List of Files in Folder (PHP)

list-of-files-in-folder.php

// folder path and 
// limits of selected files, *.* = all files
$folder = 'upload/profiles/2018-11/*.*';

// searched extensions
$ext_array = ['gif','jpg','jpeg','png'];

// get all files
$files = glob($folder);

// if there is any file
if ($files && is_array($files)){
    // loop in $files
    foreach ($files as $file){
        // get file ext
        $file_ext = pathinfo($file, PATHINFO_EXTENSION);

        // if tehre is valid ext and searhed ext
        if ($file_ext && in_array($file_ext, $ext_array)){
            echo "<img src=\"{$file}\">";
        }
    }
} else {
    echo 'there is no file';
}