PHP's getimagesize function return

<?php
$getimagesize = getimagesize('example/image/path/file.png');
print_r($getimagesize);
exit;
/*
THE ABOVE CODE OUTPUTS:
Array
(
    [0] => 1748
    [1] => 1165
    [2] => 2
    [3] => width="1748" height="1165"
    [bits] => 8
    [channels] => 4
    [mime] => image/jpeg
)
*/