php and LDAP

[Louwtjie]

Hi,

Can somebody please help me with this code?

I want to connect to an ldap server (Exchange server) and read some user names, emails, etc.

I connect sucessfully but I can't read any entries.

this is the error i get.:

Warning: LDAP: Unable to perform the search: Operations error in /var/www/intradev/ldap2.php on line 17

And here are my code:

<?php
echo "<h3>LDAP query test</h3>";
echo "Connecting ...";
$ds=ldap_connect("myldapserver.myserver.com");
echo "connect result is ".$ds."<p>";

if ($ds) {
echo "Binding ...";
$r=ldap_bind($ds);
echo "Bind result is ".$r."<p>";

$query = "cn=Christa*";

echo "Searching for Common Name: ".$query;

// Search surname entry
$sr=ldap_search($ds,"c=US", $query); //line 17

echo "Search result is ".$sr."<p>";

if ($sr > 0) {
	echo "Getting entries ...<p>";
	$info = ldap_get_entries($ds, $sr);
    echo "Data for ".$info["count"]." items returned:<p>";

    for ($i=0; $i<$info["count"]; $i++) {
	    echo "dn is: ". $info[$i]["dn"] ."<br>";
    	echo "first cn entry is: ". $info[$i]["cn"][0] ."<br>";
    	echo "first email entry is: ". $info[$i]["mail"][0] ."<p>";
	}
}

echo "Closing connection";
ldap_close($ds);

} else {
echo "<h4>Unable to connect to LDAP server</h4>";
}
?>

Can someone please help???