Get files from folder and delete them in php

Get files from folder and delete them in php:

function readDirectory_files(){

// get all file names

$files = glob('path/to/temp/*');

#OR

#$files = glob($FILE_PATH.'*');

foreach($files as $file){ // iterate files

if(is_file($file)){

echo '<pre>';

print_r($file);

echo '</pre>';

}

   

}

}