$Web Form Parm Len: Difference between revisions
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==Syntax== | ==Syntax== | ||
<p class="syntax">%rc = $Web_Form_[Parm_]Len( fieldname, occurrence ) | <p class="syntax"><span class="term">%rc</span> = $Web_Form_[Parm_]Len( fieldname, occurrence ) | ||
</p> | </p> | ||
Revision as of 15:11, 12 April 2013
Length of form field
$Web_Form_Len retrieves the length of a field in a form. $Web_Form_Parm_Len is a somewhat more syntactically correct synonym for $Web_Form_Len.
$Web_Form_Len takes two arguments and returns a number, or zero if the field does not exist.
Syntax
%rc = $Web_Form_[Parm_]Len( fieldname, occurrence )
Syntax terms
| %rc | A numeric variable to contain a return code. |
|---|---|
| fieldname | The name of the form field, returned by $Web_Form_Name. Required argument if occurrence not specified, otherwise optional. |
| occurrence | The occurrence number of a form field, or the occurrence number of the form field matching fieldname, if fieldname is specified. Optional argument if fieldname is specified, otherwise it is required. |