pg_dump multi-row insert cleanup

pg_dump_filter.php

<?php
$current_table_insert = null;

while ($line = fgets(STDIN)) {
    if (strpos($line, 'SET ') === 0) {
        echo $line;
    } elseif (strpos($line, 'INSERT INTO') === 0) {
        preg_match('/^(INSERT INTO (\w+) \([^)]*\) VALUES )(.*);$/', $line, $matches);
        if ($current_table_insert !== null) {
            echo ($current_table_insert === $matches[1]) ? ',' : ';';
        }
        if ($current_table_insert !== $matches[1]) {
            echo "\n\n{$matches[1]}";
        }
        echo "\n\t{$matches[3]}";
        $current_table_insert = $matches[1];
    }
}