php code for finding multiple images' dpi

[arjdat]

i have the following php code to find image's dpi

<?php
function get_dpi($filename){ 
$a = fopen($filename,'r'); 
$string = fread($a,20); 
fclose($a); 
$data = bin2hex(substr($string,14,4)); 
$x = substr($data,0,4); 
$y = substr($data,4,4); 
return array(hexdec($x),hexdec($y)); 
} 
print_r(get_dpi('C:/tv1.jpg')); 
?>

how do i use this to find all images' dpi in a folder and output to html?
thanks in advance

 

[buzzycoder]

This might help you: http://techya.wordpress.com/2013/04/12/fetch-images-from-directory/