Form - Individual and ranges of numbers..

[Mad_T]

Hi

I have a simple form where I want users to enter either individual numbers and/or ranges of numbers, once the form is submitted how to I get the values and then break then down into unique numbers, and individual numbers are the ranges ?

eg:
123,234,700-710,800,810-820 is submitted

How do I get
123
234
700
701
702
...
710
800
810
811
...
820

So I can use these values to work with ? Also removing an duplication ?

Thanks

[johanafm]

[man]explode[/man]
[man]array_unique[/man]

[Mad_T]

Thanks
I've just found a function that looks like it will work.
Seems a lot of code though !

<?php

define('RANGE_ARRAY_SORT', 1);
define('RANGE_ARRAY', 2);
define('RANGE_STRING_SORT', 3);
define('RANGE_STRING', 4);

function range_string($range_str, $output_type = RANGE_ARRAY_SORT)
{
    // Remove spaces and nother non-essential characters
    $find[]    = "/[^\d,\-]/";
    $replace[] = "";

// Remove duplicate hyphens
$find[]    = "/\-+/";
$replace[] = "-";

// Remove duplicate commas
$find[]    = "/\,+/";
$replace[] = ",";

$range_str = preg_replace($find, $replace, $range_str);

// Remove any commas or hypens from the end of the string
$range_str = trim($range_str,",-");

$range_out = array();
$ranges    = explode(",", $range_str);

foreach($ranges as $range)
{

    if(is_numeric($range) || strlen($range) == 1)
    {
        // Just a number; add it to the list.
        $range_out[] = (int) $range;
    }
    else if(is_string($range))
    {

        // Is probably a range of values.
       $range_exp = preg_split("/(\D)/",$range,-1,PREG_SPLIT_DELIM_CAPTURE);

        $start = $range_exp[0];
        $end   = $range_exp[2];

        if($start > $end)
        {
            for($i = $start; $i >= $end; $i -= 1)
            {
                $range_out[] = (int) $i;
            }
        }
        else
        {
            for($i = $start; $i <= $end; $i += 1)
            {
                $range_out[] = (int) $i;
            }
        }

    }
}

switch ($output_type) {
    case RANGE_ARRAY_SORT:
        $range_out = array_unique($range_out);
        sort($range_out);

    case RANGE_ARRAY:
        return $range_out;
        break;

    case RANGE_STRING_SORT:
        $range_out = array_unique($range_out);
        sort($range_out);

    case RANGE_STRING:

    default:
        return implode(", ", $range_out);
        break;
}
}

// Sample Usage:
$range = range_string("123,456,200-210,456");
print_r($range);
?>

[johanafm]

Seems like a lot of code indeed!

Why not stick to explode and array_unique?

$s = '123,234,700-710,800,810-820';
$tmp = explode(',', $s);
$nums = array();
foreach ($tmp as $el)
{
	$a = explode('-', $el);
	if (count($a) == 1)
	{

	$nums[] = $a[0];
}
else
{
	for ($i = $a[0]; $i <= $a[1]; ++$i)
	{
		$nums[] = $i;
	}
}
}
$nums = array_unique($nums);

Or did I missunderstand what you wanted?

[Derokorian]

function numberString($str) {
   $r = array();
   if( strpos($str,',') !== FALSE ) {
      $nums = explode(',',$str);
      foreach( $nums as $num ) {
         if( strpos($num,'-') !== FALSE ) {
            $range = explode('-',$num);
            for( $i=$range[0]; $i<=$range[1]; $i++ ) {
               $r[] = $i;
            }
         } else {
            $r[] = $num;
         }
      }
   } else {
      if( strpos($str,'-') !== FALSE ) {
         $range = explode('-',$num);
         for( $i=$range[0]; $i<=$range[1]; $i++ ) {
            $r[] = $i;
         }
      } else {
         $r[] = $str;
      }
   }
   return array_unique($r);
}

var_dump(numberString('123,234,700-710,800,810-820'));

Edit: shoulda refreshed!

[bradgrafelman]

Don't forget to throw [man]range/man in there too:

foreach ($tmp as $el) 
{ 
    $a = explode('-', $el); 
    if (count($a) == 1) 
    { 
        $nums[] = $a[0]; 
    } 
    else 
    { 
        array_push($nums, range($a[0], $a[1]);
    } 
} 

[Mad_T]

Thanks.
I'll try these and see which works best for me.