Not familiar with this syntax

[brandondrury]

$ratio = ($width > $height) ? $th_max_width/$width : $th_max_height/ $height; 

I've got a question about the syntax of this code. I'm tinkering around with resizing images. This is the code that apparently figures out how to keep the dimensions proportional.

However, the question mark is really throwing me off.

I'll take a stab at this one just to see if I'm right or even close.

If ($width > $height) {$th_max_width/$width } else {$th_max_height/ $height; }

Well, that's not it. It's clear that this is some kind of ratio (DUH!). Hmm.

Brandon

[Kailash Badu]

well,
if width is greater than height, $ratio is assigned the value of
$th_max_width/$width
else $ratio is assigned the value of
$th_max_height/ $height

[Kailash Badu]

go through this, espcially the last comment.
http://www.php.net/manual/en/control...ive-syntax.php

[shn]

Hi Brandon,

except from the fact, that you forgot to assign the calculated values to $ratio, you got it absolutely right. See PHP Mnual: Ternary Operator for more Information.

[brandondrury]

Okay. Makes sense now.

I wasn't aware of this alternate syntax junk.

Is there any benefit to using it?

Brandon

[brandondrury]

except from the fact, that you forgot to assign the calculated values to $ratio, you got it absolutely right.

Cool. I meant to put the $ratio equals in there but got in a hurry.

This is just another thing to confuse me.

Brandon

[Dan Grossman]

It's just a more compact way to write an if/else statement. It's convenient sometimes.

[AfroNinja]

Does ternary actually compute faster than an (optimally written) if/else? If anything it seems the ternary operator is used to make code more compact and fancier looking : )

[stereofrog]

Ternary is slower.