Description:
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from the source code, the using time in this query about
7-10 ms (for exec pg_query) but when i using EXPLAIN ANALYZE in query, postgresql say it using 0.9 ms in query, so i think it very lost time in pg_query 5-8 ms. Because my web page have 4-10 query per page this consume time it make my server cannot service more than 20 page/sec (1/(5 query X 10 ms), if reduce this time it very speed up my php page

this problem not appear if query from one table , but when join table more than one table in query it happen.

in jsp&jdbc does not have any this problem

Reproduce code:
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function microtime_float()
{    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);}

$q = "select a.id, b.id, c.id, d.id, e.id
      from a,b,c,d,e
      where a.id=b.aid and b.id=c.bid 
            and c.id=d.cid and d.id=e.did";

$time_start = microtime_float();
pg_query ($q);
$time_end = microtime_float();
$time = $time_end - $time_start;