$Web Get Cookie Lstr: Difference between revisions

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Revision as of 22:17, 18 October 2012

<section begin="desc" />Value of cookie to longstring<section end="desc" />

$Web_Get_Cookie retrieves the value of a cookie as a longstring.

$Web_Get_Cookie_Lstr takes two arguments and returns a longstring or null for any error condition.

Syntax

<section begin="syntax" />%string = $Web_Get_Cookie_Lstr( name, occurrence ) <section end="syntax" />

Syntax terms

name The name of the cookie, returned by $Web_Cookie_Name. Required argument if occurrence is not specified, otherwise optional.
occurrence The occurrence number of a cookie, or the occurrence number of the cookie matching name, if name is specified. Optional argument if name is specified, otherwise it is required.

Usage notes

  • $Web_Get_Cookie_Lstr returns the value of a cookie sent by the browser and is not affected by $Web_Set_Cookie or $Web_Set_Cookie_Lstr calls before the $Web_Get_Cookie_Lstr call. For example, if a browser sent a cookie called "FOO" with a value of "PUB", in the following code

    %RC = $Web_Set_Cookie( 'FOO', 'BAR') %FOO = $Web_Get_Cookie_Lstr( 'FOO' )

    %FOO would be set to "PUB".

  • $Web_Get_Cookie_Lstr works pretty much like $Web_Get_Cookie or $Web_Cookie_Parm except
    • It can return more than 255 bytes of data into a longstring.
    • It causes request cancellation if the result would be truncated on assignment to the target STRING %variable or as input to a STRING $function argument or subroutine parameter.
    • It does not have position and length arguments (arguments 3 and 4).

Examples

This example places the value of each cookie into a User Language LONGSTRING variable of the same name.

%DESC = $Web_Get_Cookie_Lstr( 'DESC' ) %INFO = $Web_Get_Cookie_Lstr( 'INFO' )

See also