[RESOLVED] How to extract number from string?

[scialom]

Hi,

I have this var:
$i="141job_id"

but it can also be:
$i="12due_date";

I need to extract the number form the expression.
How can I do that?

Thanks,
Assaf

[pete_bisby]

If the number is always at the beginning of the string, then simply convert the string to an integer:

$string = "141job_id";
$i = (int)$string;  // $i = 141;

Quite handy, really!!

[bradgrafelman]

If it's not always at the beginning, you could do a simple [man]preg_match/man like so:

$string = "something1823else";
preg_match('/\d+/', $string, $number);
$number = $number[0];

Note that this only works for positive integers.

[scialom]

Thanks guys 🙂