Description
bool
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.
範例 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.";
}
?
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警告 |
ldap_compare() can NOT
be used to compare BINARY values!
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注: This function was added in 4.0.2.