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

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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