user defined functions

Functions are defined using the function statement

[...] = optional ... = your value

function_name[ $first_var=...; $more_vars=... ; $last_var=...]
[...]
endfunction
[var $... = ]call function_name[ $first_var=...; $more_vars=... ; $last_var=...]

Functions can be defined in the current script
or in a .xt file stored locally or anywhere on the web.

Functions can also be called from html
The Function must be defined in a Xtscript on the same page
or included from elsewhere
<xt:call function="..." first_var="..." more_vars="..." last_var="..."/>
or like this
<xt:call function="..." args="$first_var=...;$more_vars=...;$last_var=..." />

Example code

Show as text

# A simple function
function my_function $var_1=1;$var_2=100;
 var $num = call mt_rand $min=$var_1;$max=$var_2;
 return $num
endfunction

#Call function with default arguments
print Direct 
call my_function
print 
#Call function with new arguments
call my_function $var_1=200;$var_2=300
print <hr />

# Include local .xt file containing a function
print Local 
include /manual/basics/examples/filename.xt
# Call included function 
call @my_other_function $var_1=500;$var_2=1000
print <hr />

# Include external .xt file containing a function
print External 
include your_site.xtgem.com/function.xt
# Call included function 
call your_site.xtgem.com@someones_function $var_1=2000;$var_2=3000

<hr />Html direct 
<xt:call function="my_function" var_1="5000" var_2="6000"/>
<hr />Html local 
<xt:call function="@my_other_function" var_1="6000" var_2="7000"/>
<hr />Html external 
<xt:call function="your_site.xtgem.com@someones_function" var_1="7000" var_2="8000"/>

Show as text

Example output

Reload
Direct
67
267

Local
867

External
2975

Html direct
5681

Html local
6779

Html external
7403

Related pages
includes return .xt files