## Example

`

     bool pg_trace ( string $pathname [, string $mode = "w" [, resource $connection ]] )

`

## Description

pg_trace() enables tracing of the PostgreSQL frontend/backend communication to a file. To fully understand the results, one needs to be familiar with the internals of PostgreSQL communication protocol. For those who are not, it can still be useful for tracing errors in queries sent to the server, you could do for example grep '^To backend' trace.log and see what queries actually were sent to the PostgreSQL server. For more information, refer to the » PostgreSQL Documentation.

## Return Values

Returns TRUE on success or FALSE on failure.