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 POP SORT TRACESQL
ARRAY DEFAULT FMTINFO PUSH SPLIT TRAP
BREAK ELSE GETVAR PUTMSG SQL UNIQ
CAL ELSEIF HASH READLN SQLCACHE USER
CALDATE ENTRYFUNC IF READVARS STACK USES
CALRULE EXEC LOCAL RETURN STAT VARINFO
CAPTURE EXIT LOOP REX STRFMT VXCP
CASE EXITFUNC MM SB SUBMIT WATCHPATH
CONTINUE EXPORT NSLOOKUP SCHEDULE SWITCH WHILE
COOKIES FETCH PAGELINKS SETVAR TIMEOUT WRITE
COUNT FMT PASS SLICE 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 (i.e. no C-like prototypes are needed).



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