replacing part of the string using php

Question

I have problem replacing part of the string.

$val='Today';

$string ='TodayRainy';

str_replace($val, '',$string);

length of $val varies.

Answer 1

str_replace() returns the new string. It does not change it in place. This means you have the assign the results to a variable:

$new_string = str_replace($val, '',$string);