PHP "if" statement looking for between two numbers

Question

I need help on a if statement here is what is going on.

I have a value being pulled $paint['product_id']

I need to say if that value is between 81501 - 81599 or 81701 - 81799 say blah

else if that value is between 81001 - 81099 or 81301 - 81399 say blah2

else if 86501 - 86599 or 86001 - 86099 or 85001 - 85099 say blah3

and say nothing if it does not apply.

What id did try

<? if ($paint['product_id'] >= 81501 && $x <= 81599 || $paint['product_id'] >= 81701 && $x <= 81799):?>
blah
<? elseif ($paint['product_id'] >= 81001 && $x <= 81099 || $paint['product_id'] >= 81301 && $x <= 81399):?>
blah2
<? elseif ($paint['product_id'] >= 86501 && $x <= 86599 || $paint['product_id'] >= 86001 && $x <= 86099 || $paint['product_id'] >= 85001 && $x <= 85099):?>
blah3
<? endif;?>

The problem I am having is "blah" is showing up on items in the blah3 category.

Hope that makes sense and thanks in advance for any help!

Answer 1

Replace $x with $paint['product_id'].

Answer 2

You should group them with brackets:

if( ($x > 10 && $x < 20) || ($x > 40 && $x < 50) ) { ...