How to change Div class based on number range - php

Question

I am using ACF and dont know how to manage to replace div class name if the custom_field number is
equal and less then 30 class="color1"
equal and less then 50 class="color2"
equal and less then 90 class="color3"
Can you please tell me how to do that?
if( $post_objects ):
foreach( $post_objects as $post_object):
echo the_field("casino_rating", $post_object->ID);
endforeach; endif;
Thanks
Atif

Answer 1

I'm assuming you want to get the casino rating and display a different class depending on what appears?
In this case you could use this code:
if( $post_objects ):
foreach( $post_objects as $post_object ):
$casino_rating = get_field("casino_rating", $post_object->ID);
// This part here will decide what class to get
if( $casino_rating < 30 ){
echo 'class="color1"';
} elseif( $casino_rating < 50 ){
echo 'class="color2"';
} elseif( $casino_rating < 90 ){
echo 'class="color3"';
}
endforeach;
endif;
You might want to be careful though and make sure this is only outputting class= if there's no other class attached to the element, otherwise there'll be HTML errors.

Answer 2

Slightly more compact version that should achieve the same thing
if( $post_objects ):
foreach( $post_objects as $post_object ):
$rating = get_field("casino_rating", $post_object->ID);
$color = ($rating >= 31) ? "color2" : "color1";
$color = ($rating >= 51 ) ? "color3" : $color;
echo 'class="'.$color.'"';
endforeach;
endif;
or if you are going to use this a lot make a function for it At the bottom of your page
function color($rating) {
$color = ($rating >= 31) ? "color2" : "color1";
$color = ($rating >= 51 ) ? "color3" : $color;
return $color;
}
Then you can do
if( $post_objects ):
foreach( $post_objects as $post_object ):
$rating = get_field("casino_rating", $post_object->ID);
echo 'class="'.color($rating).'"';
endforeach;
endif;