Rename .srt files to match .avi filenames

Movie subtitle renamer

<?php

$files = scandir(__DIR__);

$pairs = array();

foreach($files as $file){

	$type = null;
	if (strpos($file,'.srt') !== false) {
		$type = 'srt';
	}

	if (strpos($file,'.avi') !== false) {
		$type = 'avi';
	}

	if($type === null){	
		continue;
	}

	preg_match("/.*(S\d+E\d+).*/", $file, $res);

	if(isset($res[1])){
		$pairs[$res[1]][$type] = $file;
	}
}

foreach($pairs as $episode => $pair){
	$oldName = $pair['srt'];

	$newName = $pair['avi'];
	$newName = str_replace('.avi', '.srt', $newName);
	echo 'Renaming ' . $oldName . ' to ' . $newName . PHP_EOL;
	rename($oldName, $newName);
}