A - function definition

SYNOPSIS

<A NAME=name [PUBLIC | EXPORT | PRIVATE] [param[=value|$var] ...]>
  ... statements ...
</A>

DESCRIPTION
An anchor (<A>) tag delimits Vortex script functions. The function name is given by the NAME attribute. Following the anchor tag are the function's statements, and a closing </A> tag ends the function.

Function names, like variable names, are composed solely of alphanumeric characters, underscores (_), periods or spaces (i.e. if the name is in quotes), optionally starting with a slash (/). There must be at least one letter or underscore, which must occur before any digits. A function name cannot be a reserved word, such as an HTML or Vortex tag, or the name of a previously-declared function (such as a builtin or user function). These are the reserved tag names in Vortex:

ADDTRAILING	DEFAULT	FMTINFO	PAGELINKS	SORT	TRACESQL
ARRAY	ELSE	GETVAR	PASS	SPLIT	TRAP
BREAK	ELSEIF	HASH	PUTMSG	SQL	UNIQ
CAL	ENTRYFUNC	HEADER	READLN	SQLCACHE	USER
CALDATE	EXEC	IF	READMAILMSG	STACK	USES
CALRULE	EXIT	LOCAL	READVARS	STAT	VARINFO
CAPTURE	EXITFUNC	LOOP	RETURN	STRFMT	VXCP
CASE	EXPORT	MAILINFO	REX	SUBMIT	WHILE
CONTINUE	FETCH	MAILUTIL	SB	SWITCH	WRITE
COOKIES	FMT	MM	SCHEDULE	TIMEOUT	XTREE
DB	FMTCP	NSLOOKUP	SETVAR	TIMPORT

Script function names are case-sensitive. A function name may start with a slash (/), so that end-tag like functions can be declared. Function declarations cannot be nested ala Pascal; any anchor tags inside a function are printed out like any other non-Vortex tag. However, unlike some languages, Vortex functions can be called before the point they are declared (i.e. no C-like prototypes are needed).

• Function Scope
• Function Parameters
• Pass-by-Value Arguments
• Pass-by-Reference Arguments
• Start Functions with Parameters