How to increment numeric part of a string by one?

Question

I have a string formed up by numbers and sometimes by letters.

Example AF-1234 or 345ww.

I have to get the numeric part and incre

Answer 1

If the string ends with numeric characters it is this simple...

$str = 'AF-1234';
echo $str++; //AF-1235

That works the same way with '345ww' though the result may not be what you expect.

$str = '345ww';
echo $str++; //345wx

@tampe125

This example is probably the best method for your needs if incrementing string that end with numbers.

$str = 'XXX-342';
echo $str++; //XXX-343