And you're sure there isn't any firewall in between which might not allow the connection?

There's no firewall. Actually, the script is connecting to the database. It retrieves the results correctly. But he gives me that error.

Thank's for replying.

Does something simple like this work:

<?php echo "Hello world!"; ?>

I did. And returned the normal result:

Hello world!

Please try using this snapshot:

  http://snaps.php.net/php5.3-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/

Ok. I've updated my PHP to this version and the error keeps the same. I don't know what else to do!

Bug  #49955 http://bugs.php.net/bug.php?id=49955 can be closed , i
have tested with php 5.3 latest snapshot
and firebird is on a remote host
in fact i have tested with two remote hosts one with firebird 2.1 and
one with firebird 2.5
I guess 10000000 connections are enough to see if it's all ok
I got no error , it never reaches to die zone


cat 49955.php
<?
$user='SYSDBA';
$password='masterkey';
$database="192.168.0.1:/var/lib/firebird/2.5/data/employee.fdb";
for ($i = 1; $i <= 10000000; $i++) {
   echo $i;

$conFb = @ibase_pconnect($database, $user, $password)
        or die("Error when trying to connect!");
}
?>


also tested from apache the scripts dies only when it reaches max
execution time , as expected for default php is 30 seconds
lynx http://localhost/49955.php

php versions tested: 5.3.3 snapshot (cli) (built: Jan 11 2010 
13:19:54)

and 5.3.1 rc2 (cli) (built: Nov  2 2009 17:22:21) + apache module

also tested with 
PHP 5.2.12 (cli)

I have started windows xp in virtualbox and found why it doesn't work 
on windows 

dowloaded the php 5.2.12 http://www.php.net/get/php-5.2.12-
Win32.zip/from/a/mirror
unzip it in c:\php
enable interbase dll extension in php.ini and allow persistent 
connection 

installed firebird 2.1.3 stable from 
http://www.firebirdsql.org/index.php?op=files&id=engine_213

allow the installer to create the lagacy gds32 and firebird client dll 
in system folder 

Delete the old gds32 (interbase 6.0.x dll) from php folder
it's very old and unsupported, this is why it doesn't work on windows 
(persistent connection)

http://picasaweb.google.com/lh/photo/C_I1CJYsyZXrGLtNjDxVTg?
authkey=Gv1sRgCIeMif_wgf2N3wE&feat=directlink

Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

seems to be a network issue with that host