ldap_connect
Connect to an LDAP server
Description
resource ldap_connect
([ string $host = NULL
[, int $port = 389
]] )
Note: This function does not open a connection.
It checks whether the given parameters are plausible and can be used
to open a connection as soon as one is needed.
Parameters
-
host
-
This field supports using a hostname or, with OpenLDAP 2.x.x and
later, a full LDAP URI of the form ldap://hostname:port
or ldaps://hostname:port for SSL encryption.
You can also provide multiple LDAP-URIs separated by a space as one string
Note that hostname:port is not a supported LDAP URI as the schema is missing.
-
port
-
The port to connect to. Not used when using LDAP URIs.
Return Values
Returns a positive LDAP link identifier when the provided hostname/port combination or LDAP URI
seems plausible. It's a syntactic check of the provided parameters but the server(s) will not
be contacted! If the syntactic check fails it returns FALSE.
When OpenLDAP 2.x.x is used, ldap_connect will always
return a resource as it does not actually connect but just
initializes the connecting parameters. The actual connect happens with
the next calls to ldap_* funcs, usually with
ldap_bind.
If no arguments are specified then the link identifier of the already
opened link will be returned.
Examples
Example #1 Example of connecting to LDAP server.
<?php
// LDAP variables
$ldaphost = "ldap.example.com"; // your ldap servers
$ldapport = 389; // your ldap server's port number
// Connecting to LDAP
$ldapconn = ldap_connect($ldaphost, $ldapport)
or die("Could not connect to $ldaphost");
?>
Example #2 Example of connecting securely to LDAP server.
<?php
// make sure your host is the correct one
// that you issued your secure certificate to
$ldaphost = "ldaps://ldap.example.com/";
// Connecting to LDAP
$ldapconn = ldap_connect($ldaphost)
or die("Could not connect to {$ldaphost}");
?>