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(PHP 5, PHP 7 < 7.4.0)

ibase_connectAbre uma conexão com um banco de dados


    string $database = ?,
    string $username = ?,
    string $password = ?,
    string $charset = ?,
    int $buffers = ?,
    int $dialect = ?,
    string $role = ?,
    int $sync = ?
): resource

Estabelece uma conexão com um banco de dados Firebird/InterBase.

No caso de uma segunda chamada a ibase_connect() com os mesmos argumntos, não será criada uma nova conexão, mas ao invés, será retornado o identificador da conexão já aberta. A conexão com o servidor será fechada assim que terminar a execução do script, a menos que seja fechada explicitamente pela chamada de ibase_close().



O argumento database deve ser um caminho válido para o arquivo do banco de dados no servidor no qual ele reside. Se o servidor não for local, ele deve ser prefixado com 'hostname:' (TCP/IP), 'hostname/port:' (TCP/IP com servidor interbase em porta TCP customizada), '//hostname/' (NetBEUI), dependendo do protocolo de conexão usado.


O nome de usuário. Pode ser definido com a diretiva ibase.default_user do php.ini


A senha para username. Poe ser definida com a diretiva ibase.default_password do php.ini.


charset é o conjunto de caracteres padrão para o banco de dados.


buffers é o número de buffers do banco de dados a serem alocados para o cache do lado do servidor. Se 0 ou omitido, o servidor escolhe o seu próprio padrão.


dialect define o dialeto SQL padrão para qualquer comand executado na conexão, e o padrão é o mais alto suportado pelas bibliotecas do cliente.


Funcional apenas com InterBase 5 e superior.


Valor Retornado

Retorna um identificador de conexão Firebird/InterBase em caso de sucesso, ou false em caso de erro.


Se você ter um erro parecido com "arithmetic exception, numeric overflow, or string truncation. Cannot transliterate character between character sets" (isto ocorre quando você tenta usar algum caractere com acento) ao usar esta função e depois de ibase_query() deve-se definir o conjunto de caracteres (isto é, ISO8859_1 ou o conjunto de caracteres atual).


Exemplo #1 Exemplo de ibase_connect()

= 'localhost:/path/to/your.gdb';

$dbh = ibase_connect($host, $username, $password);
$stmt = 'SELECT * FROM tblname';
$sth = ibase_query($dbh, $stmt);
while (
$row = ibase_fetch_object($sth)) {
$row->email, "\n";

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User Contributed Notes 7 notes

simon at thorndancer dot com
21 years ago
I found it difficult to get anything working using the current documentation.
While logic would suggest that the format in the docs should work (being based on all the
syntax of other standard database access functions) I had problem after problem. Finally I
found some comments on a newgroup that helped, and this is the result.

This is actual production code (not a mere example). It works.
Don't ask me why it is so different from the official docs.

if ( ibase_connect( $db_filespec,$db_user,$db_pass_word) )
$query = "SELECT, c.title, c.description ";
$query .= "FROM collections c ";
$query .= "WHERE ( = $page_id) ";

$result = ibase_query( $query );

$row_array = ibase_fetch_row($result);

$row_fetched = !empty($row_array);

if ($row_fetched)
// Extract the row into variables

$collection_id = $row_array[0];
$edit_title = $row_array[1];
$edit_desc = $row_array[2];

// Standardise the record contents

$collection_id = $collection_id + 0; // force type to numeric

// Wrap up the database side of things

ibase_commit(); // note parenthesis but no parameters.

ibase_close; // note total lack of parenthesis and parameters !

You'll notice that there is no reference to a database handle in this code.
It seems to be implicit when dealing with interbase functions. Certainly, I couldn't
get the code to work when using it explicitly. This makes the documentation
very hard to work with, and any reference to a handle needs to be ignored.

Important: ibase_close doesn't work for me if I put parenthesis after it.
ibase_close; // works
ibase_close(); // fails
ibase_close($db); // fails

Note: the line "if ($row_fetched)" could be replaced with "while ($row_fetched)"
if you need to process more than one record.

All that said, Interbase is a fantastic database to work with and IMHO a much
better choice than something like PostgreSQL if you need to move up from MySQL
to something more industrial strength. Just be sure to RTFM.
anthony at trams dot com
23 years ago
If you get a message like: 'Dynamic SQL Error SQL error code = -901 feature is not supported', this may be caused by InterBASE client 6.01 accessing a server running 5.x.

Make sure the dialect value is set to '1', like the following:

ibase_connect ('localhost:/usr/db/db.gdb', 'SYSDBA', 'masterkey', 'ISO8859_1', '100', '1' ) ;

That last value is the dialect, but you need the two preceding also, do avoid errors.

fwrk at bk dot ru
9 years ago
If you want to connect to interbase server runned on custom port (not default port 3050), you can specify it in "database" parameter in this way: 'hostname/port:' (TCP/IP with custom port).
$dbh = ibase_connect('', $username, $password);
$dbh = ibase_connect('', $username, $password);
$dbh = ibase_connect('\\data\\mywinibase.fdb', $username, $password);
ag at dividi dot de
18 years ago
With php5 on Windows i couldnt connect to a firebird database with following error :

Warning: ibase_connect(): Unable to complete network request to host "localhost"
. Failed to locate host machine. Undefined service gds_db/tcp. in C:\\wamp\\php\\ibase.php on line 5

the connect command was "$dbh = ibase_connect ("localhost:path_to_file.fdb", $username, $password);"

The solution is to insert the line
gds_db 3050/tcp #firebird Database
into the windows services file %WINDIR%\\system32\\drivers\\etc\\services
Robert Silvia
19 years ago
Just to update Simon's note...

Things must have been fixed since Simon wrote that note.
With PHP5 the following example works flawlessly:

$strconnect = 'localhost:/opt/firebird/examples/employee.fdb';

if (!($db=ibase_connect($strconnect, 'sysdba', 'yourpass', 'ISO8859_1', 0, 1)))
die('Could not connect: ' . ibase_errmsg());

$cursor = ibase_query($sql);
$row_array = ibase_fetch_row($cursor);



Also you CAN get away with the following connection string:
ibase_connect('/opt/firebird/examples/employee.fdb', 'sysdba', 'yourpass')
fb dot bird at gmail dot com
16 years ago
Remember for different locations
of php.ini file:


Please do not confuse this
and know location _loaded_ *.ini-file!
sam at
19 years ago
If you get a sloooow work of ibase_connect on Win2003, try to update your FireBird to version 1.5 or above, and your InterBase to version 7.1. Or move back to Win2000 :)
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