NAME
extract - extract a subpart of a string

SYNOPSIS
string extract(string str, void|int start, void|int to)

DESCRIPTION
Get a subpart of a string. Both 'start' and 'to' is a position in 'str'. If the position(s) is negative then it is counted from the end of the string. If the 'start' is bigger than 'to' then an empty string is returned. An empty string is also returned if the subpart is outside the string in its entirety. Both positions is optional. If no position is given then 'str' is returned. If only 'start' is given then a string from 'start' to the end of 'str' is returned.

SEE ALSO
capitalize, lower_case, explode, implode