} elseif ( preg_match( '/^\s*DROP INDEX/i', $s ) ) {
// DROP INDEX is database-wide, not table-specific, so no ON <table> clause.
$s = preg_replace( '/\sON\s+[^\s]*/i', '', $s );
} elseif ( preg_match( '/^\s*DROP INDEX/i', $s ) ) {
// DROP INDEX is database-wide, not table-specific, so no ON <table> clause.
$s = preg_replace( '/\sON\s+[^\s]*/i', '', $s );