php man page for let

let(1)                                                             User Commands                                                            let(1)

NAME
       let - shell built-in function to evaluate one or more arithmetic expressions

SYNOPSIS
   ksh
       let arg...

DESCRIPTION
   ksh
       Each arg is a separate "arithmetic expression" to be evaluated.

EXIT STATUS
       The following exit values are returned:

       0        The value of the last expression is non-zero.

       1        The value of the last expression is zero.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO
       ksh(1), set(1), typeset(1), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                             let(1)