$Web Form Parm Len: Difference between revisions
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<td>A numeric variable to contain a return code.</td></tr> | <td>A numeric variable to contain a return code.</td></tr> | ||
<tr><th>fieldname</th> | <tr><th>fieldname</th> | ||
<td>The name of the form field, returned by $Web_Form_Name. Required argument if occurrence not specified, otherwise optional.</td></tr> | <td>The name of the form field, returned by <var>[[$Web_Form_Name]]</var>. Required argument if <var class="term">occurrence</var> not specified, otherwise optional.</td></tr> | ||
<tr><th>occurrence</th> | <tr><th>occurrence</th> | ||
<td>The occurrence number of a form field, or the occurrence number of the form field matching | <td>The occurrence number of a form field, or the occurrence number of the form field matching <var class="term">fieldname</var>, if <var class="term">fieldname</var> is specified. Optional argument if <var class="term">fieldname</var> is specified, otherwise it is required. | ||
</td></tr></table> | </td></tr></table> | ||
Revision as of 21:48, 6 June 2012
<section begin="desc" />Length of form field<section end="desc" />
$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
<section begin="syntax" /> %rc = $Web_Form_[Parm_]Len( fieldname, occurrence ) <section end="syntax" />
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. |