Method reverse()

Method reverse

string reverse(string s, int|void start, int|void end)
array reverse(array a, int|void start, int|void end)
int reverse(int i, int|void start, int|void end)
mixed reverse(object o, mixed ... options)

Description

Reverses a string, array or int.

Parameter s

String to reverse.

Parameter a

Array to reverse.

Parameter i

Integer to reverse.

Parameter o

Object to reverse.

Parameter start

Optional start index of the range to reverse. Default: 0 (zero).

Parameter end

Optional end index of the range to reverse. Default for strings: sizeof(s)-1. Default for arrays: sizeof(a)-1. Default for integers: Pike.get_runtime_info()->int_size - 1.

Parameter options

Optional arguments that are to be passed to lfun::_reverse().

This function reverses a string, char by char, an array, value by value or an int, bit by bit and returns the result. It's not destructive on the input value. For objects it simply calls lfun::_reverse() in the object, and returns the result.

Reversing strings can be particularly useful for parsing difficult syntaxes which require scanning backwards.

See also

sscanf()