$Web Parm Len: Difference between revisions
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$Web_Len first looks for isindex fields matching the name, then for matching form fields. $Web_Len can be used instead of $Web_IsIndex_Len and $Web_Form_Len to make it easy to switch between using "method=GET" and "method=POST"<form> tags and simply to save typing. | $Web_Len first looks for isindex fields matching the name, then for matching form fields. $Web_Len can be used instead of $Web_IsIndex_Len and <var>$Web_Form_Len</var> to make it easy to switch between using "method=GET" and "method=POST"<form> tags and simply to save typing. | ||
See also: | See also: | ||
Revision as of 21:27, 6 June 2012
<section begin="desc" />Length of isindex or form field<section end="desc" />
$Web_Len retrieves the length of an isindex or form field in a request. $Web_Parm_Len is a somewhat more syntactically correct synonym for $Web_Len.
Syntax
<section begin="syntax" /> %RC = $WEB_[PARM_]LEN( fieldname, occurrence ) <section end="syntax" />
$Web_Len takes two arguments and returns a number, or zero if the field does not exist.
| fieldname | The name of the isindex or form field, returned by $Web_Name. Required argument if occurrence not specified, otherwise optional. |
|---|---|
| occurrence | The occurrence number of an isindex or form field, or the occurrence number of the isindex or form field matching 'fieldname', if fieldname is specified. Optional argument if fieldname is specified, otherwise it is required. |
$Web_Len first looks for isindex fields matching the name, then for matching form fields. $Web_Len can be used instead of $Web_IsIndex_Len and $Web_Form_Len to make it easy to switch between using "method=GET" and "method=POST"<form> tags and simply to save typing.
See also: