Question

I know this question have been asked endless times but I can’t find a working solution for my case.

I want to split a string in PHP (5.3) using semicolons as delimiters unless they are between $BODY$ strings. The goal is to split SQL statements where statements can be procedures (postgresql in this case).

Example:

select; start $BODY$ begin; end; $BODY$ lang; update

Should result in:

select
start $BODY$ begin; end; $BODY$ lang
update

I have been toying with preg_split for a while and cannot find a working solution.

Many thanks

Edit: it must works with multiline inputs (but I can remove line breaks using str_replace before hand)

Answer 1

As no regexps seemed to fit, here is how I did it for the one who are interested:

$length = strlen($sql);
$queries = array();
$offset = 0;
$last = 0;
do {
    if (($colon = strpos(substr($sql, $offset), ';')) === false) {
        break;
    }
    $colon += $offset;

    if (($body = strpos(substr($sql, $offset), '$BODY$')) !== false) {
        $body += $offset;
        if ($body < $colon) {
            $offset = $body + strpos(substr($sql, $body + 6), '$BODY$') + 12;
            continue;
        }
    }

    $queries[] = trim(substr($sql, $last, $colon - $last));
    $last = $offset = $colon + 1;

} while($offset <= $length);