emulatorjs-GameLibrary/GamesLibrary.php

<?php
    $romdirectory = './roms/';
    $romlist = scandir($romdirectory);

    for($i=0; $i<count($romlist)-2; $i++) {
        $romlistfin[$i] = $romlist[$i + 2];
    }

    echo("<form action='GamesLibrary.php' method='GET' style='text-align:center;'><select name='games'>");
    for($i=0;$i<count($romlistfin);$i++) {
        $rom[$i] = getRomExtension($romlistfin[$i]);
        echo('<option value="'.$i.'">'.$rom[$i][0].'</option>');

    }
    echo("</select><input type='submit' value='Play'></form>");

    function getRomExtension($rom) {
        $romdata = explode(".", $rom);
        $romdata[2] = $rom;

        switch ($romdata[1]) {

            //NES formats
            case "nes":
                $romdata[1] = "nes";
                break;
            case "fds":
                $romdata[1] = "nes";
                break;
            case "unif":
                $romdata[1] = "nes";
                break;
            case "unf":
                $romdata[1] = "nes";
                break;

            //SNES formats
            case "smc":
                $romdata[1] = "snes";
                break;
            case "fig":
                $romdata[1] = "snes";
                break;
            case "sfc":
                $romdata[1] = "snes";
                break;
            case "gd3":
                $romdata[1] = "snes";
                break;
            case "gd7":
                $romdata[1] = "snes";
                break;
            case "dx2":
                $romdata[1] = "snes";
                break;
            case "bsx":
                $romdata[1] = "snes";
                break;
            case "swc":
                $romdata[1] = "snes";
                break;
            
            //Gameboy Formats
            case "gb":
                $romdata[1] = "gb";
                break;
            case "gbc":
                $romdata[1] = "gb";
                break;

            //Gameboy Advanced Formats
            case "gba":
                $romdata[1] = "gba";
                break;
            
            //Nintendo DS Formats
            case "nds":
               $romdata[1] = "nds"; 
               break;

            //Nintendo 64 Formats
            case "n64":
                $romdata[1] = "n64";
                break;
            case "z64";
                $romdata[1] = "z64";
                break;

            //Visual Boy Formats
            case "vb":
                $romdata[1] = "vb";
                break;

            //Sega Master System Formats
            case "sms":
                $romdata[1] = "segaMS";
                break;
            
            //Sega Mega Drive Formats
            case "md":
                $romdata[1] = "segaMD";
                break;
            
            //Sega Game Gear Formats
            case "gg":
                $romdata[1] = "segaGG";
                break;
            
            //Sega 32x Formats
            case "sega32x":
                $romdata[1] = "sega32x";
                break;
            
            //Atari 2600 Formats
            case "a26":
                $romdata[1] = "atari2600";
                break;
            
            //Atari 7800 Formats
            case "a78":
                $romdata[1] = "atari7800";
                break;

            //Atari Lynx Formats
            case "lnx":
                $romdata[1] = "lynx";
                break;

            //Atari Jaguar Formats
            case "j64":
                $romdata[1] = "jaguar";
                break;

         }

        return $romdata;
    }
?>

<div style='width:640px;height:480px;max-width:100%;margin:auto auto;'>
    <div id='game'></div>
</div>

<script type='text/javascript'>

    EJS_player = '#game';
    EJS_core = <?php echo("'".$rom[$_GET['games']][1]."'"); ?>;
    EJS_gameUrl = <?php echo('"./roms/'.$rom[$_GET['games']][2].'"'); ?>;
    EJS_gameID = <?php echo($_GET['games']); ?>;
    EJS_pathtodata = 'data/';
    
</script>

<script src='data/loader.js'></script>