need help with math on php

[pixeltrace]

hi,

 

i need help. i currently have a code that assigns a value for $zoom depending on the value of $dist1

but its very long and i was thinking of just converting it to math that will add increments on the

value of zoom with respect to the value of $dist1

my problem is, i dont know how to do it.

below is my current code

if ($dist1>=0)
{
if ($dist1<=600)
{
	$zoom=4000;
}
}
if ($dist1>=600)
{
if ($dist1<=1000)
{
	$zoom=8500;
}
}
if ($dist1>=1000)
{
if ($dist1<=1600)
{
	$zoom=10000;
}
}
if ($dist1>=1600)
{
if ($dist1<=2000)
{
	$zoom=15000;
}
}
if ($dist1>=2000)
{
if ($dist1<=3500)
{
	$zoom=20000;
}
}
if ($dist1>=3500)
{
if ($dist1<=4550)
{
	$zoom=25000;
}
}
if ($dist1>=4550)
{
if ($dist1<=5500)
{
	$zoom=30000;
}
}
if ($dist1>=5500)
{
if ($dist1<=6600)
{
	$zoom=35000;
}
}
if ($dist1>=6600)
{
if ($dist1<=7600)
{
	$zoom=40000;
}
}
if ($dist1>=7600)
{
if ($dist1<=8600)
{
	$zoom=45000;
}
}
if ($dist1>=8600)
{
if ($dist1<=9600)
{
	$zoom=50000;
}
}
if ($dist1>=9600)
{
if ($dist1<=10600)
{
	$zoom=55000;
}
}
if ($dist1>=10600)
{
if ($dist1<=11600)
{
	$zoom=60000;
}
}
if ($dist1>=11600)
{
if ($dist1<=12600)
{
	$zoom=65000;
}
}
if ($dist1>=12600)
{
if ($dist1<=13600)
{
	$zoom=70000;
}
}
if ($dist1>=13600)
{
if ($dist1<=14600)
{
	$zoom=75000;
}
}
if ($dist1>=14600)
{
if ($dist1<=15600)
{
	$zoom=80000;
}
}
if ($dist1>=15600)
{
if ($dist1<=16600)
{
	$zoom=85000;
}
}
if ($dist1>=16600)
{
$zoom=100000;
}

 

 

hope you could help me with this.

 

thanks!

 

[MadTechie]

i can't see the logical increase..

how are you working out the zoom compared to the dist!

 

also

 

it would probably be easier to do

if ($dist1 >= 0 && $dist1<=600)
{
$zoom=4000;
}
if ($dist1 >= 601 && $dist1<=1000)
{
$zoom=8500;
}

 

quicker code being

if ($dist1 >= 0 && $dist1<=600)
{
$zoom=4000;
}else{
if ($dist1 >= 601 && $dist1<=1000)
{
	$zoom=8500;
}
}

[pixeltrace]

hi,

 

The increase on the zoom will be 85% of the dist value

let say

i have

dist = 1000

 

zoom value will be

zoom = 8500

 

how do i do this?

 

thanks!

[infid3l]

$zoom = $dist1*8.5

 

You're giving contradictory information, 85% of 1000 is 850

 

But I think this is what you mean.

[pixeltrace]

also the values for my dist is

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

 

how to compute the zoom by 85% where dist is equal to those values?

need help on this.

 

thanks!

[pixeltrace]

hi,

 

infid3l  thanks you are right about it.

 

sorry for the cofusion

 

[infid3l]

hi,

 

infid3l  thanks you are right about it.

 

sorry for the cofusion

 

 

However, your statements have no real formula to them. You might be able to do something like:

 

for($i=0;$i<=20*600;$i=$i+600){
if ($dist1>=$i)
{
	if ($dist1<=($i+600))
	{
		$zoom=($i+600)*4;
		break;
	}
}
}

 

It doesn't exactly fulfill your "formula" though.

[jitesh]

<?php

$zoom_array = array(4000,8500,10000,15000);

$range_array = array('0-600','601-1000','1001-1600','1601-2000');

$dist1 = 800;

echo "This is the zoom value ".getzoom($dist1,$zoom_array,$range_array);

function getzoom($dist1,$zoom_array,$range_array){

foreach($range_array as $key => $value){

$range = explode("-",$value);

if($dist1 >= $range[0] and $dist1 <= $range[1]){

return $zoom_array[$key];

}

}

return "Nothing Found";

}

?>

[pixeltrace]

thanks!

 

i will try this

[MadTechie]

I love that idea jitesh,

 

multidimensional array would be a little better but still love the idea:)

 

nice work..

[pixeltrace]

hi,

 

sorry i wasnt able to get back on this since the last reply. been busy on other projects

im confused on the array...

anyway,

how can i just simplify this code?

//computation for the scaling
if ($distance >= 0 && $distance<=1000)
{
$scale=$distance*21;
}
if ($distance >= 1001 && $distance<=2000)
{
$scale=$distance*20;
}
if ($distance >= 2001 && $distance<=3000)
{
$scale=$distance*19;
}
if ($distance >= 3001 && $distance<=4000)
{
$scale=$distance*18;
}
if ($distance >= 4001 && $distance<=5000)
{
$scale=$distance*18;
}
if ($distance >= 5001 && $distance<=6000)
{
$scale=$distance*16;
}
if ($distance >= 6001 && $distance<=7000)
{
$scale=$distance*16;
}
if ($distance >= 7001 && $distance<=8000)
{
$scale=$distance*16;
}
if ($distance >= 8001 && $distance<=9000)
{
$scale=$distance*16;
}
if ($distance >= 9001 && $distance<=10000)
{
$scale=$distance*16;
}

 

 

hope you could help me with this.

 

thanks!

[jitesh]

<?php
$distance = 1500;
$main_array = array("21-0-1000","20-1001-2000","19-2001-3000");

echo " Scal is ".getscale($main_array,$distance);

function getscale($main_array,$distance){

foreach($main_array as $index => $n_arr_range){
	$val_ar = array();
	$val_ar = explode("-",$n_arr_range);
	if($distance >= $val_ar[1]  and $distance <= $val_ar[2]){
		return $distance*$val_ar[0];
	}
}
return " Not Found ";

}

?>

[pixeltrace]

thanks!

 

by the way, how do i get the value for $scale?

since in my current code

$scale=$distance*(multiplier)

 

thanks again!

[pixeltrace]

this is what i did

//computation for the scaling
$main_array = array("21-0-1000","20-1001-2000","19-2001-3000","18-3001-4000","18-4001-5000","16-5001-6000","16-6001-7000","16-7001-8000","16-8001-9000","16-9000-10000");

//echo " Scal is ".getscale($main_array,$distance);

function getscale($main_array,$distance){

foreach($main_array as $index => $n_arr_range){
	$val_ar = array();
	$val_ar = explode("-",$n_arr_range);
	if($distance >= $val_ar[1]  and $distance <= $val_ar[2]){
		return $distance*$val_ar[0];
		$scale=$distance*$val_ar[0];
	}
}
}

 

and i am getting this error

Fatal error: Cannot redeclare getscale() (previously declared in /var/www/html/myoochi/findit/propertyfindit.php:876) in /var/www/html/myoochi/findit/propertyfindit.php on line 876

 

 

hope you could help me with this.

 

thanks!

[pixeltrace]

hi,

 

any response on this?

 

thanks!

 

[hitman6003]

The error you are getting, "Cannot redeclare...", means that a function with that name already exists in the location specified.

[jitesh]

//computation for the scaling

$main_array = array("21-0-1000","20-1001-2000","19-2001-3000","18-3001-4000","18-4001-5000","16-5001-6000","16-6001-7000","16-7001-8000","16-8001-9000","16-9000-10000");

 

//echo " Scal is ".getscale_change($main_array,$distance);

 

function getscale_change($main_array,$distance){

 

foreach($main_array as $index => $n_arr_range){

$val_ar = array();

$val_ar = explode("-",$n_arr_range);

if($distance >= $val_ar[1]  and $distance <= $val_ar[2]){

return $distance*$val_ar[0];

$scale=$distance*$val_ar[0];

}

}

}

 

[pixeltrace]

hi,

 

this is exactly the same code that i used

but i am getting that error.

 

how to fix it?

 

thanks!

[jitesh]

Tried it ?

 

 

check it again

[pyrodude]

EDIT: Whoops.  No clue. =)