PHP. Руководство по PHP. 2005

ldap_compare

Пред.

След.

ldap_compare

(PHP 4 >= 4.0.2, PHP 5)ldap_compare -- Compare value of attribute found in entry specified with DN

Description

mixed ldap_compare (resource link_identifier, string dn, string attribute, string value)

Returns TRUE if value matches otherwise returns FALSE. Returns -1 on error.

ldap_compare() is used to compare value

of attribute to value of same attribute in LDAP directory

entry specified with dn.

The following example demonstrates how to check whether or not given password matches

the one defined in DN specified entry.

Пример 1. Complete example of password check


<?php

$ds=ldap_connect("localhost"); // assuming the LDAP server is on this host

if ($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.";
}
?>

Внимание

ldap_compare() can NOT be used to compare BINARY values!

Замечание:

This function was added in 4.0.2.

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