$Web Cookie Parm: Difference between revisions
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<li><var>$Web_Cookie_Parm</var> returns the value of a cookie '''sent by the browser''' and is not affected by <var>$Web_Set_Cookie</var> calls before the <var>$Web_Cookie_Parm</var> call. | <li><var>$Web_Cookie_Parm</var> returns the value of a cookie '''sent by the browser''' and is not affected by <var>$Web_Set_Cookie</var> calls before the <var>$Web_Cookie_Parm</var> call. | ||
For example, if a browser sent a cookie called | For example, if a browser sent a cookie called <code>FOO</code> with a value of <code>PUB</code>, in the following code, <code>%FOO</code> would be set to <code>PUB</code>: | ||
<p class="code">%rc = $Web_Set_Cookie( 'FOO', 'BAR') | <p class="code">%rc = $Web_Set_Cookie( 'FOO', 'BAR') | ||
%FOO = $Web_Cookie_Parm( 'FOO' ) | %FOO = $Web_Cookie_Parm( 'FOO' ) | ||
</p> | </p> | ||
</ul> | </ul> | ||
Revision as of 17:17, 16 April 2013
Value of cookie
$Web_Cookie_Parm takes four arguments and returns a string, or null for any error condition. $Web_Get_Cookie is a synonym for $Web_Cookie_Parm.
Syntax
%string = $Web_Cookie_Parm( name, occurrence, [start], [len] )
Syntax terms
| name | The name of the cookie, returned by $Web_Cookie_Name. A required argument if occurrence is not specified, otherwise it is optional. |
|---|---|
| occurrence | The occurrence number of a cookie, or the occurrence number of the cookie matching name, if name is specified. An optional argument if name is specified, otherwise it is required. |
| start | Starting position within the name. This is an optional argument that defaults to 1. |
| len | Length to return. This is an optional argument, provided in case a cookie exceeds 255 bytes. The length of a cookie can be determined with $Web_Cookie_Len. The default is the length of the cookie. |
Usage notes
- $Web_Cookie_Parm returns the value of a cookie sent by the browser and is not affected by $Web_Set_Cookie calls before the $Web_Cookie_Parm call.
For example, if a browser sent a cookie called
FOOwith a value ofPUB, in the following code,%FOOwould be set toPUB:%rc = $Web_Set_Cookie( 'FOO', 'BAR') %FOO = $Web_Cookie_Parm( 'FOO' )
Examples
This example places the value of each cookie into a User Language %variable of the same name.
%ARTIST = $Web_Cookie_Parm( 'ARTIST' ) %GENRE = $Web_Cookie_Parm( 'GENRE' )