Retreiving files based on a particular pattern - php

Question

I am using this function to retreive files from directory and sub-directories.
How can I display only files with _lang.php within this directory and sub-directories?
function getDirContents($dir, &$results = array()){
$files = scandir($dir);
foreach($files as $key => $value){
$path = realpath($dir.DIRECTORY_SEPARATOR.$value);
if(!is_dir($path)) {
$results[] = $path;
} else if($value != "." && $value != "..") {
getDirContents($path, $results);
$results[] = $path;
}
}
return $results;
}
$dir = './test/';
var_dump(getDirContents($dir));

Answer 1

answered a question like this earlier, try using Iterator Classes
<?php
function getDirContents($directory, $pattern)
{
$result = array();
$objRecursiveDirectoryIterator = new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS);
$objRecursiveIteratorIterator = new RecursiveIteratorIterator($objRecursiveDirectoryIterator);
// use RegexIterator() to grab only files that match $pattern
$objRegexIterator = new RegexIterator($objRecursiveIteratorIterator, $pattern, RecursiveRegexIterator::GET_MATCH);
// iterate through all the results
foreach ($objRegexIterator as $arrMatches) {
$result[] = $arrMatches[0];
}
return $result;
}
$dir = './test/';
$arrDirContents = getDirContents($dir, "~^.+_lang\.php$~i");
var_dump($arrDirContents);