Split two variables with the same string in starting of the variable name

Question

I have the following :

$variable = bl45789;

The value bl will be always included in my variable.

How can I get only 45789.

With explode maybe ?

Answer 1

$var = 'bl45789';
preg_match_all('!\d+!', $var, $result);
echo $result; // will display 45789

Answer 2

You can use substr

$variable = 'bl45789';
$output   =  substr($variable, 2);