PERL index Function

Syntax

Definition and Usage

Returns the position of the first occurrence of SUBSTR in STR, starting at the beginning (starting at zero), or from POSITION if specified.

Return Value

• -1 on failure otherwise Position of matching string (starting at zero for the first character).

Example

Try out following example:

#!/usr/bin/perl

$string = "That is test";

$index = index ($string, 'is');

print "Position of is in the string $index\n";

It produces following result

Position of is in the string 5