Pair / unpair {label} counter

counter.php

<?php
$path = getcwd();
echo "Scanning $path\n";
$it = new RecursiveDirectoryIterator($path);
$it = new RecursiveIteratorIterator($it, RecursiveIteratorIterator::LEAVES_ONLY);
$it = new RegexIterator($it, '~\.latte$~');

$countPair = 0;
$countUnpair = 0;
foreach ($it as $file) {
	echo $file, "\n";
	$s = file_get_contents((string) $file);
	$open = substr_count($s, '{label');
	$close = substr_count($s, '{/label');
	$countPair += $close;
	$countUnpair += $open - $close;
}

echo "Pair: $countPair\n";
echo "Unpair: $countUnpair\n";