# Resize img with min/max + ratio

Hi all

IANAM (I am not a mathematician) and this is causing me some problems.

I need a function that scales down its input variables based on the min/max range

function imageResize(&\$width,&\$height,\$maxwidth,\$maxheight)
{

}

I want that both width and height are in range AND

originalsize/originalwidth ~= newwidth/newheight

I tried first calculating width, and then decreasing that until width*ratio<=maxheight but that gives result way too low!

Good luck

Ramses aka x_terminat_or_3
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Commented:
hi x_terminat_or_3,

Try the following:

<?php
function imageResize(&\$width,&\$height,\$maxwidth,\$maxheight) {
if (\$width < \$height) {
\$width = floor((\$maxheight / \$height) * \$width);
\$height = \$maxheight;
} else {
\$height = floor((\$maxwidth / \$width) * \$height);
\$width = \$maxwidth;
}
}

\$width = 1234;
\$height = 567;

imageResize(\$width,\$height,200,200);

echo "Width: \$width Height: \$height";
?>

Matt and i covered this topic with image uploads and resizing.

Diablo84

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Author Commented:
Thanks my man.  Ugly simple that.  Shame I didn't see it myself.

Anyway, thanks for the link as well, but I cannot rely on GD being available so I 'cheat' by just setting the width/height attributes on the image tag.

With kind regards

Ramses
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