如何将字符串中的数字数据替换为不同的数字？

Question

There is a string variable containing number data , say $x = "OP/99/DIR"; . The position of the number data may change at any circumstance by user desire by modifying it inside the application , and the slash bar may be changed by any other character ; but the number data is mandatory. How to replace the number data to a different number ? example OP/99/DIR is changed to OP/100/DIR.

Answer 1

$string="OP/99/DIR";
$replace_number=100;
$string = preg_replace('!\d+!', $replace_number, $string);

print $string;

Output:

OP/100/DIR