Expansion of numbers in a string

[tomjermy]

Hi.

Can anyone give me some idea of how I would go about making

1,5,100-103 appear as an array of:

1
5
100
101
102
103

?

The figures would be posted with a form on $_SERVER['PHP_SELF'].

Thanks!
Tom J

[paulnaj]

Hi Tom,

Welcome to the forum!

There's probably many ways to skin this particular cat ...

<?php 
$number_string = '1,5,100-103';

$number_array = array();
foreach(explode(',', $number_string) as $temp){
	$check = explode('-', $temp);
	$num_check = count($check);
	if($num_check == 1){
		$number_array[] = $check[0];
	} else {
		$first = $check[0];
		$last = $check[1];
		for($i = $first; $i <= $last; $i++){
			$number_array[] = $i;
		}
	}
}
echo '<hr><b>number_array</b>: <pre>';	print_r($number_array);	echo '</pre>';
?>  

Paul 🙂

[Installer]

If you were posting them, e.g., like this:

<input type="text" name="number[]" />
<input type="text" name="number[]" />
// etc.

then they would already be in an array ($POST['number']). You could assign them to another variable:

$number_arr = $_POST['number'];

[tomjermy]

That's prefect!
Thanks.