Name

substring — Extracts a substring

Synopsis

string substring ( string STRING ,
  integer OFFSET ,
  integer LENGTH );
 

Parameters

string STRING

integer OFFSET

integer LENGTH

Return

string

Description

Extracts a substring of the string STRING, starting at OFFSET after the first one with length of at most LENGTH. OFFSET starts with 0.

Usage

  substring ("some text", 5, 2) -> "te"
  substring ("some text", 42, 2) -> ""
  substring("123456789", 2, 3) -> "345"