How to produce a $mysql_query_sentence?

I have worked to have a very generic code so that I could modify it to be
used with any database.
My query-sentence I now looks like this:

$mysql_query_sentence=
$sql_work[$sql_work_sql][$sql_taeller].$sql_data[$sql_num][$sql_taeller++]
.$sql_work[$sql_work_sql][$sql_taeller].$sql_data[$sql_num][$sql_taeller++]
.$sql_work[$sql_work_sql][$sql_taeller].$sql_data[$sql_num][$sql_taeller++]
.$sql_work[$sql_work_sql][$sql_taeller].$sql_data[$sql_num][$sql_taeller++]
;

How could I write some code to have this produced automatically?

Try some loops (eg. "foreach", "for", "while").
Egzample with "for":

<?php

$mysql_query_sentence = '';
foreach( $sql_taeller = 0; $sql_taeller < count( $sql_data[$sql_num] ); $sql
_taeller++ )
{
$mysql_query_sentence .= $sql_work[$sql_work_sql][$sql_taeller].$sql_data[$s
ql_num][$sql_taeller];
}

?>

Hilarion

PS.: Wouldn't it be easier to store SQL queries for each DB as whole? Your m
ethod makes
the code really hard to read.