PHP "if" statement looking for between two numbers - php

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) ) { ...

Answer 3

Consider creating a user defined function, e.g.
function between($x, $lim1, $lim2) {
if ($lim1 < $lim2) {
$lower = $lim1; $upper = $lim2;
}
else {
$lower = $lim2; $upper = $lim1;
}
return (($x >= $lower) && ($x <= $upper));
}
Then the rest of your code becomes much more legible:
if between($paint['product_id'], 81501, 81599) blah;
As given, the "between" function will work even if you don't know ahead of time whether the first or the second argument is larger.

Answer 4

You need more parenthesis
<?php
<? 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;?>

Answer 5

there are at least 3 ways to solve it.
First solution has been already posted by users
Second solution is to create between function and use it.
function between($number, $from, $to)
{
return $number>$from && $number<$to;
}
if(between($paint['product_id'], 81501, 81599) || $paint['product_id'], 81701, 81799))
echo 'blah';
else if(between($paint['product_id'], 81001, 81099) || $paint['product_id'], 81301, 81399))
echo 'blah2';
else if(between($paint['product_id'], 86501, 86599) || $paint['product_id'], 86001, 86099) || $paint['product_id'], 85001, 85099))
echo 'blah3';
else echo 'it does not apply';
Third solution is to use range() function and in_array() function
example if(in_array($paint['product_id'], range(81501, 81599)))
rest goes the same

Answer 6

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

Answer 7

Hellow i'm going to desribe how to use if condition between two numbers in PHP in easy steps.
<?php
$a= 65;
$b= 9;
if($a<$b)
{
echo "$a this is correct";
}
else{
echo "$b this is greater than $a";
}
?>