PHP & .gitignore - Get list of exluded files in .gitignore file into array

php-gitignore.php

<?php
$root = '/xampp/htdocs/repo';
$iter = new RecursiveIteratorIterator(
	new RecursiveDirectoryIterator($root, RecursiveDirectoryIterator::SKIP_DOTS),
	RecursiveIteratorIterator::SELF_FIRST,
	RecursiveIteratorIterator::CATCH_GET_CHILD // Ignore "Permission denied"
);

function has_gitignore_file($dir) {
	return is_file("$dir/.gitignore");
}

echo "DIRS:<br>";
echo $root."<br>";
$gi = array();
if(has_gitignore_file($root)) {
	$gi[] = "$root/.gitignore";
}
foreach ($iter as $scanpath) {
    if (is_dir($scanpath) && strpos($scanpath,".git") == false) {
		$thisDir = str_replace("\\","/",$scanpath);
		echo $thisDir."<br>";
        if(has_gitignore_file($thisDir)) {
			$gi[] = $thisDir."/.gitignore";
		}
    }
}

echo "<br>.GITIGNORE FILES:<br>";
print_r($gi);

function parse_git_ignore_file($file) { # $file = '/absolute/path/to/.gitignore'
  $dir = dirname($file);
  $matches = array();
  $lines = file($file);
  foreach ($lines as $line) {
    $line = trim($line);
    if ($line === '') continue;                 # empty line
    if (substr($line, 0, 1) == '#') continue;   # a comment
    if (substr($line, 0, 1) == '!') {           # negated glob
      $line = substr($line, 1);
      $files = array_diff(glob("$dir/*"), glob("$dir/$line"));
    } else {                                    # normal glob
      $files = glob("$dir/$line");
    }
    $matches = array_merge($matches, $files);
  }
  return $matches;
}

echo "<br><br>FILES TO EXCLUDE:<br>";
$excluded = array();
foreach ($gi as $scanpath) {
	echo "<br>CHECKING: ".$scanpath."...<br>";
    $excludedTest = (parse_git_ignore_file($scanpath));
	if (count($excludedTest) > 0) {
		$excluded = array_merge($excluded, $excludedTest);
		echo 'FILES ADDED TO ARRAY<br>';
	} else {
		echo 'NOTHING TO EXCLUDE<br>';
	}
	print_r($excluded);
	echo "<br>";
}

echo "<br><br>EXCLUDED:<br>";
print_r($excluded);
echo "<br><br>";
?>