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

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).



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