getimagesize function is not working properly

Question

I created a function, i am using this function to resize image to make it fit as div background image, i send div size and image path to function.. It works well when height is bigger than width but it does not work when width is bigger than height.. How can this be possible?

function imgw($divsize, $imgw){
$imgurl=$_SERVER["DOCUMENT_ROOT"]."/".$imgw;
list($width, $height) = getimagesize($imgw);
if($width > $height){$nwidth="auto";}
if($width < $height){$nwidth=$divsize."px";}
if($width==$height){$nwidth=$divsize."px";}
return $nwidth;
}

function imgh($divsize, $imgh){
$imgurl=$_SERVER["DOCUMENT_ROOT"]."/".$imgh;
list($width, $height) = getimagesize($imgurl);
if($width > $height){$nheight=$divsize."px";}
if($width < $height){$nheight="auto";}
if($width==$height){$nheight=$divsize."px";}
return $nheight;
}

Edit: This functions are used for the following code below.

<? $anwidth=imgw(70, $solsutunpic); $anheight=imgh(70, $solsutunpic);?>
<div style='background: url(<?php echo $solsutunpic ?>) no-repeat; background-size: <?php echo $anwidth ?> <?php echo $anheight ?>; width: 70px; height: 70px; display:inline-block; border-radius: 3px; margin-right:5px;'></div>

Answer 1

You have a typo in function imgw($divsize, $imgw)

list($width, $height) = getimagesize($imgw);

right code

list($width, $height) = getimagesize($imgurl);