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 (ie. 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:

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

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 (ie. no C-like prototypes are needed).

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