Script that takes array of numbers (yrs,pgs,etc)& returns: 2000-2004, 2006, 2008-2010

Hi All:

I'm looking for a script that would take an array of numbers and combine consecutive numbers and list non-consecutive numbers, sort of how the Print option in microsoft word works.

I.e.

I have an array that has the following numbers (1,2,3,5,6,7,9,12,13,14,19,22,23) - I am looking for a function that would return:

1-7,9,12-14,19, 22-23

Thanks,

Mat

 

This is a little ugly, but it should work.

$values = array(1,2,3,5,6,7,9,12,13,14,19,22,23);

$output = '';


for($i=0;$i<count($values);$i++) {
    
    if(!$start) {
        $start = $values[$i];
    }
    
    if($values[$i+1] != $values[$i] + 1) {

        $end = $values[$i];
        
        if($start != $end) {
            $output .= $start.'-'.$end;
        } else {
            $output .= $end;
        }
        
        if($i != count($values)-1) {
            $output .= ',';
        }
        
        unset($start);
    }
}

//echo $output;
//Output's 1-3,5-7,9,12-14,19,22-23

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