Getting PHP Git Deploy script to work on Windows

git-php-deploy.php

<?php
// Use in the "Post-Receive URLs" section of your GitHub repo.
$l_git = "/c/Program Files (x86)/Git/bin/git";
$l_sshadd = "/c/Program Files (x86)/Git/bin/ssh-add";

$w_agent = "C:\\Program Files (x86)\\Git\\bin\\ssh-agent.exe";
$w_bash =  "C:\\Program Files (x86)\\Git\\bin\\bash.exe";

$l_cmd = "'\"$l_sshadd\" /c/Users/myuser/.ssh/deploy; "
     . "cd /c/xampp/htdocs; "
     . "\"$l_git\" pull origin master'";
$exec = "\"$w_agent\" \"$w_bash\" -c $l_cmd 2>&1";
echo "Runnning...\n<br>";
$t0 = microtime(true);
echo "<pre>$exec</pre>";
echo shell_exec($exec);
$t = round(microtime(true) - $t0,3)*1000;
echo "<br>Done: $t ms";

?>