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

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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