first move to the right directory. I'd first debug this with absolute paths.</p> <p>Just a word of advice as well... if you are trying to set up a PHP based git client, you are going to have to handle a ton of fail cases, one of which is readily apparent in this code... attempting a commit when no new files have been modified. I'd encourage you to look at community solutions if you need to be concerned with these cases:</p> <p><a href="https://stackoverflow.com/questions/9284283/is-there-a-good-php-git-client-with-http-support">Is there a good php git client with http support?</a></p>

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