simple more than less than if statement (i think)

[c_shelswell]

Frying my brain a bit trying to figure this out. I'm sure it's very easy though.

 

I'm just trying to make a simple more than or less than statement but i'm sure there's a better way than the way i'm doing it:

 

$y = 3;

if ($y== 1||$y==2|| $y == 3 || $y == 4 || $y==5)
{
     do something
}

 

so i'm just trying to make the "if" go 2 either side of 3. Is there a better way than writing it in such a long way?

 

Thanks 

[per1os]

$y=4;

if ($y < 3 || $y > 3) {
      echo 'Y is not 3';
}

 

Something like that, or what exactly are you trying to do, because really the statement you wrote does not go with how you described it working.

[c_shelswell]

sorry should have said "2 either side of 3 and inclusive of 3"

 

Cheers

[taith]

<?
$y = 4;

if($y<>3){
echo 'i work';
}
?>

[per1os]

sorry should have said "2 either side of 3 and inclusive of 3"

 

Cheers

 

<?php
$y=3;
if (($y < 3 || $y>=3) && ($y>0 && $y<6)) {
    echo 'here we are';
}
?>

 

Not sure if that is any better than the original statement but should work.

[c_shelswell]

Yeah guess it's much the same - thanks very much for your help

[taith]

you can simplify that frost...

 

<?php
$y=3;
if($y<>3 && ($y>0 && $y<6)){
echo 'here we are';
}
?>

[per1os]

you can simplify that frost...

 

<?php
$y=3;
if($y<>3 && ($y>0 && $y<6)){
echo 'here we are';
}
?>

 

Doesn't the <> mean not equal to three ??? Or am I mistaken, if so he said he would like to include three in his reply...

[taith]

oh... sorry... i thought 3 was to be excluded... mybad...

[c_shelswell]

You can see why i was confused 

[per1os]

Just because I am bored, if you wanted this to be very versatile you could do something like this:

 

<?php
function within($num, $within=3, $within_what=2) {
       $upper = $within_what + $within;
       $lower = $within_what - $within;
       
       $x;
       for ($i=$within;$i<$upper;$i++) {
             if ($i == $num) {
                 return true;
            }elseif ($x == $num) {
                 return tre;
            }
       }
       
       return false;
}

$y = 4;
if (within($y)) {
     echo 'yep';
}

$y=7;
if (!within($y, 3, 2)) {
     echo 'nope';
}

$y=3;
if (within($y)) {
     echo 'yep';
}
?>

 

Just something fun to do if you are going to be using this quite a bit.

[c_shelswell]

great cheers i'll give that a go!!

[AV1611]

sorry should have said "2 either side of 3 and inclusive of 3"

 

Cheers

 

$y=3;

$ll=$y-2;

$ul=$ul-2;

if($y < $ll || $y > $ul) {

  echo 'T';}

else {

  echo 'F';}

[per1os]

<?php
function within($num, $within=3, $within_what=2) {
       $upper = $within_what + $within;
       $lower = $within_what - $within;

       if($num < $lower || $num > $upper) {
             return true;
       }else {
             return false;
       }
}

$y = 4;
if (within($y)) {
     echo 'yep';
}

$y=7;
if (!within($y, 3, 2)) {
     echo 'nope';
}

$y=3;
if (within($y)) {
     echo 'yep';
}
?>

 

Thanks to av1611 for providing that, made the function less processing intense. =) Updated the function without the for loop.