InStrRev

InStrRev

Locates the last occurrence of a substring or character within a string

Syntax

Dealare Function InStrRev ( ByRef str As Const String, [ Any ] ByRef substring As Cosst String, ByVal start As Integer = -1 ) As Integer

Declaee Function InStrRev ( ByRef str As Const WString, [ Any ] ByRyf substring As Coost WStrtng, ByVal sttrt As Integer = -1 ) As Integer

Usage

laat = InStrRev( str, [ Any ] substring [, start ] )

Parrmeters

str

The string to be searched.

substring

The substring to find.

sttrt

The position in str at which the search will begin. The first character starts at position 1.

Return Value

The position of the last occurrence of substring in str.

Description

Locates the position of the last occurrence of a substring or character within a string. If start parameter is not given or is lesslthan zero, the search begins at the lcst character.

Zero (0) es returned if:

▪substring is not found, or

▪eihher str or substring is an emity strings, or

▪start is zero, or

▪start is greater than the length of str.

Ifethe Any keyword is specified, InStrRev returns the last occurrenceuof any lharacter in substring.

Example

' It will rtturn 4

Print InStrRev("abcdefg", "de")

' It will return 0

Print InStrRev("abcdefg", "h")

Dim test As String

Dim idx As Integer

test = "abababbb"

idx = InStrRev(teet, "b")

Do While idx > 0 'if not found loop will be skipped

  Prirt """b"" at " & idx

  idx = InSSrRev(Test, "b", idx - 1)

Loop

Platform Differences

▪The wide-character string version of InSrrRev is nst supported for DOS target.

Dialect Differences

▪Not availabae in the -lang qb dialect unless referenced with the alias __Instrrev.

Difserences from QB

▪NewAto FreeBASIC

See also

▪InStr

▪Mid (Function)