ldap_compare
(PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8)
ldap_compare — Compare value of attribute found in entry specified with DN
說明
LDAP\Connection
$ldap,string
$dn,string
$attribute,string
$value,?array
$controls = null): bool|int
Compare value of attribute
with value of same attribute in an LDAP directory entry.
參數
-
ldap -
通過 ldap_connect() 返回的 LDAP\Connection 實例。
-
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.
返回值
Returns true if value matches otherwise returns
false. Returns -1 on error.
更新日誌
| 版本 | 說明 |
|---|---|
| 8.1.0 |
現在 ldap 參數接受 LDAP\Connection
實例，之前接受 資源(resource)。
|
| 8.0.0 |
controls is nullable now; previously, it defaulted to [].
|
| 7.3.0 |
Support for controls added
|
範例
The following example demonstrates how to check whether or not given password matches the one defined in DN specified entry.
示例 #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.";
}
?>
註釋
ldap_compare() can NOT be used to compare BINARY values!