(PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8)
ldap_compare — Compare value of attribute found in entry specified with DN
$ldap
,$dn
,$attribute
,$value
,$controls
= null
Compare value
of attribute
with value of same attribute in an LDAP directory entry.
ldap
An LDAP\Connection instance, returned by ldap_connect().
dn
The distinguished name of an LDAP entity.
attribute
The attribute name.
value
The compared value.
controls
Array of LDAP Controls to send with the request.
Version | Description |
---|---|
8.1.0 |
The ldap parameter expects an LDAP\Connection
instance now; previously, a valid ldap link resource was expected.
|
8.0.0 |
controls is nullable now; previously, it defaulted to [] .
|
7.3.0 |
Support for controls added
|
The following example demonstrates how to check whether or not given password matches the one defined in DN specified entry.
Example #1 Complete example of password check
<?php$ds=ldap_connect("localhost"); // assuming the LDAP server is on this hostif ($ds) { // bind if (ldap_bind($ds)) { // prepare data $dn = "cn=Matti Meikku, ou=My Unit, o=My Company, c=FI"; $value = "secretpassword"; $attr = "password"; // compare value $r=ldap_compare($ds, $dn, $attr, $value); if ($r === -1) { echo "Error: " . ldap_error($ds); } elseif ($r === true) { echo "Password correct."; } elseif ($r === false) { echo "Wrong guess! Password incorrect."; } } else { echo "Unable to bind to LDAP server."; } ldap_close($ds);} else { echo "Unable to connect to LDAP server.";}?>
ldap_compare() can NOT be used to compare BINARY values!