php percentage help

[jamesmorris86]

I have made a 'health bar' for a simple browser game i have been working on.

I want to use a background image to fill the health bar, so if for example, the player had full health, the health bar image width would be 100%

is it possible to say set, the characters max health and the characters actual health and work it out as a percentage so i can stretch the image width as far as it needs to go?


sorry if i haven't been too clear, my understanding of maths is not so good.

Thanks for any tips.

 

[hargi]

Don't really understand. But easiest thing to do is set max health to 100 units and then everything is in % ?

 

[jamesmorris86]

edit: so i this working now

$current_health=250;
$max_health=9999;
$health_percentage=$current_health/$max_health*100;

that works but returns the percentage with lots of decimals. is there a way to round the result up?


sorry,

in real terms i think it would be something like this.

'current health' divided by 'max health' times 100 = percentage

im just not sure how i would do that in php

 

[Frozennova]

$current_health=250;
 $max_health=9999;
 $health_percentage=round($current_health/$max_health*100,0) ;