Substr() - IVR String Handling Function | Xtend IVR Tutorial

$strExtract = Substr ( <string>, <start index>, [len] )

Extracts a substring from <string>.

Parameters

<string> Main string parameter.

<start index> Start position.

[len] Number of characters to be extracted.

Return Value

Returns the extracted substring.

Remarks

Extracts a substring of length [len] characters from the string <string>, counting from the position <start index> which is a zero-based index. The function returns a copy of the extracted substring.

Example

$a = "ABCD" 
$b = Substr($a,1,2)

     $b now contains "BC".

$a = "ABCDEFG" 
$b = Substr($a,3)

     $b now contains "DEFG".

$a = "ABCDEFGH" 
$b = Substr($a,3)

     $b now contains "DEFGH".