Question

i have this code:

<?php var_dump(strpos($url, "cashgold.")+9) ?>

<?php var_dump(strpos($url, '/', 8)) ?>

<?php $resta = strpos($url, '/', 8) - strpos($url, "cashgold.")+9 ?>

<?php var_dump($resta) ?>

this prints:

20
22
20

I expected it prints :

20
22
2

Answer 1

I think you’re having issues with maths – specifically with operator precedence.

When you’re doing

<?php $resta = strpos($url, '/', 8) - strpos($url, "cashgold.")+9 ?>

you’re doing (22 – 11) + 9. This is because + and – are the same precedence, so it’s being evaluated left to right.

Try (note the brackets)

<?php $resta = strpos($url, '/', 8) - (strpos($url, "cashgold.")+9) ?>

to do the calculation you’re after.