Get image`s size & dpi
Get image information size & dpi
<?php function get_dpi($filename){ // open the file and read first 20 bytes. $a = fopen($filename,'r'); $string = fread($a,20); fclose($a); // get the value of byte 14th up to 18th $data = bin2hex(substr($string,14,4)); $x = substr($data,0,4); $y = substr($data,4,4); return array(hexdec($x),hexdec($y)); } // output the result: $filename = $_SERVER["DOCUMENT_ROOT"] . '/temas/default/imgs/pt/