4. When writing functions that deal with strings, be sure to remember
that PHP holds the length property of each string, and that it
- shouldn't be calculated with strlen(). Write your functions in a such
+ shouldn't be calculated with strlen(). Write your functions in such
a way so that they'll take advantage of the length property, both
for efficiency and in order for them to be binary-safe.
Functions that change strings and obtain their new lengths while