how to use MergeField with argument that's function

hi  everry body.

this's first time i user TinyButSrong i'm having problem like this

$TBS->MergeField('mergefield','mergeField',true);


function mergeField($id){
    $sql = 'select * from example where id = '.$id;
    $result = mysql_query($sql) or die(mysql_error());
    $result = mysql_fetch_array($result,MYSQL_ASSOC);
    return $result;
}

i don't know how to set $id argument for function mergeField($id). who can elp me ?

First,
maybe not best to name your user function the same name as the TBS function, but that's just me.

Second,
AFAIK, TBS->MergeField is intended to be used to merge a single value into a field (as opposed to a block).  Your code (select * from) implies that you are returning a row of data from the db. If so, then a normal TBS->MergeBlock might be a better choice.
Normally, use TBS->MergeBlock for one or more records from the db.

Unless I completely misunderstand what you're trying to do...

HTH,
TomH