html - PHP Search Sub-Directory for a specific file -

i've been looking solution problem. have website has many files in many sub-directories (all in 1 main directory). need search function can search part of name of file , return back. need function not case sensitive (i.e. if file name caps , user searches lower case should still find file). function have below works 1 directory , not work recursively.

please me modify code work multiple directories.

<?php $dirname = "./office precedents/";//directory search in. *must have trailing slash* $findme = $_post["search"];  $dir = opendir($dirname);  while(false != ($file = readdir($dir))){        //loop every item in directory.     if(($file != ".") , ($file != "..") , ($file != ".ds_store") , ($file != "search.php"))     {         //exclude these files search         $pos = stripos($file, $findme);         if ($pos !== false){            $thereisafile = true;//tell script found.            //display search results links.            echo'<a href="' . $dirname . $file . '">' . $file . '</a><br>';         }else{             //leave blank         }     } }  if (!isset($thereisafile)){     echo "nothing found.";//tell user nothing found.     echo '<img src="yourimagehere.jpg"/>';//display image, when nothing found. } ?> 

give try:

<?php //--- directories $dirname = ''; $findme  = "*.php"; $dirs    = glob($dirname.'*', glob_onlydir); $files   = array(); //--- search through each folder file //--- append results $files foreach( $dirs $d ) {     $f = glob( $d .'/'. $findme );     if( count( $f ) ) {         $files = array_merge( $files, $f );     } } if( count($files) ) {     foreach( $files $f ) {         echo "<a href='{$dirname}/{$f}'>{$f}</a><br>";     } } else {     echo "nothing found.";//tell user nothing found.     echo '<img src="yourimagehere.jpg"/>';//display image, when nothing found. } ?>