help with "substr"

[Anon]

Would someone help me please?

Right now, I have a list of comma-delimited 10-digit numbers, like this for example:
1234567890,1111111111,6666666666,8484848484
and this function locates them perfectly in the context of my scripting:
$number = substr($number,0,10);

However, sometimes the numbers are NOT ALWAYS 10 digits long, yet they are still comma-delimited, like this for example:
1234567890,12345,6666666666,333,

What code can I use for this? I would think there would be something along the lines of, any number starting with location "0" and ending with a comma":
$number = substr($number,0,",")
but, of course, that doesn't work... because I'm just guessing at what the code would be.

Thank you!!

[Anon]

use the explode() function:

<?
$numbers = '1234567890,1111111111,6666666666,8484848484';
$numbers = explode (',', $numbers);

echo "
$numbers[0]<br>
$numbers[1]<br>
$numbers[2]
";
?>

this outputs:
1234567890
1111111111
6666666666
8484848484

this will work for numbers of any length (as long as thry are all comma separated).

[Anon]

Well... I wanted to "set" the numbers with the "isset" function. In other words, if my string of numbers is 111,22,33333,4444, I wanted them all to be, "set," (such that if checked with the isset function, the value would be one, as in:
print isset($111);
// prints 1

and... unfortunately, I don't see how to "set" your output. Unless I do something like:
<?
$numbers ='1234590,11111,666666,8';
$numbers = explode (',', $numbers);
$$numbers = 1;
?>

.... but I doubt that will work. I will try it now, though, and then if it doesn't work, I'll see if you answered this quandry.

thanks!

[Anon]

So, you want to create variables out of each set of numbers, right?

<?
$numbers ='1234590,11111,666666,8';
$numbers = explode (',', $numbers);
foreach ($numbers as $key => $value) {
unset ($numbers[$key]);
$numbers["number_$value"] = $value;
}
extract ($numbers);
?>

the "number_" is necessary because variables cannot start with a number.